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Erschienen in:
2015 | OriginalPaper | Buchkapitel
3. Temperature and Humidity Control
verfasst von : Ahmad Soueid, E. Clayton Teague, James Murday
Erschienen in: Buildings for Advanced Technology
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Abstract
The instruments to manipulate atoms or observe their motions require stricter environmental specifications than prior generations of equipment. The primary focus of this chapter is temperature and humidity control, two of the most critical variables that affect work at the nanometer scale. In basic science laboratories, environmental control to an accuracy of ±0.5 to 0.25 °C and ±5 to 10 % relative humidity (RH) is adequate. For atomic-scale measurements, a much more highly controlled environment is required. Because test equipment is extremely sensitive to temperature and humidity variations, ±0.1 to 0.01 °C and as close to ±1 % RH as possible is needed. The preferred standard air condition for nanoscale research is 20 °C at 40–45 % RH. This chapter addresses the various design tradeoffs and control systems needed to accomplish these standards.