نتایج جستجو برای: ultra high vacuum
تعداد نتایج: 2129163 فیلتر نتایج به سال:
Ultra High Vacuum Chemical Vapor Deposition (UHVCVD) reactor has been used to grow silicon nanowires via innovative economical approaches using chemical active materials as catalysts such aluminum. Scanning Electron Microscopy study the success of growth for further investigations and advanced applications solar cells. Solar manufacturers are looking improve yield cell efficiency lower manufact...
This paper reports for the first time the luminescent property of polystyrene (PS), produced by pulsed ultra violet laser irradiation. We have discovered that, in air, ultra-violet (UV) irradiated PS nanospheres emit bright white light with the dominant peak at 510 nm, while in vacuum they emit in the near-blue region. From the comparison of PS nanospheres irradiated in vacuum and air, we sugge...
A vacuum system with pressure in the low ultra-high vacuum (UHV) range is essential for long photocathode lifetimes in DC high voltage GaAs photoguns. A discrepancy between predicted and measured base pressure in the CEBAF photoguns motivated this study of outgassing rates of three 304 stainless steel chambers with different pretreatments and pump speed measurements of non-evaporable getter (NE...
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