Automated SEM and EDS System to Monitor Instrument Health and Calibration Accuracy for Forensic Science
Extended abstract of a paper presented at Microscopy and Microanalysis 2012 in Phoenix, Arizona, USA, July 29 – August 2, 2012.
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Synthesis of Manganese Oxide Nanocompounds for Electrodes in Electrochemical Capacitors
Nanocrystals of Mn3O4 with different shapes and size under 100 nm were prepared using normal micelles as templates. Modifying the solution conditions allowed the authors to control the particle shape. The key factors to control the nanostructure of particles are the interactions between micelles and Mn+2 ions and the…
Effect of layered aluminosilicates on the barrier properties of butyl rubber
The effect of the type and amount of layered nanofillers (modified bentonites Nanofil 15 as well as new domestic products Nanobent ZR1 and Nanobent ZR2; Table 1.) on the permeation of polar butyl acetate and non-polar cyclohexane through composites of cross-linked butyl rubber (IIR), non-polar special elastomer, was s…
Properties of adhesive compositions based on thiirane
Comparative investigations of adhesive composite materials based on thiirane and its oxirane analog are carried out. It is shown that compositions based on thiirane provide for a high rate of adhesion and cohesion strength gain. It is established that the maximal values of the adhesion strength for thiirane are reache…
Plasmon eignevalues as a function of nano-spheroids size and elongation
In this paper, the effects of silver nano-spheroid size and elongation on plasmon wavelength are investigated, and the plasmon eigenvalues are formulated as a function of the radius and aspect ratio of the nano-particles. These can be used in eigenmode plasmonic interaction method to study interaction of nano-particle…
Effect of Low Temperature Plasma Treatment on Surface Properties of Polyphenylene Sulfide Fiber
The performance of the polyphenylene sulfide fiber (PPS) was investigated by low temperature glow discharge plasma . The experimental results show that under the treatment of different plasma conditions, the PPS fiber surfaces appear the varying degree physics and chemical etching. It’s found that the friction coeffic…
Faraday rotation by artificial electric gyrotropy in a transparent slot-ring metamaterial structure
A non-reciprocal metamaterial structure composed of a 2D periodic array of slot ring resonators including each a semiconductor-based isolator is introduced and experimentally shown to produce Faraday rotation. In contrast to previously reported non-reciprocal metastructures, which were of microstrip type and were limi…
Ozonation of chlorinated natural rubber and development of glues on its basis
A modification of chlorinated natural rubber via the ozonation process has been considered. Optimal regimes of ozonation are determined. It is shown that this modification makes it possible to increase the adhesion strength of vulcanized rubber by 10–40%.
Design of optimum toroid configuration for the 1200KV system solid core bus post insulator
Extra High Voltage and Ultra High Voltage porcelain solid core post insulators for use in up to 1200kV AC systems are being manufactured by various insulator manufacturers in India. One application is to use as bus support insulator in 1200kV substations. The post insulators shall have superior corona free performance…
Properties of mechanically activated bismuth ferrite
Methods of mechanochemical treatment applied to eliminate the disadvantages of BiFeO 3 that impede its practical use are described. It is shown that the use of certain techniques for the mechanical activation of precursors allows us to enhance the structural and thermal stability of bismuth ferrite, to reduce its elec…
Cysteine Interactions in Glutathione Mediated Assembly of Silver Nanoparticles in the Presence of Metal Ions
We Report Herein Results of an Investigation of the Assembly of Silver Nanoparticles Mediated by Glutathione (GSH) and Cysteine (Cys) Interaction in the Presence of Metal Ions: Ag+, Cd2+, Co2+, Cu2+, Fe3+, Hg2+, Ni2+, Pb2+, Zn2+. The Silver Nanoparticles Produce Well-Ordered Structures upon Interaction with Glutathion…
Cylindrical metamaterial lens for single-feed adaptive beamforming
A design is presented for a beam-scanning Transformation Electromagnetics (TE) lens that allows an arbitrary number of beams at controlled magnitudes to be dynamically synthesized from a single omnidirectional source. A cylindrical slab of zero-index magnetic metamaterial controls the radiation pattern by altering the…
Electric Field Analysis of High Voltage Insulators
This paper involves designing and applying electric field analysis on multiple long rod insulators. Quality HV insulators are an integral part of power systems because they separate the Transmission lines carrying high voltages from the grounded poles. They must have the ability to withstand both high electrical and m…
Magnetic, Optical and Structural Property Studies of Mn-Doped ZnO Nanosheets
We report the synthesis of pure and Mn doped ZnO in the form of nanosheets using a simple and single step procedure involving a microwave assisted chemical method. As prepared Mn-doped ZnO nanosheets were characterized using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission ele…
Evolution of the 251 cm −1 infrared phonon mode with temperature in Ba 0.6 K 0.4 Fe 2 As 2
The far-infrared optical reflectivity of an optimally doped Ba 1− x K x Fe 2 As 2 ( x = 0.4) single crystal is measured from room temperature down to 4 K. We study the temperature dependence of the in-plane infrared-active phonon at 251 cm −1 . This phonon exhibits a symmetric line shape in the optical conductivity, s…
On-line monitoring system of insulator leakage current based on ARM
A ceramic insulator has an excellent anti-pollution performance, but sometimes flashover occurs on it and then the outage of power network follows. This paper analyzes the formation mechanism of flashover and the result is that the RMS of leakage current(LC) and discharge pulses reflect the contamination severity appr…
Structure and morphology in thin films of perfluorinated copper phthalocyanine grown on alkali halide surfaces (001)
Thin films from the monolayer range to the thickness of 40 nm of the perfluorinated copper phthalocyanine (F 16 PcCu) were prepared by physical vapor deposition on freshly cleaved (001) faces of the alkali halides NaCl , KCl and KBr . The different lattice constants of the substrates provided sufficient difference to…
Progress of Mesoporous Materials for the Adsorption of Cr(VI) in Wastewater
Cr(VI) has a highly toxic effect on the organism and has caused serious harm to the environment. Due to quantum size effects and interface coupling effects, mesoporous materials have novel physical, chemical and many other excellent performances, especially for the promising application in the adsorption of heavy meta…
Effects and Control of Polymer‐Converted Carbon Impurity in Synthesizing Continuous Boron Nitride Nanofibers by Electrospinning
Application of polymer as thickener of precursor solution for preparing boron nitride ( BN ) nanofibers by electrospinning brings carbon impurity in the nitride products. The control and removal of the carbon impurity are a key step in the synthesis of the BN nanofibers. In this article, the control and removal of the…
Ultrafast submicron thermal characterization of integrated circuits
Static and dynamic hot spots limit the performance and reliability of electronic devices and ICs. We show that transient thermoreflectance imaging using a CCD camera can measure temperature distribution in chips with 0.1°C temperature, 100 nanosecond time, and submicron spatial resolution. It is possible to measure th…