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http://dx.doi.org/10.3795/KSME-B.2011.35.11.1133

Fabrication of a Micro-thermoelectric Probe  

Chang, Won-Seok (Dept. Nano Mechanics, Korea Institute of Machinery and Materials)
Choi, Tae-Youl (Dept. Mechanical and Energy Eng., Univ. North Texas)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.35, no.11, 2011 , pp. 1133-1137 More about this Journal
Abstract
A novel technique for the fabrication of a glass micropipette-based thermal sensor was developed utilizing inexpensive thermocouple materials. Thermal fluctuation with a resolution of ${\pm}0.002$ K was measured using the fabricated thermal probe. The sensors comprise unleaded low-melting point solder alloy (Sn) as a core metal inside a borosilicate glass pipette coated with a thin film of Ni, creating a thermocouple junction at the tip. The sensor was calibrated using a thermally insulated calibration chamber, the temperature of which can be controlled with a precision of ${\pm}0.1$ K and the thermoelectric power (Seebeck coefficient) of the sensor was recorded from 8.46 to $8.86{\mu}V$/K. The sensor we have produced is both cost-effective and reliable for thermal conductivity measurements of micro-electromechanical systems (MEMS) and biological temperature sensing at the micron level.
Keywords
Micro Pipette; Temperature Sensor; Seebeck Coefficient; Micro/Nano Device;
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