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单词 Supercritical drying
释义

Supercritical drying

英语百科

Supercritical drying

Supercritical drying (red arrow) goes beyond the critical point of the working fluid in order to avoid the direct liquid–gas transition seen in ordinary drying (green arrow) or the two phase changes in freeze-drying (blue arrow).
Phase diagram showing the supercritical region (light blue) of carbon dioxide.

Supercritical drying is a process to remove liquid in a precise and controlled way. It is useful in the production of microelectromechanical systems (MEMS), the drying of spices, the production of aerogel, the decaffeination of coffee and in the preparation of biological specimens for scanning electron microscopy.

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