Materials Literature
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Abstract The polymer‐stabilized blue phase liquid crystals are in the limelight of liquid crystal display area because of its fast response and wide viewing angle with alignment layer free. The conventional device is driven by in‐plane field, which has thin electrodes only on bottom substrate and also due to low Kerr…
We performed electrical transport measurements on a DNA-conjugated single-wall carbon nanotube (SWCNT) field-effect transistor (FET) at various temperatures ( T s). At T = 300 K, the gate action of the SWCNT FET clearly exhibited n-type behavior, while the bare SWCNT FET showed usual p-type characteristics. The value…
The turn-to-turn short is one major fault of the motor faults of BLDC motors and can appear frequently. When the fault happens, the motor can be operated without breakdown, but it is necessary to maintain the motor for continuous working. In past research, several methods have been applied to detect winding faults. Th…
Eu was implanted into high quality cubic (zincblende) GaN (ZB-GaN) layers grown by molecular beam epitaxy. Detailed structural characterization before and after implantation was performed by x-ray diffraction (XRD) and Rutherford backscattering/channeling spectrometry. A low concentration (<10%) of wurtzite phase incl…
A mechanoactivation of Ti-Co mixtures was used to perform the SHS of Ti-Co alloys without preheating and heat-generating additives. The SHS of Ti-Co alloys from non-activated Ti + Co green mixtures containing an admixture of B4C as a heat-generating agent without preliminary heating was carried out for the first time.…
Phase formation has been studied in the complex system YbAl 3 (BO 3 ) 4 – K 2 Mo 3 O 10 – B 2 O 3 – Yb 2 O 3 within the stability region of YbAl 3 (BO 3 ) 4 (YbAB). The obtained data were compared with those for YAl 3 (BO 3 ) 4 as another end member of the YbAB-YAB solid solutions. Visually transparent (Er,Yb):YAl 3 (…
Abstract A new particle design method was proposed for the production of hydrophobic corn starch with high flowability by surface modification. The flowability and hydrophobicity of the native and modified corn starches were investigated by wettability (activation index) and flowability experiments (flow time), scanni…
Abstract We report a polymer‐stabilized isotropic liquid crystal mode comprising submicro‐structured nematic liquid crystal polymer composites as an ultrafast display mode with sub‐millisecond response time. Electro‐optic Kerr effect is observed at the temperature lower than nematic‐isotropic transition temperature of…
Abstract There is a great interest in the understanding of mechanical properties of nanocrystalline materials, especially of those processed by severe plastic deformation, since those exhibit both high strength and considerable ductility. A special setup for X-ray line profile analysis was developed for monitoring the…
Abstract The authors developed a coating concept based on amorphous Si/C/N coatings, with promising high temperature properties. Due to a graded coating design, the adhesion, the coating hardness as well as the coefficient of friction were optimized. The coatings showed excellent high temperature stability against che…
A new zinc oxide nanowire (NW) gas sensor based on the commercially available 0.35 µm complementary metal–oxide–semiconductor (CMOS) process is developed. The smart gas sensor consists of a gas-sensing resistor and an interface circuit for resistance measurement. The single ZnO NW synthesized by the vapor–liquid–solid…
Examples of the effects of interionic H-bonds on the structural features and properties of onium fluorosilicates are analyzed and systematized. Potential applications of these effects are ascertained.
Solid oxide fuel cells (SOFCs) are electrochemical devices that offer advantages over conventional power generation systems in terms of their high efficiency of power generation, low emission of green house gases and the flexibility of fuel usage. The major research focus of recent times is to lower the operating temp…
Conventional formulation of holographic polymer dispersed liquid crystal (HPDLC) has been doped with TiO2 nanoparticles. It was found that local electric field across the LC domain was effectively increased by the TiO2 inclusion in polymer, and the film was electrically driven. Typical inverted sigmoidal decrease to a…
The spectra of luminescence and magnetic circular polarization of luminescence in the 1 D 2 → 3 F 4 emission band in thulium:yttrium-aluminum garnet Tm3+:YAG (Tm3+:Y3Al5O12) have been investigated at temperatures T = 78 and 293 K, respectively. Based on the analysis of the magnetooptical and optical spectra, the optic…
The contact dynamics (CD) method is an efficient simulation technique of dense granular media where unilateral and frictional contact problems for a large number of rigid bodies have to be solved. In this paper, we present a modified version of the CD to generate homogeneous random packings of rigid grains. CD simulat…
Article Influence of Metal Oxide on the Fixation of Chlorine in Thermal Decomposition of Poly (vinylidene chloride co vinyl chloride) was published on June 1, 2009 in the journal High Temperature Materials and Processes (volume 28, issue 3).
A distributed phase shifter of coplanar waveguide (CPW) using ferroelectric (Ba0.25Sr0.75TiO3) film varactors with parallel-plate electrodes is presented. In order to satisfy the requirement of small dimension of the parallel-plate varactor for the design of phase shifter and impedance match of the circuit, two parall…
Castor oil, 2,4-tolylene diisocyanate (2,4 TDI), cellulose acetate, and hydroxiethyl cell u- lose, based polyurethane (PU) - polyacrylic acid (PAA) sequential interpenetrating polymer networks (IPN's) were synthesized. PU's were prepared by reaction of hydroxyl groups from castor oil, and ce l- lulose acetate or hydro…
Novel thermosensitive nano-micelles, based on Poly(D,L-lactide-co-glycolide)-b-poly(ethylene glycol)-b-poly(D,L-lactide-co-glycolide) (PLGA-PEG-PLGA), as carriers for drug delivery were researched. The critical micelle concentration of the copolymer in aqueous solution was determined to be 2.34 microgram/ml by fluores…