TY  - JOUR
A1  - Kiel, Frederik
A1  - Trinschek, Sarah
A1  - Kuchmizhak, Aleksandr
A1  - Gurevich, Evgeny
T1  - Colouration of diamond surfaces by laser-induced periodic surface structuring
JF  - Optics & Laser Technology
Y1  - 2024
U6  - http://dx.doi.org/10.1016/j.optlastec.2023.109882
IS  - 168
SP  - 109882
ER  - 
TY  - JOUR
A1  - Homrighausen, Jonas
A1  - Horsthemke, Ludwig
A1  - Pogorzelski, Jens
A1  - Trinschek, Sarah
A1  - Glösekötter, Peter
A1  - Gregor, Markus
T1  - Edge-Machine-Learning-Assisted Robust Magnetometer Based on Randomly Oriented NV-Ensembles in Diamond
JF  - Sensors
N2  - Quantum magnetometry based on optically detected magnetic resonance (ODMR) of nitrogen vacancy centers in nano- or micro-diamonds is a promising technology for precise magnetic-field sensors. Here, we propose a new, low-cost and stand-alone sensor setup that employs machine learning on an embedded device, so-called edge machine learning. We train an artificial neural network with data acquired from a continuous-wave ODMR setup and subsequently use this pre-trained network on the sensor device to deduce the magnitude of the magnetic field from recorded ODMR spectra. In our proposed sensor setup, a low-cost and low-power ESP32 microcontroller development board is employed to control data recording and perform inference of the network. In a proof-of-concept study, we show that the setup is capable of measuring magnetic fields with high precision and has the potential to enable robust and accessible sensor applications with a wide measuring range.
Y1  - 2023
UR  - https://www.mdpi.com/1424-8220/23/3/1119
U6  - http://dx.doi.org/10.3390/s23031119
VL  - 23
IS  - 3
ER  - 
TY  - JOUR
A1  - Herbst, Elmar
A1  - Muhmann, Raphael J.
A1  - Raschke, Michael J.
A1  - Katthagen, J. Christoph
A1  - Oeckenpöhler, Simon
A1  - Wermers, Jens
A1  - Glasbrenner, Johannes
A1  - Robinson, James R.
A1  - Kittl, Christoph
T1  - The Anterior Fibers of the Superficial MCL and the ACL Restrain Anteromedial Rotatory Instability
JF  - The American Journal of Sports Medicine
Y1  - 2023
U6  - http://dx.doi.org/10.1177/03635465231187043
ER  - 
TY  - CHAP
A1  - Hinricher, N.
A1  - Schröer, C.
A1  - Ibenthal, E.
A1  - Müller, L.
A1  - Backhaus, C.
T1  - Einfluss einer 5. Rolle auf die Wirbelsäulenkompressionskräfte beim Schieben und Ziehen von Krankenhausbetten
T2  - Beitrag zum 69. Kongress der Gesellschaft für Arbeitswissenschaft
Y1  - 2023
PB  - GfA-Press
CY  - St. Augustin
ER  - 
TY  - CHAP
A1  - Müller, L.
A1  - Hinricher, N.
A1  - Schröer, C.
A1  - Louw, J.
A1  - Ibenthal, I.
A1  - Backhaus, C.
T1  - Das Krankenhausbett als Hilfsmittel zur Patientenmobilisation
T2  - Beitrag zum 69. Kongress der Gesellschaft für Arbeitswissenschaft
Y1  - 2023
VL  - St. Augustin
PB  - GfA-Press
ER  - 
TY  - CHAP
A1  - Schröer, C.
A1  - Hinricher, N.
A1  - Ibenthal, E.
A1  - Müller, L.
A1  - Backhaus, C.
T1  - Untersuchung des Einflusses einer fünften Rolle und des Rollendurchmessers auf die benötigte Kraft zum Schieben von Krankenhausbetten
T2  - Beitrag zur 63. Wissenschaftlichen Jahrestagung der Deutschen Gesellschaft für Arbeitsmedizin und Umweltmedizin
Y1  - 2023
ER  - 
TY  - CHAP
A1  - Schröer, C.
A1  - Hinricher, N.
A1  - Ibenthal, I.
A1  - Müller, L.
A1  - Backhaus, C.
T1  - Expertenevaluation der ergonomischen und sicherheitstechnischen Gestaltung von Krankenhausbetten
T2  - Beitrag zum 69. Kongress der Gesellschaft für Arbeitswissenschaft
Y1  - 2023
PB  - GfA-Press
CY  - St. Augustin
ER  - 
TY  - CHAP
A1  - Siebers, S.
A1  - Franke, A.
A1  - Backhaus, C.
T1  - Lärm im Krankenhaus – Spitzenschalldruckpegel bei der Bedienung von Krankenhausbetten
T2  - Beitrag zur 63. Wissenschaftlichen Jahrestagung der Deutschen Gesellschaft für Arbeitsmedizin und Umweltmedizin
Y1  - 2023
ER  - 
TY  - CHAP
A1  - Ibenthal, E.
A1  - Hinricher, N.
A1  - Backhaus, C.
T1  - Prävalenz des Karpaltunnelsyndroms bei Pflegekräften in der Dialyse
T2  - Beitrag zur 63. Wissenschaftlichen Jahrestagung der Deutschen Gesellschaft für Arbeitsmedizin und Umweltmedizin
Y1  - 2023
ER  - 
TY  - JOUR
A1  - Carl, Ann-Kathrin
T1  - Umfrage der FH Münster zu zwei Jahren MDR in der Hilfsmittelbranche. Wie steht’s um die Praxistauglichkeit?
JF  - MTD Medizintechnischer Dialog
Y1  - 2023
SN  - 0935-137X
VL  - 49
IS  - 7
SP  - 6
EP  - 8
ER  - 
TY  - JOUR
A1  - Katthagen, J. Christoph
A1  - Wermers, Jens
A1  - Paus, Christoph
A1  - Michel, Philipp A.
A1  - Köhler, Alina
A1  - Schliemann, Benedikt
A1  - Raschke, Michael J.
T1  - The long head of the biceps has a stabilizing effect on the glenohumeral joint in simulated infraspinatus or subscapularis but not supraspinatus rotator cuff deficiency – a biomechanical study
JF  - Arthroscopy: The Journal of Arthroscopic & Related Surgery
Y1  - 2023
U6  - http://dx.doi.org/10.1016/j.arthro.2023.08.018
ER  - 
TY  - JOUR
A1  - Carl, Ann-Kathrin
A1  - Hochmann, David
T1  - Comparison of the regulatory requirements for custom-made medical devices using 3D printing in Europe, the United States, and Australia
JF  - Biomedical Engineering / Biomedizinische Technik
N2  - Additive manufacturing (AM) has continuously grown in recent decades. Enhanced quality, further development of technology, and fall in prices make AM applicable and capable for various industrial applications, also for the manufacture of medical devices. 3D printing offers the possibility for an unprecedented adaptation to the anatomy of each patient, generating medical devices on a case-by-case basis. In many jurisdictions, custom-made devices qualify for an exemption to pre-market approval standards. This regulation is called into question by new technologies, like AM. Therefore, this article compares the current regulatory requirements for custom-made devices in Europe, the United States, and Australia and discusses the impact on 3D printed devices. It concludes that not all jurisdictions have yet adjusted their regulatory framework for custom-made devices to technological advances. Remaining uncertainties must be eliminated in order to help manufacturers comply with the regulatory requirements, emphasizing key aspects of AM.
KW  - additive manufacturing
KW  - AM
KW  - personalized medical devices
KW  - regulation
Y1  - 2022
U6  - http://dx.doi.org/10.1515/bmt-2021-0266
SN  - 1862-278X
VL  - 67
IS  - 6
SP  - 61
EP  - 69
ER  - 
TY  - JOUR
A1  - Deichsel, Adrian
A1  - Raschke, Michael J.
A1  - Herbst, Elmar
A1  - Peez, Christian
A1  - Oeckenpöhler, Simon
A1  - Briese, Thorben
A1  - Wermers, Jens
A1  - Kittl, Christoph
A1  - Glasbrenner, Johannes
T1  - The Biomechanical Stability of Bone Staples in Cortical Fixation of Tendon Grafts for Medial Collateral Ligament Reconstruction Depends on the Implant Design
JF  - The American Journal of Sports Medicine
Y1  - 2022
U6  - http://dx.doi.org/10.1177/03635465221130753
SN  - 1552-3365
VL  - 50
IS  - 14
SP  - 3827
EP  - 3831
ER  - 
TY  - JOUR
A1  - Heilmann, Lukas F.
A1  - Sußiek, Julia
A1  - Raschke, Michael J.
A1  - Langer, Martin F.
A1  - Frank, Andre
A1  - Wermers, Jens
A1  - Michel, Philipp A.
A1  - Dyrna, Felix
A1  - Schliemann, Benedikt
A1  - Katthagen, J. Christoph
T1  - Biomechanical Analysis of Coracoid Stability After Coracoplasty: How Low Can You Go?
