Journal
JOURNAL OF MICROMECHANICS AND MICROENGINEERING
Volume 19, Issue 7, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0960-1317/19/7/074022
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The spectral resolution of a MEMS-based IR microspectrometer critically depends on the thermal cross-talk between adjacent TE elements in the detector array. Thermal isolation between elements is realized by using bulk micromachining directly following CMOS processing. This paper reports on the characterization results of bridge-shaped TE detector elements that are cut out of a membrane. Elements with dimensions of 650 x 36 mu m(2) are separated by 10 mu m wide gaps in order to minimize the thermal cross-talk by heat conduction through the support structure. The static and dynamic aspects of thermal cross-talk have been evaluated with an emphasis on the effect of the thermal conductivity of air as a function of the package pressure.
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