Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/62090
Title: Effect of operating temperature on electrical and thermal properties of microbolometer infrared sensors
Authors: Karunasiri, G. 
Ramakrishna, M.V.S.
Neuzil, P.
Keywords: Heat capacitance
Microbolometer
Temperature dependence
Thermal conductance
Issue Date: 2003
Source: Karunasiri, G.,Ramakrishna, M.V.S.,Neuzil, P. (2003). Effect of operating temperature on electrical and thermal properties of microbolometer infrared sensors. Sensors and Materials 15 (3) : 147-154. ScholarBank@NUS Repository.
Abstract: The electrical and thermal parameters of microbolometer infrared sensors play an important role in determining the ultimate sensitivity of detection. This paper describes in detail the effect of varying the operating temperature (80-300 K) on the thermal and electrical properties of microbolometer infrared detectors using Ti resistive sensor elements. In the experiment, two microbolometers with different thermal conductances were employed. The parameters studied include the temperature coefficient of resistance (TCR), thermal conductance and thermal mass (heat capacitance). The measurements show that the heat capacitance increases linearly with operating temperature while the thermal conductance increases linearly at low temperatures (< 250 K) and then rapidly increases. The rapid increase in thermal conductance at elevated temperatures is mainly due to the radiated heat loss which may limit the performance of microbolometer sensors at high ambient temperatures.
Source Title: Sensors and Materials
URI: http://scholarbank.nus.edu.sg/handle/10635/62090
ISSN: 09144935
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

52
checked on Jan 18, 2018

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.