کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
675068 1459592 2009 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhanced accuracy in a silicon-nitride-membrane-based microcalorimeter with variation of lateral layout
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Enhanced accuracy in a silicon-nitride-membrane-based microcalorimeter with variation of lateral layout
چکیده انگلیسی

We report the effect of lateral designs and resultant parasitic thermal conductance on the absolute accuracy of microcalorimeters based on a silicon-nitride membrane. Thermal properties are quantified by the curve fitting scheme based on the thermal relaxation method with two thermal decay times. In the studies of various microcalorimeter layouts, the temperature dependence of errors in the absolute values of heat capacity was found to be approximately proportional to that of the thermal conductance between the isothermal platform and the temperature reservoir. Decreasing parasitic thermal conductance by modifying the lateral designs for the thermometer and heater allowed for absolute accuracies that were typically less than 5% in a temperature range between 20 and 300 K.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thermochimica Acta - Volume 490, Issues 1–2, 1 June 2009, Pages 1–7
نویسندگان
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