JF  - Orthopaedic Journal of Sports Medicine
Y1  - 2022
U6  - http://dx.doi.org/10.1177/23259671221077947
SN  - 2325-9671
VL  - 10
IS  - 2
ER  - 
TY  - CHAP
A1  - Carl, Ann-Kathrin
A1  - Hochmann, David
T1  - Aktueller Stand der regulatorischen Vorgaben für 3D-gedruckte Sonderanfertigungen in Europa
T2  - Beitrag zur OTWorld 2022
Y1  - 2022
UR  - https://www.ot-world.com/files/otworld/congress/102771.pdf
ER  - 
TY  - JOUR
A1  - Behrendt, Peter
A1  - Herbst, Elmar
A1  - Robinson, James R.
A1  - von Negenborn, Leslie
A1  - Raschke, Michael J.
A1  - Wermers, Jens
A1  - Glasbrenner, Johannes
A1  - Fink, Christian
A1  - Herbort, Mirco
A1  - Kittl, Christoph
T1  - The Control of Anteromedial Rotatory Instability Is Improved With Combined Flat sMCL and Anteromedial Reconstruction
JF  - The American Journal of Sports Medicine
Y1  - 2022
U6  - http://dx.doi.org/10.1177/03635465221096464
SN  - 1552-3365
VL  - 50
IS  - 8
SP  - 2093
EP  - 2101
ER  - 
TY  - JOUR
A1  - Bobkova, Valeriia
A1  - Trinschek, Sarah
A1  - Otte, Eileen
A1  - Denz, Cornelia
T1  - Analyzing light-structuring features of droplet lenses on liquid-repelling surfaces
JF  - Optics Express
Y1  - 2022
U6  - http://dx.doi.org/10.1364/OE.444777
VL  - 30
IS  - 4
SP  - 5937
EP  - 5952
ER  - 
TY  - JOUR
A1  - Müller, D.
A1  - Kehmann, M.
A1  - Siebers, S.
A1  - Backhaus, C.
T1  - Rasterelektronenmikroskopische Untersuchung zum Verschleiß des Membranmaterials von Oxygenatoren nach Langzeitanwendung
JF  - Kardiotechnik
Y1  - 2022
UR  - https://dgfkt.de/organisation/publikationen/rasterelektronenmikroskopische-untersuchung-zum-verschleiss-des-membranmaterials-von-oxygenatoren-nach-langzeitanwendung/
U6  - http://dx.doi.org/10.47624/kt.031.EZCZ3563
VL  - 31
IS  - 4
SP  - 141
EP  - 145
ER  - 
TY  - JOUR
A1  - Peez, Christian
A1  - Wermers, Jens
A1  - Glasbrenner, Johannes
A1  - Briese, Thorben
A1  - Raschke, Michael J.
A1  - Herbst, Elmar
A1  - Kittl, Christoph
T1  - Qualitative and Quantitative Assessment of the Medial Patellar Retinaculum Anatomy: the Anteromedial Side of the Knee Revisited
JF  - Orthopaedic Journal of Sports Medicine
Y1  - 2022
U6  - http://dx.doi.org/10.1177/23259671221134818
VL  - 10
IS  - 11
ER  - 
TY  - JOUR
A1  - Otte, Eileen
A1  - Bobkova, Valeria
A1  - Trinschek, Sarah
A1  - Rosales-Guzmán, Carmelo
A1  - Denz, Cornelia
T1  - Single-shot all-digital approach for measuring the orbital angular momentum spectrum of light
JF  - APL Photonics
N2  - Light fields carrying orbital angular momentum (OAM) offer a broad variety of applications in which especially an accurate determination of the respective OAM spectrum, i.e., unraveling the content of OAM by its topological charge ℓ, has become a main subject. Even though various techniques have been proposed to measure the OAM spectrum of such modes, many of them fail if optical vortices have to be considered in perturbed or dynamically changing experimental systems. Here, we put forward a novel technique capable of determining the OAM spectrum of light by a single measurement shot, which specifically applies to those fields that have been distorted. Experimentally, our technique only requires to interfere the perturbed light field with a reference field. From the resulting intensity pattern, the accurate OAM spectrum is determined in an all-digital way. We demonstrate our novel approach by numerical simulations and a proof-of-concept experiment employing a model ball lens as an exemplary disturbing object.
Y1  - 2022
U6  - http://dx.doi.org/10.1063/5.0086536
VL  - 2022
IS  - 7
SP  - 086105
ER  - 
TY  - JOUR
A1  - Katthagen, J. Christoph
A1  - Sußiek, Julia
A1  - Frank, Andre
A1  - Wermers, Jens
A1  - Schliemann, Benedikt
A1  - Raschke, Michael J.
T1  - Double plating is associated with higher fixation strength than single plating in osteoporotic fractures of the scapular spine: a biomechanical study
JF  - Archives of Orthopaedic and Trauma Surgery
Y1  - 2022
U6  - http://dx.doi.org/10.1007/s00402-021-03879-z
SN  - 1434-3916
VL  - 142
IS  - 8
SP  - 1859
EP  - 1864
ER  - 
TY  - JOUR
A1  - Sußiek, Julia
A1  - Wermers, Jens
A1  - Raschke, Michael J.
A1  - Herbst, Elmar
A1  - Dyrna, Felix
A1  - Riesenbeck, Oliver
A1  - Katthagen, J. Christoph
T1  - Acromioclavicular and coracoclavicular ligamentous insertion distances depend on the scapular tilt and decrease with anterior direction of the inferior scapula angle
JF  - Knee Surgery, Sports Traumatology, Arthroscopy
Y1  - 2022
U6  - http://dx.doi.org/10.1007/s00167-022-07126-9
SN  - 1433-7347
ER  - 
TY  - JOUR
A1  - Morawetz, Klaus
A1  - Trinschek, Sarah
A1  - Gurevich, Evgeny
T1  - Interplay of viscosity and surface tension for ripple formation by laser melting
JF  - Physical Review B
Y1  - 2022
U6  - http://dx.doi.org/10.1103/PhysRevB.105.035415
VL  - 105
IS  - 3
SP  - 035415
ER  - 
TY  - JOUR
A1  - Backhaus, C.
A1  - Carl, A.
A1  - Siebers, S.
A1  - Urlichs, F.
T1  - Lärmbelastung einer neonatalen Intensivstation – Gibt es einen Tag-Nacht-Unterschied der Schallexposition?
JF  - Zentralbl. Arbeitsmed.
Y1  - 2022
U6  - http://dx.doi.org/10.1007/s40664-022-00486-6
VL  - 73
SP  - 24
EP  - 31
ER  - 
TY  - CHAP
A1  - Ibenthal, E.
A1  - Backhaus, C.
T1  - Reducing work-related stress in nursing when dealing with people with dementia through music intervention - which factors are relevant?
T2  - Contribution to the 13th International Conference on Applied Human Factors and Ergonomics. Healthcare and Medical Devices
Y1  - 2022
U6  - http://dx.doi.org/10.54941/ahfe1001661
VL  - 38
SP  - 34
EP  - 41
ER  - 
TY  - CHAP
A1  - Hinricher, N.
A1  - Schröer, C.
A1  - Backhaus, C.
T1  - Design of control elements in virtual reality - investigation of factors influencing operating efficiency, user experience and presence
T2  - Contribution to the 13th International Conference on Applied Human Factors and Ergonomics. Human Factors in Virtual Environments and Game Design
Y1  - 2022
U6  - http://dx.doi.org/10.54941/ahfe1002066
VL  - 50
SP  - 100
EP  - 109
ER  - 
TY  - CHAP
A1  - Ibenthal, E.
A1  - Hinricher, N.
A1  - Backhaus, C.
T1  - Feasibility of a tracking system for hospital beds to improve work processes of nurses
T2  - Contribution to the 11th International Working on Safety Net Conference in Algarve/Portugal. ID1080
Y1  - 2022
ER  - 
TY  - CHAP
A1  - Schröer, C.
A1  - Hinricher, N.
A1  - Ibenthal, E.
A1  - Müller, L.
A1  - Backhaus, C.
T1  - Messtechnische Analyse der Belastung des Hand-Arm-Systems durch Druckkräfte beim Aufrüsten von Hämodialysegeräten
T2  - Beitrag zur 62. Wissenschaftlichen Jahrestagung der Deutschen Gesellschaft für Arbeitsmedizin und Umweltmedizin
Y1  - 2022
SN  - 978-3-9823608-3-6
SP  - 978–3–9823608–3–6
ER  - 
TY  - CHAP
A1  - Müller, L.
A1  - Hinricher, N.
A1  - Ibenthal, E.
A1  - Backhaus, C.
T1  - Berücksichtigung messtechnisch erhobener Muskel-Skelett-Belastungen bei Kaufentscheidungen in Gesundheitseinrichtungen
T2  - Beitrag zum 68. Kongress der Gesellschaft für Arbeitswissenschaft
Y1  - 2022
SN  - 978-3-936804-31-7
SP  - B.5.3
PB  - GfA-Press
CY  - St. Augustin
ER  - 
TY  - CHAP
A1  - Müller, L.
A1  - Hinricher, N.
A1  - Gersie, J.
A1  - Backhaus, C.
