Materials Literature
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Proton exchange membrane (PEM) fuel cells are considered to be one of the most promising energy conversion systems for replacement of conventional energy sources based on fossil fuels for automobiles and mobile devices [1]. An often used membrane material facilitating the proton transport is a Nafion polymer membrane,…
We investigate the eigenmodes of both ultrathin quadrifilar spirals and ensembles made up of such spirals by comparing experimental near-field scans with numerical finite-element models. These modes can be understood in the picture of electric and magnetic localized spoof plasmons.
Bond order parameters and scaling indices are local measures which are used to determine local structures in a point distribution. Local invariants, which measure the angular relation between the point and its next neighbors, are calculated for each point in the distribution for determining the bond order parameters […
In this study, Fe3O4 nanoparticles containing Poly(N-isopropylacrylamide) (PNIPAM) thermosensitive hydrogel in different cross-linker agent were synthesized and characterized. Additionally, adsorption and desorption of lysozyme from these composite materials also studied at above and below lower critical solution temp…
In dieser Arbeit werden die Ergebnisse einer Versuchskampagne mt der neuesten Generation von im Rahmen des Deutschen Nationalen Geltechnologie Programmes entwickelten monergolen Gelen vorgestellt. Ziel dieser Untersuchung war die Bestimmung der unter Betriebsgrenzen hinsichtlich Brennkammerdruck und Brennkammerverweil…
Na producao industrial de cafe soluvel, grandes quantidades de residuo de borra de cafe sao geradas. Em media, para cada tonelada de cafe verde, 480kg de borra e produzida. Este um residuo solido, usado atualmente para gerar energia nas caldeiras da industria de cafe soluvel, ou tambem como adubo na agricultura. Busca…
Radiation resistant Al 2 O 3 (corundum) is a promising material for fusion reactors, e.g. for construction components of the diagnostic systems.This is very important to predict/simulate the kinetics of diffusion-controlled defect accumulation under neutron irradiation as well as long-time defect structure evolution.T…
T abundant availability of cellulose resources and the favourable mechanical properties of its microfibrillated compounds make them as good candidate for reinforcing agents in biocomposites. However, problems in homogeneous dispersive and distributive mixing of the cellulose additives due to their highly hydrophilic n…
A totally bio-based approach has been applied to produce thermosetting polymers comparable to synthetic polyester thermosets. Condensed tannin-lipid conjugates have been copolymerized with vegetable oils to produce copolymer films ranging from rigid thermosets to soft rubbers. Reactivity and vegetable oil quantity emp…
Abstract Theoretical description of the photoalignment process details is an urgent task to make the LC alignment more perfect and develop displays with new functions. In this paper we describe formation of photoaligning dye dimers and influence of their molecular structure on both polar W θ and azimuthal W φ anchorin…
The magnetism and magnetocaloric effect in Er 1 − x Gd x CoAl ( x = 0, 0.1, 0.2, 0.4, 0.6, 0.8, 1) were investigated. The Er 1 − x Gd x CoAl compounds were synthesized by arc melting. With the increasing Gd content, the Néel temperature ( T N ) linearly increases from 14 K to 102 K, while the magnetic entropy change (…
status: Published
Extensive and systematic simulation studies of two-dimensional polymer systems were performed. In contrast to other works we focused on cooperative phenomena that occurred where the motion of particles takes place in a dense system. Comparison studies of athermal cyclic and linear polymer chains systems on the two-dim…
Abstract We present results of studying the intensive bistable light scattering in an electro‐optical cell filled with a specially designed helix‐free ferroelectric liquid crystal (FLC). A stable scattering state can be switched on and off for 70–100 μs and memorized for a few tens of seconds.
Gas diffusion mechanisms and diffusion coefficients in microkinetic system of solid materials characterize the different performance of chemical and transport processes. These factors should be evaluated with respect to the range of diffusion coefficients based on the number of experimental methods. Here, impedance sp…
Aufgrund des vermehrten Leichtbaus werden in Flugzeugstrukturen zunehmend FKV-Werkstoffe eingesetzt. Lasteinleitungen werden in der Regel mit Nieten realisiert. FKV-Werkstoffe besitzen jedoch eine geringe Lochleibungsfestigkeit und können deshalb nur geringe Lasten über Nieten, verglichen mit metallischen Werkstoffen,…
status: Published
Abstract In this article, we exploit an absorption‐scattering based high pitch length cholesteric liquid crystal active shutter. Using the two said fundamental optical properties, we have shown the resultant impact on optical transmission (ON & OFF state) is attracting the general lighting applications. Furthermore, t…
Effects of the growth temperature on morphological and microstructural evolution of a-plane GaN films grown on r-plane sapphires by metal organic chemical vapor deposition are investigated by atomic force microscopy and secondary ion mass spectroscopy (SIMS). Surface morphology, structural quality and related impurity…
18th International Symposium on Wood, Fibre and Pulping Chemistry, BOKU University, Vienna, Austria, 09-11th September 2015 9-11 September 2015. Due to copyright restrictions, the attached PDF file only contains the abstract of the full text item.