Materials Literature
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TiO 2 nanoparticles were physically attached to chemically synthesized single-layer graphene oxide nanosheets deposited between Au electrodes in order to investigate the electrical, chemical, and structural properties of the TiO 2 /graphene oxide composition exposed to UV irradiation. X-ray photoelectron spectroscopy…
Overexpression of drug efflux transporters such as P-glycoprotein (Pgp) protein is one of the major mechanisms for multiple drug resistance (MDR) in cancer cells. A new approach to overcome MDR is to use a co-delivery strategy that utilizes a siRNA to silence the expression of efflux transporter together with an appro…
Quantum-dot-sensitized solar cells (QDSCs) are a promising low-cost alternative to existing photovoltaic technologies such as crystalline silicon and thin inorganic films. The absorption spectrum of quantum dots (QDs) can be tailored by controlling their size, and QDs can be produced by low-cost methods. Nanostructure…
Atomistic quantum simulation is performed to compare the performance of zero-Schottky-barrier and doped source-drain contacts carbon nanotube field effect transistors (CNTFETs) with strain applied. The doped source-drain contact CNTFETs outperform the Schottky contact devices with and without strain applied. The off-s…
Abstract The bright yellow Schiff‐base complex Eu(TRENDSAL) ( 1 ) (TRENDSAL = N[CH 2 CH 2 N=CH(2‐OH‐3,5‐ t Bu 2 C 6 H 2 )] 3 ) was prepared in 71 % yield by treatment of EuCl 3 ·6H 2 O simultaneously with 3,5‐di‐ tert ‐butylsalicylicaldehyde and tris(2‐aminoethyl)amine in the presence of triethylamine. X‐ray crystal s…
Abstract The exfoliation corrosion behavior of an Al–Zn–Mg–Cu–Zr alloy containing Sc artificially aged at 120 °C for 24 h is studied by macroscopic observation techniques and electrochemical impedance spectroscopy (EIS) measurements. After 48 h immersion, the blisters start bursting and delamination initiates, along w…
Abstract Two medium‐sized ultrasonic motors using the first‐order bending vibration (B 1 ) of a cylinder with two free–free ends have been developed in this study. The cylinder‐shaped stators are 10 mm in diameter and 25 mm in length. They are based on novel Pb(Mg 1/3 Nb 2/3 )O 3 –PbTiO 3 (PMN–PT) single crystal and c…
Abstract In this article, we propose a new modification method for obtaining porous silk fibers with excellent wet elastic resilience and flexibility. Bombyx mori silks were modified by calcium‐salt treatment and subsequent epoxy crosslinking with glycerin triglycidyl ether. The effects of temperature, time, and catal…
Scaling problems and limitations of conventional silicon transistors have led the designers to exploit novel nano-technologies. One of the most promising and feasible nano-technologies is CNT (Carbon Nanotube) based transistors. In this paper, a high-speed and energy-efficient CNFET (Carbon Nanotube Field Effect Trans…
Abstract Polarized Raman spectra of a single crystal of gadolinium molybdate [Gd 2 (MoO 4 ) 3 ] were obtained between 1 atm and 7 GPa. Using a mixture of alcohols as the pressure‐transmitting medium, YY, ZZ, XY components of scattering matrices were measured. The ZZ spectra were also obtained in argon. Five phase tran…
By means of embedded optical transformation, three-dimensional diamond-shaped invisible cloaks composed of tetrahedral homogeneous blocks have been designed in this paper. The constitutive parameters of the invisible cloaks can be obtained based on the form invariance of Maxwell's equations in coordinate transformatio…
Analysis of ISCR8 (ISPps1) revealed that this group of insertion elements has to be subdivided into three subgroups: ISCR8, ISCR22, and ISCR23. The distinction of three subgroups is supported by phylogenetic analysis of the transposase open reading frames (ORFs). Comparison of over 20 complete and partial ISCR8/22/23…
In 1965, Armstrong and Head explored the problem of a pile-up of screw dislocations against a grain boundary. They used numerical methods to determine the positions of the dislocations in the pile-up and they were able to fit approximate formulae for the locations of the first and last dislocations. These formulae wer…
Time-trends of available potassium (K) in an arable land were investigated within long-term field fertilization experiments established in 1979 at nine sites across climatic and soil conditions of the Czech Republic. Annual K application rates necessary for a stabilization of available K at levels of 108–283 mg K kg−1…
We report a numerical investigation on the catalytic growth mechanism of a single-walled carbon nanotube (SWNT) inside a template SWNT, that is, formation of a double-walled carbon nanotube (DWNT). The molecular dynamics simulations together with complementary ab inito calculations suggest that the DWNT formation from…
The C14 Laves-phase ${\text{MgZn}}_{2}$ has been investigated from 30 to $36\text{ }\text{at}\text{.}\text{ }\mathrm{%}\text{ }\text{Mg}$. In this way chemical disorder can be monitored over a limited concentration range and the influence on electron properties can be investigated. Our studies include thermodynamic ca…
Abstract The effect of the combination of a benzotriazole type of UV absorber (UV326) with different types of thermal stabilizers, including an organic calcium complex and an organotin mercaptide, on the photodegradation of poly(vinyl chloride) (PVC) was investigated by color difference measurements, UV‐vis spectrosco…
The behavior of natural zeolites is important in any application that utilizes the gas adsorption properties of zeolites. Because of the large variety in the sizes of extraframework cavities and inter-cavity ports, the de/rehydration behavior varies considerably from zeolite to zeolite. Most zeolites have large extraf…
Abstract Viscoelastic and cure properties of styrene‐butadiene rubber compounds were investigated by using a “Rubber Process Analyzer.” The effects of sulfur content in the cure system and carbon black (CB) type and concentration on the cure behavior of samples were studied. As the ratio of S/accelerator in the curati…
Use of liquid carbon dioxide (l-CO2) in the uniform and dense deposition of CuS, PbS, or CdS quantum dots (QDs) with 2.5−4.5 nm in diameter onto mesoporous TiO2 films for quantum dot sensitized solar cell (QDSSC) applications is described. The low surface tension and the low viscosity of l-CO2 lead to uniform depositi…