T1  - Prototype of a Piece of Clothing for Patients for Quick and Easy Patient Mobilizations in Healthcare Facilities
T2  - Contribution to the 13th International Conference on Applied Human Factors and Ergonomics. Healthcare and Medical Devices
Y1  - 2022
U6  - http://dx.doi.org/10.54941/ahfe1002122
VL  - 51
SP  - 230
EP  - 238
ER  - 
TY  - CHAP
A1  - Kleyer, J.
A1  - Hinricher, N.
A1  - Ibenthal, E.
A1  - Müller, L.
A1  - Backhaus, C.
T1  - Messtechnische Analyse der Körperhaltung und -bewegung beim Aufrüsten von Hämodialysegeräten
T2  - Beitrag zur 62. Wissenschaftlichen Jahrestagung der Deutschen Gesellschaft für Arbeitsmedizin und Umweltmedizin
Y1  - 2022
SN  - 978–3–9823608–3–6
ER  - 
TY  - CHAP
A1  - Backhaus, C.
A1  - Siebers, S.
T1  - Work-related noise exposure in a neonatal intensive care unit - stressful work activities and diurnal rhythmic variations
T2  - Contribution to the 13th International Conference on Applied Human Factors and Ergonomics. Healthcare and Medical Devices
Y1  - 2022
U6  - http://dx.doi.org/10.54941/ahfe1002129
VL  - 51
SP  - 286
EP  - 292
ER  - 
TY  - CHAP
A1  - Louw, J.
A1  - Schröer, C.
A1  - Hinricher, N.
A1  - Ibenthal, E.
A1  - Müller, L.
A1  - Backhaus, C.
T1  - Anwenderakzeptanz von Hämodialysegeräten
T2  - Beitrag zum 68. Kongress der Gesellschaft für Arbeitswissenschaft
Y1  - 2022
SN  - 978-3-936804-31-7
SP  - C.9.5
PB  - GfA-Press
CY  - St. Augustin
ER  - 
TY  - CHAP
A1  - Schröer, C.
A1  - Hinricher, N.
A1  - Ibenthal, E.
A1  - Müller, L.
A1  - Backhaus, C.
T1  - Messtechnische Analyse der Belastung des Hand-Arm-Systems durch Drehmomente beim Aufrüsten von Hämodialysegeräten
T2  - Beitrag zum 68. Kongress der Gesellschaft für Arbeitswissenschaft
Y1  - 2022
SN  - 978-3-936804-31-7
SP  - A.4.5
PB  - GfA-Press
CY  - St. Augustin
ER  - 
TY  - CHAP
A1  - Carl, Ann-Kathrin
A1  - Hochmann, David
T1  - In-silico Methoden im Zulassungsprozess. Regulatorische Anforderungen an computergestützte Modellierung und Simulation
T2  - Medizinprodukte planen, entwickeln, realisieren. Der CE-Routenplaner
N2  - Die computergestützte Modellierung und Simulation (CMS) ist in vielen Bereichen der Industrie gängige Praxis und hat das Potenzial, die Medizintechnikbranche zu revolutionieren. Die Markteinführung neuer Produkte kann erheblich beschleunigt und entstehende Kosten können reduziert werden, ohne die Patientensicherheit negativ zu beeinflussen. Dennoch beruhen die Entwicklungs- und Zulassungsprozesse in der Medizintechnik bis dato überwiegend auf experimentell ermittelten Daten, was in Europa unter anderem auf die bestehenden regulatorischen Unsicherheiten zurückzuführen ist. Verglichen mit der FDA hat die EU-Kommission die Möglichkeiten der CMS bisher nicht erkannt – es fehlt an rechtlichen Vorgaben. Der folgende Artikel soll daher eine Übersicht der aktuellen regulatorischen Situation bieten.
Y1  - 2022
SN  - 978-3-7406-0716-6
SP  - 1
EP  - 15
PB  - TÜV Media GmbH TÜV Rheinland Group
CY  - Köln
ER  - 
TY  - JOUR
A1  - Carl, Ann-Kathrin
A1  - Hochmann, David
T1  - Regulatorische Anforderungen an Computergestützte Modellierung und Simulation
JF  - mt-medizintechnik
N2  - Die computergestützte Modellierung und Simulation (CMS) ist in vielen Bereichen der Industrie gängige Praxis und hat das Potenzial die Medizintechnikbranche zu revolutionieren. Die Markteinführung neuer Produkte kann erheblich beschleunigt und entstehende Kosten können reduziert werden, ohne die Patientensicherheit negativ zu beeinflussen. Dennoch beruhen die Entwicklungs- und Zulassungsprozesse in der Medizintechnik bis dato überwiegend auf experimentell ermittelten Daten, was in Europa unter anderem auf die bestehenden regulatorischen Unsicherheiten zurückzuführen ist. Verglichen mit der FDA hat die EU-Kommission die Möglichkeiten der CMS bisher nicht erkannt – es fehlt an rechtlichen Vorgaben. Der folgende Artikel soll daher eine Übersicht der aktuellen regulatorischen Situation bieten.
KW  - computergestützte Modellierung und Simulation
KW  - CMS
KW  - in silico-Verfahren
KW  - Zulassungsprozess
Y1  - 2022
SN  - 0344-9416
VL  - 142
IS  - 4
SP  - 14
EP  - 18
ER  - 
TY  - CHAP
A1  - Carl, Ann-Kathrin
A1  - Hochmann, David
T1  - Regulatory Framework for 3D Printed Custom-Made Devices in Europe
T2  - Beitrag zur 3. Additive Manufacturing Meets Medicine (AMMM) Konferenz
N2  - Additive manufacturing (AM) has been growing continuously over the past 20 years, enabling unprecedented tailoring to the anatomy of each patient. In Europe, custom-made devices qualify for an exemption and pass a simplified approval process. New technologies, like AM, provoke questions about the adequacy of the current regulatory framework for custom-made devices. This article addresses the regulatory requirements for such devices in Europe and discusses the implications for AM. It concludes that the legal framework for custom-made devices entails uncertainties which need to be resolved to guide manufacturers through the regulatory requirements, highlighting the specific areas of focus for AM.
Y1  - 2021
U6  - http://dx.doi.org/10.18416/AMMM.2021.2109542
SN  - 2699-1977
ER  - 
TY  - CHAP
A1  - Wang, Hao
A1  - Gurevich, Evgeny L
A1  - Ostendorf, Andreas
T1  - Application of nanoindentation technique to test surface hardness and residual stress of NiTi alloy after femtosecond laser shock peening
T2  - High-Power Laser Materials Processing: Applications, Diagnostics, and Systems X / SPIE.Digital.Library
N2  - Laser shock peening is a new and important surface treatment technique that can enhance the mechanical properties of metal materials. Normally, the nanosecond laser with pulse-width between 5 ns and 20 ns is used to induce a high-pressure shock wave that can generate plastic deformation in the top layer of metals. The femtosecond laser shock peening in the air has been studied recently, which can induce higher pressure shock wave than that of traditional nanosecond laser shock peening in a very short time. The NiTi alloy is processed by femtosecond laser shock peening, then a nanoindentation device is used to measure its surface hardness and residual stress. The hardness results of NiTi alloy before and after treatment show that the femtosecond laser shock peening can increase the hardness of NiTi alloy, which also shows that the femtosecond laser can be used to perform laser shock peening on NiTi alloy without coating.
Y1  - 2021
UR  - https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11679/116790J/Application-of-nanoindentation-technique-to-test-surface-hardness-and-residual/10.1117/12.2593092.full?tab=ArticleLinkReference
U6  - http://dx.doi.org/10.1117/12.2593092
SP  - 116790J-0
EP  - 116790J-5
PB  - International Society for Optics and Photonics
CY  - USA
ER  - 
TY  - CHAP
A1  - Nguyen, K.
A1  - Martina, S.
A1  - Kernagis, D.
A1  - Bershad, E.
A1  - Clark, J.
A1  - Hinricher, N.
A1  - Backhaus, C.
T1  - Effekt of repetetive, successive oculometric testing an saccades, smooth pursuit, and visual reaction times for future head down bed rest study (HDBR) applikations
T2  - Contribution to the NASA Online-Conference for Advancing Human Space Flight Research Through Innovation and Collaboration
Y1  - 2021
ER  - 
TY  - JOUR
A1  - Pues, Patrick
A1  - Laube, Michael
A1  - Fischer, Stefan
A1  - Schröder, Franziska
A1  - Schwung, Sebastian
A1  - Rytz, Daniel
A1  - Fiehler, Torben
A1  - Wittrock, Ulrich
A1  - Jüstel, Thomas
T1  - Luminescence and up-conversion of single crystalline Lu3Al5O12:Pr3+
JF  - Journal of Luminescence
N2  - This work deals with the spectroscopic properties of praseodymium doped single crystalline lutetium aluminum garnet (LuAG:Pr3+). A special focus was set on temperature- and time-dependent spectroscopy. Beyond the well-known down-conversion luminescence of LuAG:Pr3+, also UV-A/B up-conversion luminescence under excitation with a 488 nm laser was thoroughly investigated. Furthermore, the results of the spectroscopic investigations on the single crystalline material were supplemented and compared with measurements on a microscale powder sample.

