Materials Literature
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The design space of conventional semiconductor devices - from the materials point of view - is currently set by heteroepitaxy, whose capability is strongly limited by lattice parameters and structures of materials of interest. Heterostructures of substantially different semiconductors may offer significant advantages…
This paper describes the relationship between sintering time conditons, tetragonality from phase formation, dielectric and ferroelectric characteristics of tetragonal PLZT (lanthanum modified lead zirconate titanate) ceramics with the pressureless sintering conditions. Ferroelectric compounds of Pb0.92La0.08(Zr0.4,Ti0…
The transition to semiconductor manufacturing on 450mm wafers continues to be one of the biggest challenges in the semiconductors industry. Even though lithography is critical for 450mm development, process tools such as ion implantation and associated metrology are also challenged by scaling-up to keep acceptable CoO…
Quantitative analysis of PET data requires a metabolite-corrected arterial input function (AIF) for estimation of distribution volume and related outcome measures. Collecting arterial blood samples adds risk, cost, and patient discomfort to PET studies. Minimally invasive AIF estimation is possible with simultaneous e…
AlGaN/GaN high elerton moblity transistors (HEMTs) with about 90 nm gate and 18nm-thick AlGaN barrier were fabricated on SiC substrate. The DC and RF characteristics were mearsured. The device has achieved a maximum drain current density of 1.2A/mm at a gate bias of +1.0V and a peak extrinsic transconductance of about…
Kraft paper is widely used in oil-paper insulation of power transformer. This type of cellulose insulation paper degrades under the combined influence of a number of interrelated factors, including moisture and electric field, during the long-term running process of power transformer. And researchers have conducted a…
It is well known that devices based on chemical vapor deposited (CVD) graphene exhibit substantial variability of their electrical properties [1]. However, the sources of such variability and how they might be controlled remain poorly understood. Here, we methodically investigate variability of CVD graphene field-effe…
A wide variety of physical and chemical detecting methods have been proposed for discriminating between an electric arc beads that caused a fire, versus one that was caused by the fire itself. The simplest proposed method claims that examination of the molten marks in a bead under a microscope will suffice to make the…
Poly-β-hydroxybutyrate-co-β-hydroxyvalerate (PHBV) is a bacterial-synthesized biopolymer. Moreover, PHBV is a biodegradable, it is an interesting biopolymer for disposable products. PHBV is difficult to process due to its low toughness, an elastic polymer such as natural rubber is introduced to develop toughness. In t…
A model was developed to describe the luminescent down-shifting (LDS) process in photovoltaic application. The model links the Jscenhancement (JLDS%) of the solar cell to the photophysical properties including absorption (λabs) and emission (λem) wavelengths, Stokes shift (Δλ) and spectral cutting point (λSCP), as wel…
InAs gate-all-around (GAA) nanowire MOSFETs are experimentally demonstrated for the first time by a top-down approach[1-3]. Thanks to the well-controlled nanowire release process and the novel ALD high-k/metal gate stack process, InAs nFETs with channel length (Lch) ranging from 380 to 20 nm and nanowire width (WNW) f…
In this work, a general simplified thermal model for totally enclosed variable speed radial machines is proposed. The parameters of the thermal model are calculated with simple equations based on the geometrical dimensions and material of the electrical machine. In this paper, the design procedure is described in deta…
We discovered that by changing the dielectric capping layer above the phase change memory element we can change the SET speed and data retention of the memory. This allows us, for the first time, to integrate memories of different functions on the same chip with simple processes. By using a low temperature silicon nit…
This paper is mainly to discuss that myclobutanil as corrosion inhibitor and its corrosion efficiency were evaluated via electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization. The potentiodynamic polarization measurements showed that the inhibition efficiency increases sharply with the increasi…
The microstructural and technological properties of clay ceramic incorporated with 10 and 20 wt% of elephant grass ashes were investigated at different firing temperatures of 650, 850 and 1050oC. X-ray diffraction were used to obtain the minerals and phase compositions. The microstructure was analyzed by scanning elec…
Polyacrylamide (PAM) was chemically anchored to the surface of multi-walled carbon nanotubes (MWCNTs) by atom transfer radical polymerization (ATRP) of acrylamide (AM). It started from the functional groups such as –COOH on the sidewall of MWCNTs, which derived from the oxidation of carbon nanotubes. FT-IR and 1H NMR…
Zero-field muon spin rotation/relaxation (μSR) measurements were performed in order to clarify the effect of oxygen reduction and Ce-substitution on magnetic properties in T’-structured Pr1.40-xLa0.60CexCuO4+δ−α. At 75 K, a clear rotation signal was observed in the three samples; as-sintered x = 0 and annealed x = 0,…
In this paper conceptual design study of modified CANDLE burn-up scheme based 400 MWt small long life Pb-Bi Cooled Fast Reactors with natural Uranium as Fuel Cycle Input has been performed. In this study the reactor cores are subdivided into 10 parts with equal volume in the axial directions. The natural uranium is in…
The concept and design of terahertz (THz) digital phase shifter based on graphene Gate-controlled Switchable Devices (GSD) with Defected Ground Structures (DGS). It is shown that the graphene based Unit Phase Shifter (UPS) may enable viable applications of gate controlled switchable devices for THz wideband antenna sy…
In this research, FINEMET alloy with composition of Fe73.5Si13.5B9Nb3Cu1was produced by mechanical alloying from elemental powders. The effect of milling time on the magnetic and structural properties of alloy has been investigated using X-ray diffraction, scanning electron microscopy, transmission electron microscopy…