Browsing International Journal of Nanoelectronics and Materials (IJNeaM) by Issue Date
Now showing items 41-60 of 527
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Linear and nonlinear optical susceptibilities in some ferroelectrics: Ab-initio calculation
(Universiti Malaysia Perlis, 2010)We present a first principles calculations of the second-order optical response functions as well as the dielectrics function for ABO3 (A=K, Li, Ba; B=Ti, Ta, Nb) and A5B6C7 (A=Sb; B=S, Se; C=I, Br) ferroelectrics. Specially, ... -
Negative differential resistance in nickel doped nano-carbon structures based on pyrogallol-formaldehyde xerogel
(Universiti Malaysia Perlis, 2010)Nickel doped nano-carbon structures have been synthesized by sol-gel method. In our approach the xerogel formation was activated by picric acid as catalyst and electric properties were explored by changing the pyrolysis ... -
Photocatalytic and optical properties of vanadium doped zinc oxide nanoparticles
(Universiti Malaysia Perlis, 2010)Vanadium-doped zinc oxide nanoparticles have been synthesized by sol-gel method using a supercritical drying in ethyl alcohol at 250ºC after heating under natural atmosphere at 500 ºC for 2 hours, the obtained nanopowder ... -
Nanomaterials for hydrogen storage: renewable and clean energy
(Universiti Malaysia Perlis, 2010)In recent years, the search of renewable and clean energy attracted great attractions from politicians as well as scientists, due to several factors including global warming, health problems and oil prices. Hydrogen is ... -
Simulation model of multi-junction InxGa1-xN solar cells
(Universiti Malaysia Perlis, 2010)In this model we investigate theoretically the characteristics of multi junction InxGa1-xN series-connected solar cells under air mass 1.5 global irradiance spectrum using Matlab program. The doping levels of p-type and ... -
Defect structure and properties of Mg- Doped La Cr O3-𝛿
(Universiti Malaysia Perlis, 2010)A defect chemical model for the behaviour of acceptor-doped LaCrO3 as a function of oxygen pressure is proposed. This is considered within the the regime that corresponds to oxygen deficit oxygen. The mathematical approach ... -
Effect of magnetic field and boron addition on the structural and magnetic properties of the rapidly solidified Fe₆₀Nd₃₅Al₅ master alloys magnet by suction casting
(Universiti Malaysia Perlis, 2010)Ingots with nominal composition (Nd₀.₆₀Fe₀.₃₅Al₀.₀₅)100-x Bx with x=2 were produced by arc-melting of elemental Nd, Al, B and Fe-B alloy with the purity of 99.9% under argon atmosphere. Specimen (dimension: 35×10×10 mm3) ... -
Study of the structural, morphological and electric characteristics of TiO₂ nano-powders
(Universiti Malaysia Perlis, 2010)Titania (TiO₂) has been widely studied because of its unique optical and chemical properties in catalysis, photocatalysis and nonlinear optics. This material crystallizes mainly in anatase or rutile phase and exhibits ... -
Magnetic and electrical behaviour of La₀.₆₇Ba₀.₃₃Mn₁-ₓFexₒ₃ perovskites
(Universiti Malaysia Perlis, 2010)We have investigated the effect of Fe 3+ substitution on electrical and magnetic properties of La₀.₆₇Ba₀.₃₃Mn₁-ₓFexₒ₃ (0 ≤ x ≤ 0.2) manganese perovskites. Polycrystalline samples were prepared by the conventional ceramic ... -
Investigation on the influence of substitute groups in organic nanodevices
(Universiti Malaysia Perlis, 2010)Theoretical investigation has been performed on the electron transport properties of phenyl based molecules, sandwich between two gold electrodes with symmentric contact. We analysed the influence of the substitute groups ... -
Fabrication of nano and micrometer structures using electron beam and optical mixed lithography process
(Universiti Malaysia Perlis, 2011)In this paper, the fabricated pattern of nanometer and micrometer structures created with electron beam lithography (EBL) and optical lithography on silicon on insulator (SOI) material are presented. The resist used to ... -
Process control of reactive magnetron sputtering of thin films of zirconium dioxides
(Universiti Malaysia Perlis, 2011)Thin films of zirconium dioxides were deposited on room temperature glass substrates using emission from the dc magnetron sputtering plasma glow discharge as a process control for the reactive process inside the deposition ... -
The effect of Pb content and annealing temperature on the electrical properties of PbₓS₁-ₓ films
(Universiti Malaysia Perlis, 2011)A polycrystalline lead sulfide PbₓS₁-ₓ alloys with various Pb content (x=0.50, 0.51, 0.52, 0.54, and 0.55) has been prepared successfully. PbₓS₁-ₓ films of thickness 1.5 μm have been deposited onto glass and n-Si subtrates ... -
Design and fabrication of quantum dot single electron transistor structure using e-beam nanolithography
(Universiti Malaysia Perlis, 2011)Quantum dot single electron transistor (QD SET) is fabricated using e-beam nanolithography (EBL) and is continued with the combination process of pattern dependent oxidation (PADOX) and high density plasma etching. EBL was ... -
Quantum transport through molecular assemblies
(Universiti Malaysia Perlis, 2011)We utilize the T=0 transport theory for resistivity R (α G-1 where G is the conductance), for molecular assemblies connected to metallic leads. Following the early work of Rousseau et al., which gave G-1 as a force-force ... -
Structural, electrical and optical properties of N-(p-dimethylaminobenzylidene)-p-nitroaniline thin films
(Universiti Malaysia Perlis, 2011)Structural, direct current (DC) electrical and optical properties of thermally evaporated N-(p-dimethylaminobenzylidene)-p-nitroaniline (DBN) thin films have been studied. The crystal structure of DBN in both powder and ... -
Gate oxice leakage in poly-depleted nanoscale-MOSFET: a quantum mechanical study
(Universiti Malaysia Perlis, 2011)In this paper, we investigate the effect of depletion and doping variation in the poly-silicon on the direct tunneling current of an ultra thin oxide n-MOSFET. The one dimension (1-D) poly silicon depletion effect has been ... -
The effect of Pb concentration and annealing temperatures on optical properties of PbₓS₁-ₓ films
(Universiti Malaysia Perlis, 2011)A polycrystalline lead sulfide PbxS1-x alloys with various Pb concentration (x=0.50, 0.51, 0.52, 0.54 and 0.55) has been prepared successfully. PbₓS₁-ₓ films of thickness 1.5 μm have been deposited on n-Si substrates by ... -
Wake potential and induced forces for protons in solids
(Universiti Malaysia Perlis, 2011)The wake potential associated with the passage of swift protons through a solid material using cylindrical coordinates is studied. Full results of the wake potential as a function of space when a proton moves parallel with ... -
Effects of target density on structure and properties of sputtered indium tin oxide films
(Universiti Malaysia Perlis, 2011)Indium Tin Oxide (ITO) thin films were deposited from various target densities (98.7%~99.6%) using RF magnetron sputtering. Effect of the sputtering target densities on the structural, electrical and optical properties of ...