In addition, to the spectroscopic investigations, mechanistic considerations are presented to obtain a closer look at the up-conversion process in LuAG:Pr3+. We promote the thesis of a temperature-dependent energy transfer up-conversion mechanism.
KW  - Pr3+ luminescence
KW  - Single crystal
KW  - Photoluminescence
KW  - Up-conversion
KW  - Temperature-dependent spectroscopy
Y1  - 2021
U6  - http://dx.doi.org/10.1016/j.jlumin.2021.117987
VL  - 234
SP  - 117987
EP  - 117995
ER  - 
TY  - CHAP
A1  - Ibenthal, E.
A1  - Kehmann, M.
A1  - Backhaus, C.
T1  - Arbeitswissenschaftliche Analyse zum Verhalten von Menschen mit Demenz in stationären Pflegeeinrichtungen unter Einfluss personalisierter Musik
T2  - Beitrag zum 67. Kongress der Gesellschaft für Arbeitswissenschaft
Y1  - 2021
SN  - 978-3-936804-29-4
SP  - C.3.1
PB  - GfA-Press
CY  - Dortmund
ER  - 
TY  - JOUR
A1  - Dobbelstein, Henrik
A1  - George, Easo P
A1  - Gurevich, Evgeny L
A1  - Kostka, Aleksander
A1  - Ostendorf, Andreas
A1  - Laplanche, Guillaume
T1  - Laser metal deposition of refractory high-entropy alloys for high-throughput synthesis and structure-property characterization
JF  - International Journal of Extreme Manufacturing
N2  - Progress in materials development is often paced by the time required to produce and evaluate a large number of alloys with different chemical compositions. This applies especially to refractory high-entropy alloys (RHEAs), which are difficult to synthesize and process by conventional methods. To evaluate a possible way to accelerate the process, high-throughput laser metal deposition was used in this work to prepare a quinary RHEA, TiZrNbHfTa, as well as its quaternary and ternary subsystems by in-situ alloying of elemental powders. Compositionally graded variants of the quinary RHEA were also analyzed. Our results show that the influence of various parameters such as powder shape and purity, alloy composition, and especially the solidification range, on the processability, microstructure, porosity, and mechanical properties can be investigated rapidly. The strength of these alloys was mainly affected by the oxygen and nitrogen contents of the starting powders, while substitutional solid solution strengthening played a minor role.
Y1  - 2021
UR  - https://iopscience.iop.org/article/10.1088/2631-7990/abcca8/meta
VL  - 3
IS  - 1
SP  - 015201
EP  - 015201
PB  - IOP Publishing
ER  - 
TY  - JOUR
A1  - Wang, Hao
A1  - Nett, Ralf
A1  - Gurevich, Evgeny L
A1  - Ostendorf, Andreas
T1  - The Effect of Laser Nitriding on Surface Characteristics and Wear Resistance of NiTi Alloy with Low Power Fiber Laser
JF  - Applied Sciences
N2  - The laser nitriding was performed in nitrogen gas at room temperature (20 °C) and low temperature (−190 °C) by a low power fiber laser to modify the wear and abrasion resistance of NiTi alloy. The surface roughness and element composition were analyzed by roughness device and energy-dispersive X-ray spectroscopy respectively. The results of roughness show that laser treatment can change the surface roughness due to the laser remelting. The effect of laser nitriding on the microhardness, friction coefficient, and worn scars of NiTi alloy was also studied, which shows that the microhardness of the NiTi alloy increases after laser nitriding. The optical microscope and scanning electron microscope were used to characterize the surface of NiTi alloy after wear testing to observe the microstructure of worn scars. The results show that the laser nitriding with different parameters can induce a nitride layer with different thicknesses and the higher energy deposition is the key factor for the formation of the nitride layer, which can decrease the friction coefficient and reduce wear loss during the application of NiTi alloy. The improvement of wear resistance can be attributed to the hard nitriding layer.
KW  - laser nitriding; wear resistance; NiTi alloy; roughness; microhardness
Y1  - 2021
U6  - http://dx.doi.org/10.3390/app11020515
VL  - 11
IS  - 2
SP  - 515
ER  - 
TY  - JOUR
A1  - Kasischke, Maren
A1  - Hartmann, Simon
A1  - Niermann, Kevin
A1  - Kostyrin, Denis
A1  - Thiele, Uwe
A1  - Gurevich, Evgeny L
T1  - Pattern Formation in Slot-Die Coating
JF  - arXiv.org
N2  - We experimentally study the occurrence of pattern formation during the slot-die coating of low-viscosity nearly Newtonian liquids onto Polyethylenterephthalat (PET)-substrates. In particular, it is demonstrated that with increase of the coating speed a homogeneous coating becomes unstable with respect to periodic stripe patterns. Thereby, depending on the liquid viscosity, the stripes can be oriented parallel or perpendicular with respect to the coating direction. Mixed states do also occur. The spatial period of perpendicular [parallel] stripes increases [decrease] with the coating speed. The dependence of the effect on various control parameters of slot-die coating is investigated. Finally, a simple theoretical model based on the hydrodynamics of thin films of partially wetting liquids is analysed. Comparing the results to the experiments, conclusions are drawn regarding the acting instability and pattern formation mechanisms.
Y1  - 2021
UR  - https://arxiv.org/abs/2101.01614
VL  - 2021
SP  - 1
EP  - 24
ER  - 
TY  - JOUR
A1  - Morawetz, KLaus
T1  - Consistent solution of Einstein–Cartan equations with torsion outside matter
Y1  - 2021
U6  - http://dx.doi.org/10.1088/1361-6382/ac2417
ER  - 
TY  - JOUR
A1  - Katthagen, J. Christoph
A1  - Michel, Philipp
A1  - Raschke, Michael J.
A1  - Sußiek, Julia
A1  - Frank, Andre
A1  - Wermers, Jens
A1  - Dyrna, Felix
A1  - Schliemann, Benedikt
T1  - The forgotten fragment: additional lesser tuberosity fixation of 4-part proximal humeral fractures-a biomechanical investigation
JF  - Journal of Shoulder and Elbow Surgery
Y1  - 2021
U6  - http://dx.doi.org/10.1016/j.jse.2021.04.041
SN  - 1532-6500
VL  - 30
IS  - 12
SP  - 2852
EP  - 2861
ER  - 
TY  - JOUR
A1  - Wermers, Jens
A1  - Schliemann, Benedikt
A1  - Raschke, Michael J.
A1  - Michel, Philipp A.
A1  - Heilmann, Lukas F.
A1  - Dyrna, Felix
A1  - Sußiek, Julia
A1  - Frank, Andre
A1  - Katthagen, J. Christoph
T1  - Glenoid concavity has a higher impact on shoulder stability than the size of a bony defect
JF  - Knee Surgery, Sports Traumatology, Arthroscopy
Y1  - 2021
U6  - http://dx.doi.org/10.1007/s00167-021-06562-3
ER  - 
TY  - JOUR
A1  - Wermers, Jens
A1  - Schliemann, Benedikt
A1  - Raschke, Michael J.
A1  - Dyrna, Felix
A1  - Heilmann, Lukas F.
A1  - Michel, Philipp A.
A1  - Katthagen, J. Christoph
T1  - The Glenolabral Articular Disruption Lesion Is a Biomechanical Risk Factor for Recurrent Shoulder Instability
JF  - Arthroscopy, Sports Medicine, and Rehabilitation
Y1  - 2021
U6  - http://dx.doi.org/10.1016/j.asmr.2021.08.007
SN  - 2666-061X
VL  - 3
IS  - 6
SP  - e1803
EP  - e1810
ER  - 
TY  - JOUR
A1  - Wermers, Jens
A1  - Raschke, Michael J.
A1  - Wilken, Marcel
A1  - Riegel, Arne
A1  - Katthagen, J. Christoph
T1  - The Anatomy of Glenoid Concavity-Bony and Osteochondral Assessment of a Stability-Related Parameter
JF  - Journal of Clinical Medicine
Y1  - 2021
U6  - http://dx.doi.org/10.3390/jcm10194316
SN  - 2077-0383
VL  - 10
IS  - 19
SP  - 4316
ER  - 
TY  - JOUR
A1  - Sandten, Christian Stefan
A1  - Böing, Christian
A1  - Hrincius, Eike
A1  - Anhlan, Darisuren
A1  - Kreyenschmidt, Martin
A1  - Ludwig, Stephan
A1  - Mertins, Hans-Christoph
A1  - Mellmann, Alexander
A1  - Dworog, Andreas
A1  - Hanning, Stephanie
A1  - Kuennemann, Thilo
A1  - Niehues, Christopher
A1  - Schupp, Thomas
A1  - Stec, Edyta
A1  - Thume, Julius
A1  - Triphaus, Daniel
A1  - Wilkern, Markus
A1  - Uphoff, Holger
A1  - Zündorf, Josef
A1  - Jacobshagen, Anja
T1  - Decontamination of disposable respirators for reuse in a pandemic employing in-situ-generated peracetic acid
JF  - American Journal of Infection Control
KW  - Sars-CoV-2
Y1  - 2021
UR  - https://www.ajicjournal.org/action/showPdf?pii=S0196-6553%2821%2900620-9
U6  - http://dx.doi.org/10.1016/j.ajic.2021.09.017
VL  - 00 / 2021
SP  - 1
EP  - 7
ER  - 
TY  - JOUR
A1  - Hinricher, N.
