932 resultados para clean room
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Digital Image
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Postwar Version of F 39343
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The family has been curious about the family tree on the wall. Family lore suggests that it was produced by French POWs during WWI
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"Drucksaal 1"
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"Umdruckerei"
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"Pragesaal"
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A simple and efficient method for spontaneous organization of long assemblies of gold nanoparticles is described. This is achieved in a molten solvent containing acetamide, urea and ammonium nitrate that acts as a solvent cum stabilizer. There is no external aggregating agent or stabilizing agent added to the system. Depending on the concentration of the metal salt in the ternary melt, either chain-like assemblies or individual nanoparticles could be obtained. The amine groups present in the components of the melt (acetamide and urea) help in the stabilization of nanoparticles. Ammonium ions present in the eutectic mixture are likely to assist in the organization of the particles. The method is simple, highly reproducible and does not require any templating agent for the formation of chain-like assemblies.
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Digital Image
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Digital Image
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Digital Image
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Digital Image