Title :
Micro-calorimetric sensor for vapour phase explosive detection with optimized heat profile
Author :
Greve, A. ; Olsen, J.K. ; Boisen, A. ; Privorotskaya, N. ; King, W.P. ; Senesac, L. ; Thundat, T.
Author_Institution :
Dept. of Micro- & Nanotechnol., Tech. Univ. of Denmark, Lyngby, Denmark
Abstract :
A heater design, used in a micro-calorimetric sensor, has been optimized for temperature uniformity and the sensor has been used for detection of trace amounts of explosives. In this abstract the design, characterization and functionality is described. The performance of the novel heater design is characterized by measuring the temperature coefficient of resistivity (TCR) values and by mapping the temperature distribution using Raman spectroscopy. The new heater design has increased the temperature uniformity and calorimetric measurements on DNT (2,4-Dinitrotoluene) show more reproducible and better defined signals.
Keywords :
Raman spectroscopy; calorimeters; microsensors; Raman spectroscopy; calorimetric measurements; heat profile optimization; heater design; microcalorimetric sensor; temperature coefficient of resistivity; temperature uniformity; vapour phase explosive detection; Conductivity; Design optimization; Explosives; Phase detection; Raman scattering; Sensor phenomena and characterization; Temperature distribution; Temperature measurement; Temperature sensors; Thermal sensors;
Conference_Titel :
Sensors, 2009 IEEE
Conference_Location :
Christchurch
Print_ISBN :
978-1-4244-4548-6
Electronic_ISBN :
1930-0395
DOI :
10.1109/ICSENS.2009.5398551