A1  - Pawelzik, L.
A1  - Backhaus, C.
T1  - Investigation of Impulse Oscillometry for the Detection of Extravasations using Design of Experiments and an Infusion Simulator
JF  - Medical Engineering and Physics
Y1  - 2021
U6  - http://dx.doi.org/10.1016/j.medengphy.2021.04.002
SN  - 1350-4533
VL  - 92
IS  - 19
SP  - 33
EP  - 39
ER  - 
TY  - CHAP
A1  - König, S.
A1  - Klebsch, L.
A1  - Ostermann, R.
A1  - Hinricher, N.
A1  - Kaluza, M.
A1  - Walter, S.
A1  - Heemels, H.
A1  - Backhaus, C.
T1  - Anwendbarkeit von Augmented Reality Systemen für eine unterstützte Fehlerbehebung an ECMO/ECLS-Systemen auf Intensivstationen
T2  - Beitrag zur 50. Internationalen Jahrestagung der Deutschen Gesellschaft für Kardiotechnik
Y1  - 2021
ER  - 
TY  - JOUR
A1  - Ibenthal, E.
A1  - Kehmann, M.
A1  - Backhaus, C.
T1  - Effectiveness of personalized music systems to influence neuropsychiatric symptoms associated with dementia: a quasi-experimental study
JF  - EXPLORE: The Journal of Science & Healing
Y1  - 2021
U6  - http://dx.doi.org/10.1016/j.explore.2021.03.004
VL  - 18
SP  - 319
EP  - 326
ER  - 
TY  - JOUR
A1  - Ibenthal, E.
A1  - Backhaus, C.
T1  - Arbeit in der stationären Demenzpflege – Unterschiede zwischen einer Pflegefachkraft, Pflegeassistenz und Betreuungskraft
JF  - Zentralbl. Arbeitsmed
Y1  - 2021
U6  - http://dx.doi.org/10.1007/s40664-021-00442-w
VL  - 71
SP  - 270
EP  - 280
ER  - 
TY  - JOUR
A1  - König, S.
A1  - Hinricher, N.
A1  - Backhaus, C.
T1  - VR-bility in der Medizintechnik - Medizinprodukte mittels Virtual Reality gebrauchstauglich gestalten
JF  - Arbeitsmed. Sozialmed. Umweltmed
Y1  - 2021
SN  - 0944-6052
VL  - 46
SP  - 603
EP  - 605
ER  - 
TY  - JOUR
A1  - Backhaus, C.
T1  - Das Ende der Übergangsfrist der MDR – Gewinn oder Risiko für die Patientensicherheit?
JF  - mt-Medizintechnik
Y1  - 2021
SN  - 0344-9416
VL  - 141
IS  - 4
SP  - 2
EP  - 3
ER  - 
TY  - CHAP
A1  - Backhaus, C.
A1  - Haimerl, G.
T1  - Engineers in Clinical Perfusion
T2  - Contribution to the 59th International Conference of the American Society for Extracorpreal Technology. AmSECT International Online Conference
Y1  - 2021
ER  - 
TY  - CHAP
A1  - Hinricher, N.
A1  - König, S.
A1  - Backhaus, C.
T1  - Usability-Evaluation von Steuerständen mittels Wizard-of-Oz Methode und Klickdummies am Beispiel eines Prototyps zur Steuerung einer Onshore-Bohranlage
T2  - Beitrag zum 67. Kongress der Gesellschaft für Arbeitswissenschaft
Y1  - 2021
SN  - 978-3-936804-29-4
SP  - C.3.2
PB  - Dortmund
CY  - GfA-Press
ER  - 
TY  - CHAP
A1  - König, S.
A1  - Hinricher, N.
A1  - Backhaus, C.
T1  - Physisches Modell oder virtueller Prototyp? Ein vergleichender Usability-Test am Beispiel eines Blutdruckmessgerätes
T2  - Beitrag zum 67. Kongress der Gesellschaft für Arbeitswissenschaft
Y1  - 2021
SN  - 978-3-936804-29-4
SP  - A.7.3
PB  - GfA-Press
CY  - Dortmund
ER  - 
TY  - JOUR
A1  - Pawelzik, L.
A1  - Backhaus, C.
T1  - Evaluation of Impuls-Oscillometric Extravasatio Prevention
JF  - Medical Engineering and Physics
Y1  - 2021
U6  - http://dx.doi.org/10.1016/j.medengphy.2020.12.004
SN  - 1350-4533
VL  - 88
SP  - 54
EP  - 58
ER  - 
TY  - JOUR
A1  - Carl, Ann-Kathrin
A1  - Hochmann, David
T1  - MDR – Wie gut vorbereitet ist die Hilfsmittelbranche?
JF  - mt-medizintechnik
N2  - Im Mittelpunkt der Medizintechnikbranche stand in den letzten Jahren fast ausschließlich ein Thema: die Medical Device Regulation, kurz MDR. Mit Inkrafttreten der MDR steigen die regulatorischen Anforderungen für alle Akteure der Medizintechnikbranche in ganz Europa. Vor allem kleine und mittelständische Unternehmen werden durch die Implementierung der MDR vor Herausforderungen gestellt. Das Ziel der durchgeführten Online-Befragung war es, ein umfassendes Erfahrungs- und Meinungsbild hinsichtlich der Akzeptanz und Umsetzbarkeit der MDR zu gewinnen. Hierfür wurden Händler und Hersteller orthopädischer Hilfsmittel im Januar und Februar 2021 deutschlandweit anonymisiert befragt. In diesem Artikel werden die Ergebnisse der Umfrage ausführlich dargestellt und diskutiert.
KW  - Medical Device Regulation
KW  - MDR
KW  - Medizinprodukte
KW  - Hilfsmittelbranche
KW  - Regulatorik
Y1  - 2021
SN  - 0344-9416
VL  - 141
IS  - 2
SP  - 34
EP  - 39
ER  - 
TY  - JOUR
A1  - Carl, Ann-Kathrin
T1  - Ergebnisse einer Umfrage der FH Münster. MDR und die Hilfsmittelbranche
JF  - MTD Medizintechnischer Dialog
Y1  - 2021
SN  - 0935-137X
VL  - 47
IS  - 10
SP  - 16
EP  - 18
ER  - 
TY  - JOUR
A1  - Wang, Hao
A1  - Gurevich, Evgeny L
A1  - Ostendorf, Andreas
T1  - Femtosecond laser shock peening on the surface of NiTi shape memory alloy
JF  - Procedia CIRP
N2  - Laser shock peening with a femtosecond laser system was presented in this research work. The NiTi shape memory alloy was processed by the femtosecond laser shock peening (FsLSP) treatment without a protective layer in the air. Femtosecond laser shock peening is a new surface technology, which can induce an intense shock wave with low single laser pulse energy under atmospheric conditions. The surface topography, roughness, microhardness, and wear resistance were measured on the surface of NiTi alloy before and after femtosecond laser peening treatment. The results showed that the surface roughness and microhardness could be increased after femtosecond laser shock peening, which may be due to the laser ablation and micro-plastic deformation induced by the shock wave. The wear property of NiTi alloy was improved, which may be attributed to the FsLSPed surface texturing and …
KW  - laser shock peeningfemtosecond laserNiTi alloymicrohardness
Y1  - 2020
U6  - http://dx.doi.org/10.1016/j.procir.2020.09.071
VL  - 94/2020
SP  - 910
EP  - 913
ER  - 
TY  - CHAP
A1  - Ibenthal, E.
A1  - Kehmann, M.
A1  - Backhaus, C.
T1  - Können Musikassistenzsysteme psychische Fehlbeanspruchungen in der Demenzpflege verringern? Beitrag zum 66. Kongress der Gesellschaft für Arbeitswissenschaft
T2  - Beitrag zum 66. Kongress der Gesellschaft für Arbeitswissenschaft
Y1  - 2020
SN  - 978-3-936804-27-0
PB  - GfA-Press
CY  - Dortmund
ER  - 
TY  - JOUR
A1  - Morawetz, Klaus
A1  - Ashokan, Vinod
A1  - Bala, Renu
A1  - Pathak, Kare
T1  - Exact ground-state properties of the one-dimensional electron gas at high density
JF  - Physical Review B 101
Y1  - 2020
U6  - http://dx.doi.org/10.1103/PhysRevB.101.075130
SP  - 075130-1
EP  - 075130-9
ER  - 
TY  - JOUR
A1  - Kazasidis, Orestis
A1  - Verpoort, Sven
A1  - Wittrock, Ulrich
T1  - Sensor for dynamic focus control of a deformable mirror
JF  - Appl. Opt.
