کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
673415 1459503 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
T-type Raman spectroscopy method for determining laser absorption, thermal conductivity and air heat transfer coefficient of micro/nano fibers
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
T-type Raman spectroscopy method for determining laser absorption, thermal conductivity and air heat transfer coefficient of micro/nano fibers
چکیده انگلیسی


• We develop a non-contact method to measure micro/nano fibers’ thermal properties.
• We realize combined measurement of three properties using one sample.
• Laser absorption is accurately determined by the nanosensor temperature rise.
• Thermal contact resistance is easily eliminated by moving the laser spot.
• The air heat transfer coefficient is determined with high sensitivity and accuracy.

The accurate thermal property characterization of micro/nano fibers is crucial for precise micro/nano technology. We developed a non-contact T-type Raman spectroscopy method for combined determination of micro/nano fibers’ laser absorption, thermal conductivity and air heat transfer coefficient. The accuracy of laser absorption measurement is independent of the fiber properties or thermal contact resistance. When determining the thermal conductivity, the thermal contact resistance can be easily eliminated. Moreover, the air heat transfer coefficient is determined based on the accurate laser absorption and thermal conductivity data of the same sample. Case studies show that this method is sensitive and accurate for micro/nano fiber characterization.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thermochimica Acta - Volume 581, 10 April 2014, Pages 26–31
نویسندگان
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