Title :
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
fDate :
10/1/2001 12:00:00 AM
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;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
