کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
750647 1462078 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of emissivity tailoring on radiative membranes thermal behavior for gas sensing applications
ترجمه فارسی عنوان
تاثیر خمش سازندگی بر رفتار گرمایی غشاء رادیویی برای کاربردهای سنجش گاز
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی

Suspended micro-hotplates acting as infrared emitting sources are privileged energy-efficient sources for intended use in optical gas sensors. For such sources, the main constraints are the maximum operating temperature and the battery-limited available energy per measurement. Using simulations that take into account the dynamics of heating through the spatio-temporal radial profile, we first demonstrate how to design a thermally efficient membrane complying with these specifications. Once nonspecific thermal leaks are minimized, we show a further increase of the wall-plug efficiency by tailoring the membrane spectral emissivity with a metasurface in order to match the absorption spectrum of a gas of interest, e.g. CO2 in this study. We consider the effects of an array of plasmonic resonators on the overall efficiency, and show non-trivial favorable effects on the thermal balance of the system.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 213, 5 July 2015, Pages 53–58
نویسندگان
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