Materials Literature
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Composite films based on poly(2,6-dimethyl-1,4-phenylene oxide) modified with a hybrid star-like polymer (1, 3, and 5 wt %) with a fullerene C60 branching center and polymer chain arms of various structures (nonpolar polystyrene and the polar poly(2-vinylpyridine)- block -poly( tert -butyl methacrylate) diblock copoly…
Abstract The catalytic activity and selectivity for propane combustion in the presence of CO have been studied with anatase, rutile, eskolaite, chromia‐impregnated anatase, and titania‐impregnated chromia and its physical mixtures. It was found that the selectivity and activity depend on the TiO2 modification. Cr‐dope…
We examine the localized nematic regions (caps) on spherical colloidal particles suspended in a nematogenic liquid in the isotropic phase in the bulk by solving the Poisson equation with an orientation-dependent dielectric tensor. These caps appear and grow with an increasing applied electric field. We assume positive…
This paper employs the rigid-plastic finite element (FE) DEFORMTM 3D software to investigate the plastic deformation behavior of Ti-6Al-4V titanium alloy during ECAE extrusion forming processing. Under various ECAE extrusion forming conditions, the FE analysis investigates punch load distribution and the effective str…
Semiconductor nanoparticles, especially quantum dots (QDs), exhibit favourable optical properties for fluorescence imaging. Simultaneous excitation, without the need for monochromatic light and sharp emission bands allow the development of fast and sensitive multiplex immunoassays. Nano dyes can replace conventional o…
Vocal folds are complex and multilayer-structured where the main layer is widely composed of hyaluronan (HA). The viscoelasticity of HA is key to voice production in the vocal fold as it affects the initiation and maintenance of phonation. In this study a simple layer-structured surface model was set up to mimic the s…
Results of computational study of few-layer graphene (FLG) nanostructures as storing cells for Li are presented. Results of modeling revealed some features of these systems, which can cause dimensional instabilities and shortening of the life time of Li-based power sources. Some peculiarities of lithium diffusion moti…
Large area arrays of vertically-aligned carbon nanotubes (VACNTs) are patterned in a quasi-crystalline Penrose tile arrangement through electron beam lithography definition of Ni catalyst dots and subsequent nanotube growth by plasma-enhanced chemical vapour deposition. When illuminated with a 532 nm laser beam high-q…
Chimerical proteins consisting of enhanced yellow fluorescent protein (EYFP) connected by linkers of different length and nature to the N-terminal end of small heat shock protein HspB1 were obtained and characterized. To obtain fluorescent chimeras with properties similar to those of unmodified small heat shock protei…
A simple and straightforward nanofabrication method for the creation of gold nanoparticles patterns on a biologically inert plasma-deposited poly(ethyleneoxide) film for sensing and cell culture applications.
Nitrogen mustard ionic carbonate with stable carbonate moiety was synthesized and cross-linked with the biopolymer chitosan. Subsequently, nanoparticles of cross linked chitosan were prepared for wound healing application.
In the paper we demonstrate how Particle Swarm Optimization (PSO) can be employed to solve the Adaptive Impact Absorption (AIA) problem. We consider a truss structure which is subjected to impact loads. Stiff bars can be replaced by elastoplastic fuses which control theirs dynamical response. The point of optimization…
Cold Metal Forming is one of the most frequently used sheet metal manufacturing processes because of high material efficiency, accuracy grade and surface quality as well as short cycle times of the produced parts. In order to reach the requirements for both quality of the components and process stability, minimizing t…
To clarify the relation between the ON-voltage of power semiconductors in the inverter and the magnetic properties such as iron loss and the magnetic hysteresis curves, the PWM shaped voltage with the virtual ON-voltage is realized experimentally by means of an arbitrary function generator and an amplifier excitation.…
The cover picture shows puffball-shaped, flavin-functionalized, monolayer-protected gold nanoparticles that efficiently catalyze aerobic transformations. In their Full Paper, Y. Imada, T. Naota and co-workers describe the synthesis of PPh3-protected gold clusters functionalized with cationic and neutral flavins, and t…
The semiconductor industry has long been seeking a new kind of non-volatile memory technology with high-density, high-speed, and low-power consumption. This study demonstrated the electrochemical synthesis of ZnO films without adding any soft or hard templates. The effect of deposition temperatures on crystal structur…
The triphosgene carbonate synthesis is adapted towards an alternating main-chain rod/coil polycarbonate based on a telechelic sexithiophene oligomer, yielding an electrochromic material displaying morphological behaviour typical of a liquid-crystalline polymer.
Anisotropic dewetting polydimethylsiloxane (PDMS) surfaces, which consist of groove-like micro/ nanostructures (so-called hierarchical structures), are fabricated using an ultrashort pulsed laser. The contact angles (CAs) are measured parallel to the microgrooves, which are always larger than those measured perpendicu…
Metal corrosion is a charge transfer process.Study of corrosion and corrosion protection requires manifold knowledge in he field of thermodynamics, reaction kinetics, catalysis, transport and surface phenomena.Dealloying, biocorrosion, corrosion effects of electric traction and energy systems are also very important s…
The objective of this study was to develop a two-dimensional mathematical model that can beused to calculate the heat transfer in larch boxed-heart square timber during the preheating process. The preheating time obtained with the calculations agreed with the experimental results. Both experiments and calculations ind…