Materials Literature
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Photoinduced current transient spectroscopy (PICTS) has been utilized to study electrically active defects in TlInS 2 single crystals doped with Er, B, and Tb. Eight traps with activation energies lying in between 0.21 to 0.55 eV have been detected. The origin of these traps is discussed.
This paper introduces the method of on-line measurement of the yarn evenness using a CCD image sensor. The sensor is mounted on a movable bracket of the small car. The obtained yarn coefficients of variation in the diameter through computer and digital image processing techniques are compared with those of using off-l…
Integration of porous low dielectric constant materials constitutes a major roadblock in the reliable manufacturing of back end of the line (BEOL) wiring for the advanced technology nodes. The two main issues for Ultra low-k (ULK) materials are their low mechanical properties and high sensitivity to plasma induced dam…
The paper presents an analysis of the thermo-kinetic field - the heat dissipation on an electronic structure, triac and heat sink. The analysis method proposes an electro-kinetic model, analogue to the thermo-kinetic model, validating the electro - thermal analogy as a possible solution for the problem. The convection…
The anomalous behavior of the electrical conductivity of transparent poly(vinyl chloride) films is experimentally studied at field voltages approaching the breakdown threshold, above the threshold, and far below the threshold. The effects of strong nonlinearity, relaxation drifts, and spontaneous reversible transition…
Photoinduced current transient spectroscopy (PICTS) has been utilized to study electrically active defects in TlInS 2 single crystals doped with Er, B, and Tb. Eight traps with activation energies lying in between 0.21 to 0.55 eV have been detected. The origin of these traps is discussed.
We have synthesized single- and poly-crystalline Ba 8 Al x Si 46−x clathrates to compare their thermoelectric properties. Single-crystal sample was prepared by Czochralski(CZ) method in an argon atmosphere. Poly-crystal sample was prepared by arc melting and annealed at 850°C for l00h in an argon atmosphere. The Seebe…
The objective of the present study was to investigate the ability of Cupriavidus necator to produce poly-(3-hydroxybutyrate-co-3-hydroxyvalerate) on various carbon sources in batch cultivation. These results show that C. necator produces poly-3-hydroxybutyrate from single carbon sources. The highest poly-3-hydroxybuty…
We report on the observation of significant optical bistability in the transmission and reflection properties of mesoporous silicon microcavities when illuminated with a 150 ns pulsed laser at 532 nm. The observed optical hysteresis is shown to be transient in nature and the properties are strongly dependent on the po…
The organic solvent lignin in this paper was extracted from the scrap liquid of the reed ethanol pulping. The attained lignin was characterized by Scanning Electron Microscope（SEM）.On this basis，the lignin is blended with PVC and other auxiliaries, PVC/lignin composite material is prepared by pressure molding. The mec…
Single-walled carbon nanotubes (SWCNT) are being developed to be used in many industrial and biomedical applications. However, SWCNT's durability and likely fibrous morphology have raised health concerns. The present investigations were focused on understanding the cellular and molecular mechanisms induced by raw SWCN…
The rehabilitation properties of intelligent concrete beam reinforced with shape memory alloys (SMA) is investigated. In this study, SMA strands, made of 7 single wires, are used to replace the steel bars in ordinary concrete beam. The test of single point loading at the mid-span is conducted on the beam. The experime…
The current—voltage (I—V) characteristics and the transmission spectra of zigzag graphene nanoribbon with different spin-configurations are investigated by using first-principles calculations. It is shown that the I—V curves and transmission spectra strongly depend on the spin-configurations of the two sides of the ri…
Abstract : Recent experimental work within the U.S. Army Research Laboratory has identified the formation of nanoscale-sized intragranular amorphous bands leading to a marked reduction in ballistic performance of boron carbide (B4C). This pressureinduced amorphization has been examined through application of the Born…
The temperature coefficient of resistance (TCR) in V 1- x W x O 2 (VWO) with various W-doping levels and thicknesses were investigated on Al 2 O 3 (0001) single crystal substrates. The VWO thin films with an appropriate doping level ( x =0.015) showed high TCR over 10%/K just at room temperature (300 K), which was lar…
Effect of an electric field parallel to the easy axis on the structure and dynamics of a domain wall (DW) in ferromagnets with a large quality factor with allowance for a small orthorhombic anisotropy has been studied. It has been shown that in an electric field there is formed a DW with a structure that is intermedia…
Supercapacitors are emerging new devices for many applications, either as main energy sources or as energy buffers, due to their high power density. To study possible applications of supercapacitors, a terminal model describing the dynamic behavior of supercapacitors is required. In this paper, a simple electrical equ…
We present our work towards the development of a MR image-guided SMA-actuated neurosurgical robot. We used two antagonistic SMA wires as actuators for each joint in the robot, so that each joint can be actuated independently. We also modeled and tested the force behaviour of SMA wires in the bent configuration, which…
The authors have fabricated Au nanodot arrays using anodic aluminum oxide (AAO). Two types of AAO, namely, hexagonal and matrix pores, were used as a template for Au deposition. Au nanodots with a controlled size between 20 and 80 nm were obtained by changing the pore size in the AAO template. AAO templates of 200 nm…
To enhance the efficiency of multistage thermoelectric coolers, extruded materials based on p - and n -type solid solutions of bismuth and antimony chalcogenides have been optimized for particular temperatures in the range 100–300 K. We have studied the effect of selenium doping on the thermoelectric efficiency of the…