A scanning thermocouple probe for temperature mapping

Author

Ho, H.P. ; Lo, K.C. ; Wu, S.Y.

Author_Institution

Dept. of Phys. & Mater. Sci., Univ. of Hong Kong, Kowloon, China

Volume

50

Issue

5

fYear

2001

fDate

10/1/2001 12:00:00 AM

Firstpage

1167

Lastpage

1170

Abstract

A simple thermocouple probe with tip diameter less than 10 μm has been developed for mapping temperature distribution on surfaces. The fabrication procedures of the thermocouple tip involve fixing a fine tungsten wire inside a glass capillary tube and coating the exposed tip with gold. We have successfully used the thermocouple tip to obtain a two-dimensional temperature map on the heatsink of a high-power light-emitting diode (LED), thus demonstrating this device as a low-cost alternative to expensive infrared cameras for near-field thermal imaging

Keywords

gold; heat sinks; light emitting diodes; probes; temperature distribution; temperature measurement; temperature sensors; thermocouples; tungsten; 10 micron; 2D temperature map; Au-W; Au-coated W tip; LED heatsink evaluation; fabrication procedures; fine W wire; glass capillary tube; high-power LED; light-emitting diode; near-field thermal imaging; scanning thermocouple probe; surface temperature distribution; temperature mapping; thermocouple tip; two-dimensional temperature map; Coatings; Fabrication; Glass; Gold; Infrared heating; Light emitting diodes; Probes; Temperature distribution; Tungsten; Wire;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.963178

Filename

963178