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Stacked structures of self-assembled In0.5Ga0.5As/GaAs quantum dots (QDs) have been grown using Metal-Organic Chemical Vapor Deposition (MOCVD) with different number of stacks. High Resolution X-Ray Diffraction (HR-XRD) and Transmission Electron Microscope (TEM) characterization revealed that the formation of stacked self-assembled In0.5Ga0.5As QDs on GaAs (100) substrates were misaligned vertically...
In this paper, we prepared the magnetite nanoparticles coated with polyethlenimine, (CH2-CH2-NH)n with the coprecipitation method. X-ray diffraction (XRD) and Transmission Electron Microscope (TEM) methods were used to analyze their phase and size; The groups adhered on the surface were observed by Fourier transform infrared spectroscopy(FTIR); adsorption rate of the PEI was got by thermogravimetric...
A series of the polyimide-silica NLO nanohybrid materials were synthesized from 3,3', 4,4'- Bisphenyltetracarboxylic (BPDA), 2,2-Bis(3-amino-4-hydroxyphen-yl) hexafluoropropane (6FHP), nonlinear optical (NLO) molecule 4-(N-2-Hydroxyethyl-N-methylamino)-4'-[(6-nitroben-zothiazol-2-yl)-diazenyl] azobenzene (HNBDA), coupling agent APTES and hydrolysate of TEOS via sol-gel process. The TEOS contents in...
Fe3O4 nanoparticles can be prepared by chemical co-precipitation. By using them in artificial muscle, it can be droved by magnetic field. Characterization was also performed by X-ray Diffraction (XRD), Transmission Electron Microscope (TEM) and Vibration Showpiece Magnetor (VSM). Fe3O4 is dispersed in polyvinyl alcohol (PVA) hydrogel to make new type intelligent hydrogel - magnetic field sensitive...
A simple approach for coating carbon nanotubes (CNTs) with silver nanoparticles was developed in this work, aiming to enhance the electrical conductivity of CNTs. To coat Ag nanoparticles on CNTs (Ag@CNTs) effectively, CNTs were treated using ball milling with addition of ammonium bicarbonate, followed by reduction of silver ions in N,N- dimethylformamide (DMF). Transmission electron microscope (TEM),...
Summary form only given. In the present investigation we have used plasma focus, as a thin film deposition source, in two different ways: (a) in a conventional way, by replacing the usually used copper anode with a FeCo fitted anode and then depositing the ablated FeCo plasma, the one ablated by the hot plasma and energetic electron beam, on Si substrate placed up the anode axis, the distance between...
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