作者: Steven L. Nail , Lih‐Min Her , Christopher P. B. Proffitt , Lisa L. Nail
关键词: Microscope 、 Eutectic system 、 Video microscopy 、 Heat sink 、 Thermodynamics 、 Thermoelectric effect 、 Freeze-drying 、 Stage (hydrology) 、 Thermoelectric cooling 、 Composite material 、 Chemistry
摘要: A microscope stage for observation of freezing and freeze drying is described. The uses thermoelectric (Peltier) heaters configured in two stages, with circulating fluid as a heat sink on the high temperature side. Lowest attainable sample about −47°C. Principal advantages this system are closed-loop control temperature, rapid response to changes set point, improved documentation experiments by use video recorder character generator which allows display identity temperature. Accuracy measuring field view was validated comparing observed values eutectic melting published series solutes temperatures range from −2°C −32°C. Good agreement obtained throughout range.