ultraclean, integrated processing of thermal oxide structures

ultraclean, integrated metal-oxide-semiconductor oxide fabrication has been investigated for the first time by combining (i) surface cleaning in inert ambient, (ii) wafer transfer through ultrahigh vacuum, and (iii) thermal oxidation in an ultrahigh vacuum-based reactor. device quality oxide structures are obtained (evidenced by dielectri..

study of surface passivation of inp

the effects of various surface preparation procedures, including chemical treatments in hf, hno/sub 3/, o-h/sub 3/po/sub 4/ and h/sub 2/so/sub 4/ solutions and anodic oxidation, on the passivating properties of inp were investigated in order to optimize the fabrication procedures of n/sup +/p or p/sup +/n inp solar cells made by thermal d..

measurement of the surface of textiles during microwave drying using a thermographic phosphor

surface temperature measurements of textile materials during exposure to microwave energy are nearly impossible to obtain using conventional temperature measurement methods. wool fabric surface temperatures were obtained using laser-induced fluorescence of the thermographic phosphor, europium-doped lanthanum oxysulfide (la/sub 2/o/sub 2/s..

effect of thermochemical treatments on the strength and microstructure of sic fibres

the room-temperature strength of commercially available polymer-derived sic fibres degrades during the typical high-temperature thermal cycle used in ceramic matrix composite fabrication. substantial improvements in retained room-temperature strength for two different commercially available fibres were observed after annealing in carbon p..

optical-guiding properties of polyurethane coatings based on polyester polyol

the authors studied the optical waveguiding properties of polyurethane coatings based on polyester polyol and isocyanate fabricated by dip coating. a large number of optical waveguides of different thicknesses were fabricated using the two-component polymers. variations of the transverse electric mode, surface index and profile uniformity..

study of the interface properties of cuinse/sub 2/ single-crystal heterojunctions and schottky barriers

high resolution photoluminescence measurements performed at different excitation powers and different temperatures (7.8-90 k) were used to identify the origin and location of the various defect levels in single-crystal cuinse/sub 2/. extrinsic radiative recombination surface states resulting from surface and heat treatments during the dev..

annealing of polystyrene microcapsules for inertial confinement fusion experiments

an underwater-annealing technique has been developed to recover the original strength of fragile polystyrene (ps) microcapsules fabricated by an emulsion technique. ps microcapsules are heated up to 120 degrees c in a pressurized chamber prior to the dehydration process. this is done to recover the strength required for the pressure diffe..

coating of sic by reaction with metal powders

fibers and plates of sic were treated in cr and v powders at 1273-1543 k. as a result, continuous coatings were formed on the sic surface. microstructural analysis employing sem with eds, xrd and aes showed that the coatings had a layered structure, the surface layer always being the metal carbide. the coatings may serve as diffusion barr..

effects of surface pre-treatment and hydrogen on ale of znse on gaas in mombe

although ale growth of znse has been reported by means of rheed observation in mbe, there has been no report on the growth mechanism of mee or ale grown znse in mombe using dmz and dmse as source materials. in mombe, since alkyl radicals are decomposed from mo sources, it is likely that alkyls adsorbed on the surface strongly affect both ..

study on the effect of the surface treatment on the residual stress gradient in silicon carbide (sic) reinforced aluminum metal matrix composites

discusses a study on measuring residual stress on mmc components by the incremental hole-drilling and x-ray diffraction methods. the modified hole-drilling method is used for measuring the macroscopic residual stress gradient in depth, and the x-ray method is used for measuring surface residual stresses. new developments have shown that t..