N2  - We recently presented a novel unimorph deformable mirror which allows for dynamic focus shift with an actuation rate of 2 kHz. Such mirrors suffer from hysteresis and creep. Therefore, they have to be operated in closed-loop. For this purpose, we developed a defocus sensor based on an astigmatic detection system. In this paper, we present the sensor design and discuss its performance.
KW  - deformable mirrors
KW  - diode lasers
KW  - laser beams
KW  - laser machining
KW  - sensor performance
Y1  - 2020
UR  - https://www.osapublishing.org/ao/abstract.cfm?uri=ao-59-18-5625
U6  - http://dx.doi.org/10.1364/AO.392970
IS  - 59
SP  - 5625
EP  - 5630
ER  - 
TY  - JOUR
A1  - Syubaev, Sergey
A1  - Gurbatov, Stanislav
A1  - Modin, Evgeny
A1  - Linklater, Denver P
A1  - Juodkazis, Saulius
A1  - Gurevich, Evgeny L
A1  - Kuchmizhak, Aleksandr
T1  - Laser Printing of Plasmonic Nanosponges
JF  - Nanomaterials
N2  - Three-dimensional porous nanostructures made of noble metals represent novel class of nanomaterials promising for nonlinear nanooptics and sensors. Such nanostructures are typically fabricated using either reproducible yet time-consuming and costly multi-step lithography protocols or less reproducible chemical synthesis that involve liquid processing with toxic compounds. Here, we combined scalable nanosecond-laser ablation with advanced engineering of the chemical composition of thin substrate-supported Au films to produce nanobumps containing multiple nanopores inside. Most of the nanopores hidden beneath the nanobump surface can be further uncapped using gentle etching of the nanobumps by an Ar-ion beam to form functional 3D plasmonic nanosponges. The nanopores 10–150 nm in diameter were found to appear via laser-induced explosive evaporation/boiling and coalescence of the randomly arranged nucleation sites formed by nitrogen-rich areas of the Au films. Density of the nanopores can be controlled by the amount of the nitrogen in the Au films regulated in the process of their magnetron sputtering assisted with nitrogen-containing discharge gas.
Y1  - 2020
UR  - https://doi.org/10.3390/nano10122427
VL  - 10
IS  - 12
SP  - 2427
EP  - 2427
PB  - Multidisciplinary Digital Publishing Institute
ER  - 
TY  - JOUR
A1  - Elango, Kishore
A1  - Hoppius, Jan S
A1  - Kukreja, Lalit M
A1  - Ostendorf, Andreas
A1  - Gurevich, Evgeny L
T1  - Studies on ultra-short pulsed laser shock peening of stainless-steel in different confinement media
JF  - Surface and Coatings Technology
N2  - We investigate the role of liquid confinement media on ultra-short pulsed Laser Shock Peening (LSP). The LSP of stainless-steel 316 and 316 L was studied using Ti: Sapphire laser pulses of about 2 ps duration, maximum energy of about 1 mJ and pulse repetition rate of 5 kHz in different liquid confinement media of Ethanol, Deionized water and separate aqueous solutions of NaCl and Glycerol. It is found that the laser fluence and/or energy attenuating mechanisms like self-focusing, filamentation, plasma breakdown in the confinement media are less significant with ps laser pulses than those with sub-ps or fs pulse durations. It is shown that the resulting surface hardness of the peened steel as a function of laser fluence depends significantly on the confinement media and the relative increase in the hardness increases monotonically with the acoustic impedance of the liquid of the confinement medium used during …
Y1  - 2020
U6  - http://dx.doi.org/10.1016/j.surfcoat.2020.125988
VL  - 397
SP  - 125988
EP  - 125988
ER  - 
TY  - JOUR
A1  - Zyla, Gordon
A1  - Kovalev, Alexander
A1  - Gurevich, Evgeny L
A1  - Esen, Cemal
A1  - Liu, Ying
A1  - Lu, Yongfeng
A1  - Gorb, Stanislav
A1  - Ostendorf, Andreas
T1  - Structural colors with angle-insensitive optical properties generated by Morpho-inspired 2PP structures
JF  - Applied Physics A
N2  - This paper describes how two-photon polymerization was used to generate biomimetic nanostructures with angle-insensitive coloration inspired by the blue butterflies of Morpho. Less angle dependence was achieved by engineering the structures with a certain degree of disorder, which delimited them from classical photonic crystals. Variations in the processing parameters enabled the color hue to be controlled. In this context, blue, green, yellow, and brown structures were demonstrated. Reflection spectra of the structures were simulated and studied experimentally in a broad range of incident angles. Additionally, a molding technique was performed as a potential scale-up strategy. The application of such biomimetic structures is discussed.
Y1  - 2020
U6  - http://dx.doi.org/10.1007/s00339-020-03931-6
VL  - 126
IS  - 9
SP  - 740
EP  - 740
ER  - 
TY  - JOUR
A1  - Gurevich, Evgeny L
A1  - Levy, Yoann
A1  - Bulgakova, Nadezhda M
T1  - Three-Step Description of Single-Pulse Formation of Laser-Induced Periodic Surface Structures on Metals
JF  - Nanomaterials
N2  - Two different scenarios are usually invoked in the formation of femtosecond Laser-Induced Periodic Surface Structures (LIPSS), either “self-organization” mechanisms or a purely “plasmonic” approach. In this paper, a three-step model of formation of single-laser-shot LIPSS is summarized. It is based on the periodic perturbation of the electronic temperature followed by an amplification, for given spatial periods, of the modulation in the lattice temperature and a final possible relocation by hydrodynamic instabilities. An analytical theory of the evolution of the temperature inhomogeneities is reported and supported by numerical calculations on the examples of three different metals: Al, Au, and Mo. The criteria of the possibility of hydrodynamic instabilities are also discussed.
Y1  - 2020
U6  - http://dx.doi.org/10.3390/nano10091836
VL  - 10
IS  - 9
SP  - 1836
EP  - 1836
ER  - 
TY  - JOUR
A1  - Wang, Hao
A1  - Keller, Sören
A1  - Bai, Yongtao
A1  - Kashaev, Nikolai
A1  - Gurevich, Evgeny L
A1  - Ostendorf, Andreas
T1  - Laser shock peening on high-strength steel
JF  - SPIE.Digital Library
N2  - High strength steel has been used in the aviation industry and automotive body structural applications to reduce its mass through a reduction in thickness. Therefore, it is very important to enhance its mechanical property, such as microhardness. In the present research, the high strength steel samples were treated by laser shock peening (LSP) with different laser pulse energy and laser pulse width. The microhardness and residual stress were measured to compare the difference between laser energy of 3 J with 10 ns and 5 J with 20 ns. The results in the study show that the surface LSP treatment can increase the microhardness and the compressive residual stress can be found when the samples were tested by hole drilling testing.
Y1  - 2020
U6  - http://dx.doi.org/10.1117/12.2574988
VL  - Volume 11546
IS  - Proceedings Volume 11546
SP  - 115460L
EP  - 115460L
ER  - 
TY  - JOUR
A1  - Surkamp, N
A1  - Zyla, G
A1  - Gurevich, Evgeny L
A1  - Klehr, A
A1  - Knigge, A
A1  - Ostendorf, Andreas
A1  - Hofmann, MR
T1  - Mode-locked diode laser-based two-photon polymerisation
JF  - Electronics Letters
N2  - In this Letter, the authors present the construction of three-dimensional microstructures by two-photon polymerisation induced by ultrashort pulses of a mode-locked diode laser. The ultrafast light source is based on a diode laser with segmented metallisation to realise a waveguide integrated saturable absorber. It is subsequently amplified and compressed resulting in ultrashort laser pulses of 440 fs length and average output power of 160 mW at a fundamental repetition rate of 383.1 MHz. These pulses are coupled into a customised two-photon polymerisation setup. A series of suspended lines were fabricated between support cuboids for testing the process behaviour. A 3D structure with complex features was polymerised to demonstrate the high potential for mode-locked diode lasers in the field of direct laser writing.
KW  - laser mode locking; polymerisation; optical waveguides; high-speed optical techniques; two-photon processes; optical pulse compression; optical saturable absorption; integrated optics; semiconductor lasers
Y1  - 2020
U6  - http://dx.doi.org/10.1049/el.2019.2385
SN  - 0013-5194
VL  - 56/2020
IS  - 2
SP  - 91
EP  - 93
ER  - 
TY  - JOUR
A1  - Pavlov, DV
A1  - Gurbatov, SO
A1  - Kudryashov, SI
A1  - Gurevich, EL
A1  - Kuchmizhak, AA
T1  - Laser-induced surface relief nanocrowns as a manifestation of nanoscale Rayleigh-Plateau hydrodynamic instability
JF  - Applied Surface Science
N2  - Nanoscale hydrodynamic instability of ring-like molten rims around ablative microholes produced in nanometer-thick silver and gold films by tightly focused nanosecond (ns) laser pulses was experimentally explored in terms of laser pulse energy and film thickness. These parametric dependencies of basic instability characteristics - order and period of the resulting nanocrowns - were analyzed, revealing its apparently Rayleigh-Plateau character, as compared to much less consistent possible van der Waals and impact origins. Along with fundamental importance, these findings will put forward ns pulsed laser ablation as an alternative facile inexpensive table-top approach to study such hydrodynamic instabilities developing at ns temporal and nanometer spatial scales as well as to produce unique plasmon-active hierarchical surface morphologies applicable for chemo- and biosensing.
