InGaP/GaAs HBTs Operate as Light-Emitting Transistor
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very large spin polarization.” In their related work published in Advanced Materials (15, 2003), the researchers showed that proton microbeam makes it possible to create magnetic spots on the graphite with diameters of only a few micrometers. ANDREI A. ELISEEV
CdS Nanoparticles on Si Self-Organize into Luminescent Nanorings Realization of nanometer-sized devices is dependent on the physical properties of nanostructures. A group of researchers from NTT, the Royal Institution of Great Britain, the University of Wales, and Yokohama National University has achieved a self-organization process of cadmium sulfide nanoparticles that results in the formation of luminescent nanometer-sized ring structures on a silicon wafer. As reported in the September 16, 2003, issue of Advanced Materials, nanoparticles of CdS, 10 nm in size, were synthesized by the reaction between cadmium acetate and thioacetamide. This method enables control of the size and shape of the CdS nanoparticles. Planar silicon wafers of (111) orientation with a thin oxide layer (
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