Micro and Nanosystems - Volume 5, Issue 1, 2013

Iron oxide nanoparticles (NPs) have been prepared in large-scale by wet-chemical method (150.0 oC and pH 8.33) using ferric chloride and urea as a starting materials in aqueous-alkaline medium. The structural, physical, and optical properties are characterized using FT-IR, UV–vis spectroscopy, Raman spectroscopy, powder X-ray diffraction, Fieldemission scanning electron microscopy (FE-SEM), X-ray photoelectron spectroscopy Read More

Quantum chemical calculations have been carried out using Density Functional Theory (DFT) analysis with B3LYP method and Lanl2dz basis set to investigate (ZnO)n nano structures (n = 4–12) with substitution of Iron (Fe) as an impurity. We deeply investigated the effects after the substitution of one Fe atom in place of one Zn atom for each (ZnO)n nano structures. All the structures have been analyzed in detail and the relation Read More

Manganese oxide nano-particles have been synthesized by hydrothermal process using aqueous combination of manganese chloride and urea as starting materials, where ammonium hydroxide is used as a reducing agent to adjust the pH at 10.55. The structural investigation of the as-grown nano-crystalline manganese oxide is analyzed by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), Fourier t Read More

Environmental pollution is one of the global hot issues and need an urgent demand to detect and monitor the pollutants which affect the environment. Ammonia is one of the organic pollutants which cause severe harmful effect on environment due to its toxic nature. Therefore, electrochemical sensor has been fabricated using CeO2 nanoparticles (NPs) as a redox mediator to detect aqueous ammonia for enviro Read More

Non-trivial capacitance behaviour of gallium selenide (ε-GaSe) single crystals has been discussed. The emphasis of our discussion is focussed to the physical mechanism and theoretical interpretation of experimentally observed data. The crystal used for this purpose was grown by vertical Bridgeman technique (VBT). The grown crystal belongs to ε- polytype (ε-GaSe) with hexagonal crystal structure. The functions of ε-GaSe Read More

The Single-walled carbon nanotube (SWCNT) based on 1-Amino-nonenthiol (ANT) was highly organized (nano level) forming an aggregated SWCNT-ANT self-assembled layer (SAL) on gold substrates. The fabricated nanosurfaces were investigated specially using FT-IR, cyclic voltammetry (CV), Raman spectroscopy, electrochemical quartz crystal microbalance (EQCM), and atomic force microscopy (AFM) techniques. The perpen Read More

Environmental friendly and biodegradable nanocomposite (NC) has been developed by efficient intercalation of poly propylene carbonate (PPC) into the interlayer space of cloisite 20B (C-20B) for biomedical and food packaging applications. The physicochemical and structural characterization was studied by X-ray diffraction (XRD) and Fourier transforms infrared spectroscopy. Thermal stability, mechanical property and anti-wat Read More

In the regime of strong quantization single-electron states are considered theoretically in the wide-band semiconductor film, placed in a homogeneous electrostatic field. For a certain range of values of the external field, explicit expressions were obtained for the energy spectrum and envelope wave functions of charge carriers in the film. The dependence of the parameters of direct interband electro-optical transitions Read More

Microelectromechanical Systems (MEMS) technology allows the development of sensors with small size, lightweight, low cost, and high sensitivity. This paper presents the structural and electro-thermal design of a novel magnetic field sensor based on Sandia Ultra-planar Multi-level MEMS Technology V (SUMMTiV) process, which exploits the Lorentz force and operates at atmospheric pressure. The proposed sensor can det Read More