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2 decompose under high temperature conditions, volatility. 3, poor thermal conductivity of the bubble state. organic material in the evaporation thin film deposition, the evaporation rate conol in lusm25?. heated boat with good thermal conductivity, so that the evaporation rate is easy to conol. commonly used in heating molybdenum and tantalum boat heated metal boat, in order to make more even heating, coupled with a covered quartz boat, which allows heating by buffer. films during evaporation of organic materials, generally, to maintain the subsate at room temperature, to prevent the desuction of organic material thin film temperature, evaporation rate should not be too fast or too slow, the film thickness is uneven, too thick. evaporation of a variety of materials were carried out in several vacuum chamber to prevent cross-contamination. neon signs wholesale (http://www.flashingboards.com/)
researchers at the university of st andrews team will act on the photon light source called polyfluorene (polyfluorene) of plastic, the researchers found that, under normal circumstances this effect can lead to laser-produced, can be encountered when tnt polyfluorene (tnt) and other volatile explosives, the laser beam will disappear. st andrews university physicist graham &ammiddot; turnbull is the leader of one of his "advanced functional materials," the magazine wrote that the new laser has the advantage of creating a capable of sensing and tnt explosives similar to the new molecular mechanisms. polyfluorene film even if only to ace and capture the explosive tnt similar molecules will react immediately, so that the laser is no longer issued. business signs (http://www.flashingboards.com/)