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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 -