Y1  - 2020
U6  - http://dx.doi.org/10.1016/j.apsusc.2020.145463
VL  - 511/2020
SP  - 145463
EP  - 145463
ER  - 
TY  - CHAP
A1  - Surkamp, N
A1  - Zyla, G
A1  - Gurevich, EL
A1  - Esen, C
A1  - Klehr, A
A1  - Knigge, A
A1  - Ostendorf, A
A1  - Hofmann, MR
T1  - Mode-locked diode lasers as sources for two-photon polymerization
T2  - 3D Printed Optics and Additive Photonic Manufacturing II
N2  - In this study, we use a hybrid mode-locked external cavity diode laser with subsequent amplification and pulse compression. The system provides laser pulses of 440 fs width (assuming a sech² pulse shape) and 160 mW average output power at a repetition rate of 383.1 MHz. The laser oscillator consists of a double quantum well laser diode with a gain segment of 1080 μm length and an absorber element of 80 μm lengths. The chip’s back facet is covered with a high reflective coating, the front facet with an anti-reflective coating. The resonator itself is operated in a collimated geometry and folded by two dielectric mirrors. The used output coupler provides a transmission of 20 percent, which is coupled into a tapered amplifier. Two Faraday isolators are used to decouple the laser and the amplifier from any back reflections. Subsequently, the pulses are compressed using a single pass Martinez type pulse compressor …
Y1  - 2020
U6  - http://dx.doi.org/10.1117/12.2555890
SP  - 113490G
EP  - 113490G
PB  - International Society for Optics and Photonics
CY  - USA
ER  - 
TY  - CHAP
A1  - Wang, Hao
A1  - Gurevich, Evgeny L
A1  - Ostendorf, Andreas
T1  - Microhardness and microabrasion behaviour of NiTi shape memory alloy after femtosecond laser shock peening without coating in air
T2  - High-Power Laser Materials Processing: Applications, Diagnostics, and Systems IX
N2  - The experiment study presents the influence of femtosecond laser shock peening (FsLSP) without a protective layer in the air on the surface hardness and surface mechanical property of NiTi shape memory alloy. Femtosecond laser shock peening is a new possibility of direct laser ablation without any protective layer under atmospheric conditions, which can produce intense shock waves with low pulse energy in the air. The average surface roughness values of the NiTi alloy samples were measured, because the surface roughness may affect its friction resistance. The results showed that the surface roughness of NiTi increased after femtosecond laser shock peening treatment. In comparison with the initial state, the coefficient of friction decreased and surface microhardness increased after femtosecond laser shock peening treatment with different FsLSP parameters. This improvement of wear properties may be attributed to the enhancement of surface microhardness and surface titanium oxide layer induced by the shock wave and laser ablation during FsLSP treatment.
Y1  - 2020
U6  - http://dx.doi.org/10.1117/12.2543550
SP  - 1127301
EP  - 1127301
PB  - International Society for Optics and Photonics
CY  - USA
ER  - 
TY  - JOUR
A1  - Wang, Hao
A1  - Jürgensen, Jens
A1  - Decker, Peer
A1  - Hu, Zhiyong
A1  - Yan, Kai
A1  - Gurevich, Evgeny L
A1  - Ostendorf, Andreas
T1  - Corrosion behavior of NiTi alloy subjected to femtosecond laser shock peening without protective coating in air environment
JF  - Applied Surface Science
N2  - Laser shock peening with femtosecond laser was used to improve the corrosion resistance of biomedical NiTi alloy without protective coating in the air environment. The energy dispersive X-ray analysis (EDX) and X-ray diffraction (XRD) based analysis showed that the laser ablation could produce titanium oxide layer and femtosecond laser shock peening (FsLSP) can generate residual stress in the surface layer of NiTi alloy. The FsLSP improved the corrosion resistance of NiTi in 3.5% NaCl solution and Hank’s solution and also prevented the formation of corrosion cracks and pits during corrosion testing. The reasons for the improvement of corrosion behavior may be the generation of residual stress and titanium oxide film during the laser surface treatment.
KW  - Laser shock peeningFemtosecond laserNiTi alloyCorrosion behaviorLaser surface treatment
Y1  - 2020
U6  - http://dx.doi.org/10.1016/j.apsusc.2019.144338
VL  - 501/2020
SP  - 144338
EP  - 144338
ER  - 
TY  - JOUR
A1  - Maragkaki, Stella
A1  - Skaradzinski, Christian A
A1  - Nett, Ralf
A1  - Gurevich, Evgeny L
T1  - Influence of defects on structural colours generated by laser-induced ripples
JF  - Scientific Reports
N2  - The colourisation of metallic surface which appears due to periodic surface patterns induced by ultrashort laser pulses is studied. Ripples due to the sub-micrometer size of their period act as a diffraction grating, generating structural colours. Carefully chosen strategy of the laser spot scanning allows us to mimic the nanostructures responsible for structural colours of some flowers on the metal substrate. We investigate the correlation between the colourising effects and the artificially-induced defects in the ripples structure and show that these defects can make the colours observable in a larger range of viewing angles. Further we address the influence of the processing parameters on the spectral profile of the reflected light.
Y1  - 2020
U6  - http://dx.doi.org/10.1038/s41598-019-56638-x
VL  - 10
IS  - 1
SP  - 53
EP  - 53
ER  - 
TY  - JOUR
A1  - Syubaev, S.
A1  - Mitsai, E.
A1  - Porfirev, A.
A1  - Khonina, S.
A1  - Kudryashov, S.
A1  - Katkus, T.
A1  - Juodkazis, S.
A1  - Gurevich, E. L.
A1  - Kuchmizhak, A.
T1  - Silicon microprotrusions with tailored chirality enabled by direct femtosecond laser ablation
JF  - Optics Letters
N2  - Here, we report on formation of nanoprotrusions on the surface of a bulk crystalline silicon wafer under femtosecond-laser ablation with a donut-shaped laser beam. By breaking circular symmetry of the irradiating donut-shaped fs-pulse beam, a switch in geometry of the formed surface nanoprotrusions from regular to chiral was demonstrated. The chirality of the obtained Si nanostructures was promoted with an asymmetry degree of the laser beam. An uneven helical flow of laser-melted Si caused by asymmetry of the initial intensity and temperature pattern on the laser-irradiated Si surface explains this phenomenon. Chirality of the formed protrusions was confirmed by visualizing cross-sectional cuts produced by focused ion beam milling as well as Raman activity of these structures probed by circularly polarized light with opposite handedness. Our results open a pathway towards easy-to-implement inexpensive …
Y1  - 2020
U6  - http://dx.doi.org/10.1364/OL.393979
VL  - 45
IS  - 11
SP  - 3050
EP  - 3053
ER  - 
TY  - JOUR
A1  - Wang, Hao
A1  - Kalchev, Yordan
A1  - Wang, Hongcai
A1  - Yan, Kai
A1  - Gurevich, Evgeny L
A1  - Ostendorf, Andreas
T1  - Surface modification of NiTi alloy by ultrashort pulsed laser shock peening
JF  - Surface and Coatings Technology
N2  - This research paper presents the attempt at ultrashort pulsed laser shock peening with absence of absorptive layer and confining medium which could enhance surface microhardness and the abrasion property of NiTi shape memory alloy. The average roughness values of NiTi specimen were measured on the surface, because the roughness would affect the friction resistance. The microhardness and Young's modulus were investigated at different position of single laser spot by nanoindentation technique. The pin-on-plate sliding abrasion testing were performed with different load-force (0.5 N and 2 N) for different testing time. Results showed that ultrashort pulsed laser shock peening treatment would cause a significant improvement on friction coefficient and abrasion property, which was attributed to the change of surface modification, such as roughness, microhardness, microstructure and titanium oxide layer …
Y1  - 2020
U6  - http://dx.doi.org/10.1016/j.surfcoat.2020.125899
VL  - 394
SP  - 125899
EP  - 125899
ER  - 
TY  - JOUR
A1  - Zyla, Gordon
A1  - Surkamp, Nils
A1  - Gurevich, Evgeny L
A1  - Esen, Cemal
A1  - Klehr, Andreas
A1  - Knigge, Andrea
A1  - Hofmann, Matin R
A1  - Ostendorf, Andreas
T1  - Two-photon polymerization with diode lasers emitting ultrashort pulses with high repetition rate
JF  - Optics Letters
N2  - In this Letter, we investigate the resolution of two-photon polymerization (2PP) with an amplified mode-locked external cavity diode laser with adjustable pulse length and a high repetition rate. The experimental results are analyzed with a newly developed 2PP model. Even with low pulse peak intensity, the produced structural dimensions are comparable to those generated by traditional 2PP laser sources. Thus, we show that a compact monolithic picosecond laser diode without amplification and with a repetition rate in the GHz regime can also be applied for 2PP. These results show the high application potential of compact mode-locked diode lasers for low-cost and compact 2PP systems.
