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

fYear

2009

fDate

25-28 Oct. 2009

Firstpage

723

Lastpage

726

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Sensors, 2009 IEEE

Conference_Location

Christchurch

ISSN

1930-0395

Print_ISBN

978-1-4244-4548-6

Electronic_ISBN

1930-0395

Type

conf

DOI

10.1109/ICSENS.2009.5398551

Filename

5398551