Materials Literature
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A multiphoton process to the conduction band of the insulator Er2O3 is reported, which occurs in vacuum under near infrared excitation. The enormous upconversion intensity is two orders of magnitude greater than that in air, and also the intensity ratio for green and red emission bands is inverted. The mechanism is pr…
Ultra-high frequency (UHF) methods for detecting and locating partial discharges (PD) are well established for gas insulated equipment. This paper provides an overview of their application to power transformers, discussing practicalities, capabilities and challenges. In recent years, UHF PD detection has proved helpfu…
We present a theoretical study on interactions of electrons in graphene with surface acoustic waves (SAWs). We find that owing to momentum and energy conservation laws, the electronic transition accompanied by the SAW absorption cannot be achieved via inter-band transition channels in graphene. For graphene, strong ab…
Transverse piezoelectric property of 0.91Pb(Zn(1/3)Nb(2/3))O(3)-0.09PbTiO(3) (PZN-9%PT) single crystal poled along [011] direction under different fields have been investigated, the poling field giving the best property was between 350 and 650 V/mm at room temperature. Full tensorial elastic, dielectric, and piezoelec…
We consider an approach to the derivation of thermodynamic equations of state by averaging the dynamic equations of particles of the crystal lattice. Microscopic analogs of macroscopic variables such as pressure, volume, and thermal energy are introduced. An analysis of the introduced variables together with the equat…
Chromium used in leather manufacturing can be oxidized from the trivalent to the hexavalent state, causing environmental concerns. In this study, the influence of Cr(III) from tanning, deacidification pH, fatliquors, chrome retanning and vegetable retanning on the formation of Cr(VI) in leather was analyzed by compari…
tert-Butylphenylnitroxide (BPNO(•)) and α,γ-bisdiphenylene-β-phenylallyl (BDPA(•)) stable radicals are each attached to zinc meso-tetraphenylporphyrin (ZnTPP) at a fixed distance using one of the ZnTPP phenyl groups. BPNO(•) and BDPA(•) are oriented para (1 and 3, respectively) or meta (2 and 4, respectively) relative…
In this work, we report on conducting polyaniline (PANI) nanostructures synthesized by a simplified template-free self-assembly method, which are doped with different oxidants such as ammonium persulfate (APS), FeCl 3 , Fe(NO 3 ) 3 , and Fe 2 (SO 4 ) 3 . It is found that the morphologies of the as-prepared PANI nanowi…
Atomic Environment Calculation (AEC) is a computation method for calculating atomic environment properties of every atom in any crystal. These properties include types of neighboring atoms and their spatial distribution, bond lengths sorted in an ascending order, atomic space coordination number, and atomic pair coord…
A novel biaxial nematic phase is theoretically predicted in mixtures of a low-molecular-weight liquid crystalline molecule and a rigid rod-like polymer, such as carbon nanotubes and liquid crystalline polymers, where the two components favour a mutually perpendicular orientation. We demonstrate that rods dispersed in…
Nano-sized silica particles were synthesized by sol-gel reaction. Epoxy resin/nano-silica composites were prepared by high-speed mixing after ultrasonic dispersion. By using electron microscopy and scanning electron microscope (SEM) techniques, the particle dispersion in the epoxy resin/nano-silica composites is studi…
In this work, we investigated the fabrication of 10-nm-order block copolymer self-assembled nanodots using high-etching-selectivity polystyrene–poly(dimethylsiloxane) (PS–PDMS) block copolymers for high-density storage devices. We adopted PS–PDMS polymers with two different molecular weights of 13,500–4,000 and 11,700…
This paper proposes an electrical model of carbon-nanotube (CNT) networks, that can be patterned using inkjet transfer printing. The Double-Walled carbon Nanotubes (DWNTs) “inkjet”-able suspension was deposited in gaps of variable lengths cut out of the central line of the coplanar waveguide test structure. The propos…
In this paper, focusing on inverter characteristics without attempting to build a highly scaled device, we report the first room-temperature, electrostatic doping controlled complementary graphene inverter with a gain larger than one.
Tunable parallel-plate capacitors employing Bi(1.5)Zn(1.0)Nb(1.5)O(7)/Ba(0.5)Sr(0.5)TiO(3) (BZN/BST) thin films for RF applications are reported. The intermediate frequency measurements indicate that the BZN/BST-based varactors demonstrate large tunability of 39% at 40 V and high device quality factor of 300 at 1 MHz.…
Abstract We have fabricated a prototype of a field‐sequential blue phase mode LCD having an integrated scan driver including an oxide semiconductor FET. By using the blue phase mode, the frame rate of 180 fps a subframe frequency of 540 Hz or higher is now available. We obtained favorable images without color breakup.
Abstract We realized a blue‐phase liquid crystal display with low driving voltage and high contrast by using a liquid crystal material which is easily twisted and a protrusion electrode structure. Further, we made a prototype of a 3.4‐inch panel by a novel manufacturing process suitable for a large‐sized panel.
Electrochemical Synthesis of ZnO Nanoparticles During Anodic Dissolution of Zinc in Alcohols Solvents Studies of the effect of the kind of alcohol, electrolyte concentration and water on the anodic dissolution of zinc and the nature of dissolution products were performed. The dissolution products were analyzed by spec…
We describe a simple and effective method to obtain colloidal surface-functionalized Au nanoparticles. The method is primarily based on irradiation of a gold solution with high-flux X-rays from a synchrotron source in the presence of 11-mercaptoundecanoic acid (MUA). Extensive tests of the products demonstrated high c…
The polarization properties of magnetically biased graphene are investigated. It is shown that graphene rotates the polarization of a perpendicularly incident linearly polarized plane wave. The rotation angle dependence on the chemical potential and on the magnetic bias field is analyzed. Substantial rotation is found…