Y1  - 2020
U6  - http://dx.doi.org/10.1364/OL.401738
VL  - 45
IS  - 17
SP  - 4827
EP  - 4830
ER  - 
TY  - JOUR
A1  - Verpoort, Sven
A1  - Bittner, Matthias
A1  - Wittrock, Ulrich
T1  - Fast focus-shifter based on a unimorph deformable mirror
JF  - Applied Optics
N2  - On-the-fly remote laser processing plays an increasingly important role in modern fabrication techniques. These processes require guiding of the focus of a laser beam along the contours of the workpiece in three dimensions.
State-of-the-art galvanometer scanners already provide highly dynamic and precise transverse x−y beam steering. However, longitudinal focus shifting (“z-shifting”) relying on conventional optics is restricted to a bandwidth of a few hundred Hz. We have developed and manufactured a fast piezo-based z-shifting mirror with diffraction-limited surface fidelity providing a focus shift of 1z> 60 mm with an actuation rate of 2 kHz.
KW  - beam steering
KW  - deformable mirrors
KW  - optical components
KW  - laser machining
KW  - laser materials processing
Y1  - 2020
UR  - https://www.osapublishing.org/ao/abstract.cfm?uri=ao-59-23-6959
U6  - http://dx.doi.org/10.1364/AO.397495
SN  - 1559-128X
VL  - 59
IS  - 23
SP  - 6959
EP  - 6965
ER  - 
TY  - JOUR
A1  - Trinschek, Sarah
A1  - Stegemerten, Fenna
A1  - John, Karin
A1  - Thiele, Uwe
T1  - Thin-film modeling of resting and moving active droplets
JF  - Physical Review E
Y1  - 2020
U6  - http://dx.doi.org/10.1103/PhysRevE.101.062802
VL  - 101
IS  - 6
SP  - 062802
ER  - 
TY  - BOOK
A1  - Backhaus, C.
A1  - Benad, N.
A1  - Lau, H.-J.
A1  - Pleiss, T.
T1  - MDR & Co. Eine Vorschriftensammlung zum europäischen Medizinprodukterecht
Y1  - 2020
SN  - 978-3-7406-0529-2
PB  - TÜV Media
CY  - Köln
ER  - 
TY  - JOUR
A1  - Müller, L.
A1  - Backhaus, C.
T1  - Fehlkäufe verhindern - strukturierte Einbindung der Anwender in Kaufentscheidungen
JF  - mt-Medizintechnik
Y1  - 2020
SN  - 0344-9416
VL  - 140
SP  - 20
EP  - 24
ER  - 
TY  - JOUR
A1  - Ibenthal, E.
A1  - Sobkowicz, S.
A1  - Backhaus, C.
T1  - Vorkommnisse bei Therapieliegen
JF  - mt-Medizintechnik
Y1  - 2020
SN  - 0344-9416
VL  - 140
SP  - 20
EP  - 27
ER  - 
TY  - JOUR
A1  - Backhaus, C.
A1  - Homann, H.
A1  - Jäger, M.
T1  - Unterstützung mobilitätseingeschränkter Personen in Verkehrsflugzeugen – Evaluation eines Hilfsmittels zum manuellen Umsetzen von Sitz zu Sitz
JF  - Beitrag zum 66. Kongress der Gesellschaft für Arbeitswissenschaft
Y1  - 2020
SN  - 978-3-936804-27-0
SP  - A.14.2
PB  - GfA-Press
CY  - Dortmund
ER  - 
TY  - CHAP
A1  - Ibenthal, E.
A1  - Sobkowicz, S.
A1  - Backhaus, C
T1  - Investigation of Clamping and Crushing Injuries with Electrically Height-Adjustable Therapy Beds
T2  - Contribution to the 22th International Human Computer Interaction Conference
Y1  - 2020
U6  - http://dx.doi.org/10.1007/978-3-030-49904-4_10
SP  - 132
EP  - 144
ER  - 
TY  - JOUR
A1  - Backhaus, C.
A1  - Homann, H.
A1  - Jäger, M.
T1  - Entwicklung und Evaluation eines Hilfsmittels zum manuellen Umsetzen mobilitätseingeschränkter Personen in Verkehrsflugzeugen
JF  - Zentralbl. Arbeitsmed
Y1  - 2020
U6  - http://dx.doi.org/10.1007/s40664-020-00390-x
VL  - 70
SP  - 164
EP  - 171
ER  - 
TY  - JOUR
A1  - Siebers, S.
A1  - Sannwaldt, F.
A1  - Backhaus, C.
T1  - Vergleich grundlegender Aufgaben in VR und echtem Szenario
JF  - Beitrag zum 66. Kongress der Gesellschaft für Arbeitswissenschaft
Y1  - 2020
SN  - 978-3-936804-27-0
SP  - B.1.5
PB  - GfA-Press
CY  - Dortmund
ER  - 
TY  - JOUR
A1  - Ibenthal, E.
A1  - Kehmann, M.
A1  - Backhaus, C.
T1  - Feasibility of a Music System Intervention to Affect Mental Stress and Strain of Employees in Inpatient Dementia Care
JF  - Annals of Work Exposures and Health
Y1  - 2020
U6  - http://dx.doi.org/10.1093/annweh/wxaa120
VL  - 65
SP  - 591 – 604
ER  - 
TY  - CHAP
A1  - Backhaus, C.
A1  - Benad, N.
A1  - Lau, H.-J.
A1  - Pleiss, T.
T1  - Verordnung (EU) Nr. 2017/745 über Medizinprodukte – Eine Einführung
T2  - Capanni F., Emmendörffer A., Steffen A., Stockhardt J. (Hrsg.) Medizinprodukte planen, entwickeln, realisieren
Y1  - 2020
SN  - 978-3-7406-0544-5
PB  - TÜV Media
CY  - Köln
ER  - 
TY  - JOUR
A1  - Ibenthal, E.
A1  - Müller, L.
A1  - Backhaus, C.
T1  - Gebrauchstauglichkeit und Akzeptanz mobiler Personenlifter
JF  - mt-Medizintechnik
Y1  - 2020
SN  - 0344-9416
VL  - 140
SP  - 17
EP  - 20
ER  - 
TY  - JOUR
A1  - Müller, L.
A1  - Backhaus, C.
T1  - "Gut bedienbar? Ja, klar, das sehe ich sofort!"
JF  - mt-Medizintechnik
Y1  - 2020
SN  - 0344–9416
VL  - 140
SP  - 2
ER  - 
TY  - JOUR
A1  - Backhaus, C.
A1  - Pawelzik, L.
T1  - Human Factors in der Kardiotechnik
JF  - Kardiotechnik
Y1  - 2020
SN  - 0941-2670
VL  - 29
SP  - 2
ER  - 
TY  - JOUR
A1  - Schümmer, Andreas
A1  - Mertins, Hans-Christoph
A1  - Schneider, Claus Michael
A1  - Adam, Roman
A1  - Trellenkamp, S
A1  - Borowski, R
A1  - Juschkin, L
A1  - Berges, u
T1  - Fast and easy fabrication methodology of Fresnel zone plates for the extreme ultraviolet and soft x-ray regions
JF  - Applied Optics
Y1  - 2019
U6  - http://dx.doi.org/10.1364/AO.58.001057
VL  - 58
IS  - 4
SP  - 1057
EP  - 1063
ER  - 
TY  - JOUR
A1  - Morawetz, Klaus
A1  - Männel, Michael
T1  - Coexistence of phase transitions and hysteresis near the onset of Bose-Einstein condensation
JF  - Verhandlungen der DPG
Y1  - 2019
UR  - https://www.dpg-verhandlungen.de/year/2019/conference/rostock/search?query=Morawetz&submit=Suchen
SP  - 1
ER  - 
TY  - CHAP
A1  - Morawetz, Klaus
T1  - Bose condensation of squeezed light
T2  - Verhandlungen der DPG
Y1  - 2019
UR  - https://www.dpg-verhandlungen.de/year/2019/conference/rostock/search?query=Morawetz&submit=Suchen
SP  - 1
CY  - Rostock
ER  - 
TY  - JOUR
A1  - Morawetz, Klaus
T1  - Chiral anomaly in Weyl systems: no violation of classical conservation laws
JF  - Physics Letter A
Y1  - 2019
U6  - http://dx.doi.org/10.1016/j.physleta.2019.01.042
SP  - 1362
EP  - 1363
ER  - 
TY  - JOUR
A1  - Morawetz, Klaus
T1  - Weyl systems: anomal transport normally explained
JF  - European Physical Journal B 92
Y1  - 2019
U6  - http://dx.doi.org/10.1140/epjb/e2019-90514-3
SP  - 176-1
EP  - 176-15
ER  - 
TY  - JOUR
A1  - Morawetz, Klaus
T1  - Exploring anomalies by many-body correlations
JF  - arXiv
Y1  - 2019
UR  - http://arxiv.org/pdf/2004.01507.pdf
SP  - 1
EP  - 12
ER  -