Materials Literature
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Among the wide band gap semiconductor materials that have drawn a lot of attention recently, ZnO and SiC are seriously considered as materials for emerging electronics applications. ZnO has received attention for its application for UV light-emitters, transparent high power electronics, sensors, piezo electric transdu…
In recent years, there is an increased threat of explosive attacks worldwide, as the explosive - based weapons are easy to make, obtain and deploy. Detecting traces of explosives is a challenging task because of the low vapor pressures of most explosives [1]. Protecting against explosive-based terrorism can be achieve…
Chemically synthesized semiconductor nanocrystal quantum dots (NQDs) are promising candidates for gain media in micro/nano-lasers. The key advantage of using these NQDs is wide-tunability of emission wavelength across the visible and near IR spectrum [1], which is achieved by synthesizing NQDs of different sizes. One…
With its wide bandgap and high critical field, GaN is a promising material for high power electronics. To date, most GaN films have been grown on foreign substrates such as sapphire or SiC. Lattice mismatch between the film and substrate leads to a large number of threading dislocations (~109-1010cm-2). These defects…
The electromagnetic response of a multiwall carbon nanotube (MWNT) of small cross-sectional radius and finite length was theoretically studied in the terahertz and sub-terahertz regimes, by solving an integral equation. The polarizability of the MWNT peaks in the terahertz regime, depending on the length and the numbe…
One-dimensional nanocrystals and nanowires due to their high crystal quality, ease of growth, control and diversity in their composition have become promising building blocks in a number of technologies including photovoltaic, chemical sensing and light sources. One of the technological barriers to integrate such nano…
During the last decades, amorphous silicon (a-Si) has been widely used for thin film transistors (TFTs). However, the need for an alternative to a-Si TFTs for next-generation display has increased. Therefore, transparent oxide semiconductor (TOS) has gathered a great amount of attention for use in active-matrix liquid…
Multiple layers of colloidal nanoparticles were used to make large area, visible blind and wavelength selective, ultraviolet (UV) photodetectors [1]. Polyvinyl-alcohol (PVA) coated ZnO nanoparticles were created by a top-down wet-chemical means and deposited on quartz, glass, or GaN-based substrates [1-3]. The advanta…
An experimental investigation on the performance of surface ignition 4S (four stroke) C.I (Compression Ignition) engine fueled with pure diesel (0/100) and ethanol-diesel blends ratio of 15/85, 25/75, 30/70 and 35/65 by volume of ethanol are evaluated. Amyl nitrate (B) additive is used to satisfy mixture homogeneity a…
Group III-nitride semiconductors and their ternary solid solutions are very promising as the candidates for both short wavelength optoelectronics and power electronic devices [1]. The AlGaN/GaN heterostructure field-effect transistors (HFETs) have a great potential for future high-frequency and high-power applications…
Thermoelectric (TE) refrigeration using Si-based nanostructures is an attractive approach for on-chip thermal energy harvesting and targeted cooling of local hotspots [1] due to the ease of on-chip integration and the nanowires' enhanced TE figure of merit [2] ZT=S2σ/(κl+κe) [3]. Silicon-on-insulator (SOI) membranes […
Controlling the growth of proper crystal morphology and defect density in Ni catalyst are necessary ingredients for achieving precision number of graphene layers [1] and good yields in CMOS transistor device fabrication. The size of grains can be controlled during sputter deposition but the apparent effects in charili…
Actinomycetes were widely distributed in soil are the source of antibiotics. Antibiotic resistant pathogens pose an enormous threat to the treatment of wide range of serious infections. To overcome this emergence, a periodic replacement of the new and existing antibiotic is necessary, simultaneously doses also increas…
CdS nanostructures have been grown on glass substrate by a modified chemical bath deposition method (MCBD) using CdCl2 (0.02 M), KOH (0.5 M), NH4NO3 (1.5 M) and HNCSNH (0.2 M) aqueous solutions at the bath temperature of 80°C and the pH of 10.40. Power adjustable Ar-Ion Laser beam with the powers of 150 mW, 250 mW, an…
This paper focused on corrosion behavior of grey cast iron having 0.02wt %, 0.5wt% and 2wt% vanadium as the alloying elements. Vanadium alloyed grey cast iron samples were produced by using Y - block CO2sand casting process and poured into double cylinder mould. The corrosion behavior was measured from polarization me…
During the last 2-3 years there has been an intensive research on InGaAs quantum well channels [1-4] as a possible alternative to the traditional Si-SiO2FETs. Both Al2O3[1-3] and HfO2[4] are used as gate oxides. The fabricated devices with available current-voltage characteristics in the literature are of long gates.…
Organic Light Emitting Diodes (OLED) are made from multilayer organic polymers and electrodes that can produce light. However, OLEDs are required to be protected from oxygen, moisture by encapsulation or seal, generally using a metal cap. The metal cap is heavier, larger and expensive. On the other hand, Plasma Assist…
In recent years, ZnO has received great attention for optoelectronic applications (UV LEDs and LDs) because of its splendor properties such as high excitonic binding energy, high optical gain, and high radiation & temperature stability. In order to develop these ZnO based optoelectronic devices, the first step is the…
Graphene, a recently discovered form of carbon, has received much attention for possible applications in nanoelectronics, due to its excellent carrier transport properties [1]. Graphene nanoribbons (GNRs) are thin strips of graphene, where the electronic properties depend on the chirality of the edge and the width of…
Phase-change memory (PCM) stores information based on the PC material's property to reversibly switch between two resistance states by Joule heating with applied currents [1], and provides a new set of features combining features of the DRAM and the Flash memory. PCM on thin-film-transistor (TFT) technology can potent…