Materials Literature
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Fundamental aspects of sorption of copper ions by a complexite based on an aminohydroxyl-containing grafted copolymer of polycaproamide and poly(glycidyl methacrylate) were studied. The main kinetic and capacity parameters of the sorption process were determined. The possibility of reaching a high degree of recovery o…
Extended abstract of a paper presented at Microscopy and Microanalysis 2012 in Phoenix, Arizona, USA, July 29 – August 2, 2012.
The decay rate of quantum emitters near a layer of Au nanospheres is studied in the framework of a Green's tensor formalism. The localized surface plasmons that can be excited on the gold spheres provide a strong avenue for transporting the energy from the donors to the acceptors. The effect of the layer when compared…
Based on dynamic contact force and FEM, the contact – separation process of collision was investigated. Compared with other methods, the dynamic contact method needn’t modify the general stiffness matrix, and increase any additional iterative computation. So there should be less computation and high efficiency. By bui…
The Silver nanoparticles with chiroptical feature have been prepared via chiral transfer through supramolecular interaction during the photoirradiation of silver salt with the assistance of chiral environment provided by sodium deoxycholate at pH 9.7. The pH value plays a significant role for the formation of opticall…
The conductivity of Bi4Ti3O12(BiT) single crystals was calculated from the dielectric response at subswitching conditions over a wide range of temperatures (20-250 °C) and frequencies (100 mHz to 10 kHz) in-plane and out-of-plane. The calculated activation energy for dc conductivity was approximately the same as the e…
Block copolymers have been used extensively in the synthesis of different types of nanoparticles. A novel ABA type PNIPAAm-b-PU-b-PNIPAAm tri-block nanopolymer has been synthesized via atom transfer radical polymerization (ATRP) technique using a tertiary bromo-terminated as a macro-initiator and was characterized by…
The triode-typed field emission (FE) devices using carbon nanotube (CNT) emitters for the x-ray application were fabricated. For the stability of the device, the leakage current between cathode and gate, and the emission current to the anode electrode should be controlled. We realized that the thickness of insulating…
Extended abstract of a paper presented at Microscopy and Microanalysis 2012 in Phoenix, Arizona, USA, July 29 – August 2, 2012.
Computational materials and materials design combined with computer techniques are very important contents in materials science. The paper used computer simulations and modeling to study the structures and characteristics of functional materials. It used first principle theory or molecular dynamics methods to study th…
In this work, we demonstrate β-Chitosan(βCS) made from the skin of maggot has higher viscosity, better activity and lower heavy metal concentration in comparison with α-Chitosan made from shrimp shell and crab shell. This study is basedon hydroxyapatite(HA) as the matrix. The method of reverse phase suspension cross-l…
Extended abstract of a paper presented at Microscopy and Microanalysis 2012 in Phoenix, Arizona, USA, July 29 – August 2, 2012.
Carbon nanotube (CNT) emitters are utilized for field emission x-ray source. The quality of the x-ray images is the main concern when improving the geometrical parameters involved in the construction of an x-ray source. These geometrical parameters includes among others the gaps between the parts of the field emission…
The probability of electrons penetrating a nonpolar dielectric interface is studied. The lowest probability of potential barrier tunneling is determined in analytical form.
Extended abstract of a paper presented at Microscopy and Microanalysis 2012 in Phoenix, Arizona, USA, July 29 – August 2, 2012.
Extended abstract of a paper presented at Microscopy and Microanalysis 2012 in Phoenix, Arizona, USA, July 29 – August 2, 2012.
By analysing the viscosity of formic acid SF solutions and CaCl2- C2H6O- H2O SF solutions realized the advantages of formic acid SF solutions compared with CaCl2- C2H6O- H2O SF solutions. Studing on the changs of SF structure through the WAXD spectra of original SF and SF powder by drying different concentration formi…
A deep etched 1D Distributed Bragg Reflector (DBR) cavity in GaN-AlN-Sapphire has been analytically modelled and simulated using 2D FDTD. A 3rd-order DBR has also been modelled including dye loaded polymer layer which can be used for emission enhancement characterization. A structure fabricated using a hybrid Electron…
Stereotactic body radiation therapy(SBRT), a technique that uses tightly conformed Megavoltage(MV) x-ray fields, improves local control of lung cancer. However, small MV x-ray fields can cause lateral electron disequilibrium(LED), which reduces the dose within lung. These effects are difficult to predict and are prese…
ZnO Nano-chrysanthemum arrays are both synthesized on silicon nano-needles and in silicon micro-holes with hydrothermal method. A ZnO Nano-chrysanthemum is a bunch of ZnO nanorods reaches out from one root. The influence of the reaction time has been carefully discussed and the Van der Waals force is regarded as the d…