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Wie viel ist wenig? Untersuchung zur Quantifizierung physischer Inaktivität an Fahrerarbeitsplätzen
(2016)
Verloren im Ballungsraum Intensivstation - Kommunikation zwischen Mensch und Maschine im Krankenhaus
(2006)
Vergleichende Evaluation der ergonomischen Gestaltungsqualität von Gepäckförderbändern auf Flughäfen
(2007)
Usability: Unique Selling Point of Market Leaders, Basics for Safety and User´s Satisfaction
(2006)
Usability-Engineering - Eine Methodenübersicht zur anwendergerechten Gestaltung von Medizinprodukten
(2001)
Usability of Medical Devices
(2006)
Untersuchung zur Anwendungsqualität von menügesteuerten Applikationsgeräten zur Infusionstherapie
(2005)
Untersuchung des Einflusses von Augmented Reality auf die Beanspruchung eines Kardiotechnikers
(2019)
Universal short-time response and formation of correlations after quantum quenches, K. Morawetz
(2017)
Ultrakurzpuls Laserbearbeitung mit resonatorexterner Strahlformung durch deformierbare Spiegel
(2015)
Two-photon polymerization with diode lasers emitting ultrashort pulses with high repetition rate
(2020)
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.
Transient time period
(2016)
Torsions- und Druckbelastung am Knick-Senkfuß mit und ohne sensomotorisch wirkender Fußorthese
(2018)
Consequences of the consistent exact solution of Einstein{Cartan equation on the time dependence of Hubble parameter are discussed. The torsion leads to a space and time-dependent expansion parameter which results into nontrivial windows of Hubble parameter between diverging behavior.
Only one window shows a period of decreasing followed by increasing time dependence. Provided a known cosmological constant and the present values of Hubble and deceleration parameter this
changing time can be given in the past as well as the ending time of the windows or universe. The comparison with the present experimental data allows to determine all parameters of the model.
Large-scale spatial periodic structures appear. From the metric with torsion outside matter, it is seen that torsion can feign dark matter.
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.
The use of pressure distribution for the analysis of passing and shooting techniques in Soccer.
(2015)
The role of homophase and heterophase interfaces on transport properties in structured materials
(2011)
The production of free-standing large aspect ratio metal nanofilms by femtosecond laser separation
(2009)
We demonstrate a new method for the production of free-standing metal films of thickness down to several tens of nanometres. Films of different metals as well as multilayer structures have been produced by means of femtosecond laser-induced separation of evaporated layers from a plane glass surface. This technology enables the production of large-area films with different properties for optical or nanotechnological applications. We study the properties of the film and demonstrate the possibility of high-pass filtering of electrons with an energy of several keV by means of the free-standing films. The physical mechanisms leading to the film separation under femtosecond laser radiation are discussed.