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KMID : 0381920150450020095
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Korean Journal of Microscopy
2015 Volume.45 No. 2 p.95 ~ p.100
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Temperature Calibration of a Specimen-heating Holder for Transmission Electron Microscopy
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Kim Tae-Hoon
Bae Jee-Hwan
Lee Jae-Wook
Keesam Shin
Lee Joon-Hwan
Kim Mi-Yang
Yang Cheol-Woong
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Abstract
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The in-situ heating transmission electron microscopy experiment allows us to observe the time- and temperature-dependent dynamic processes in nanoscale materials by examining the same specimen. The temperature, which is a major experimental parameter, must be measured accurately during in-situ heating experiments. Therefore, calibrating the thermocouple readout of the heating holder prior to the experiment is essential. The calibration can be performed using reference materials whose phase-transformation (melting, oxidation, reduction, etc.) temperatures are well-established. In this study, the calibration experiment was performed with four reference materials, i.e., pure Sn, Al-95 wt%Zn eutectic alloy, NiO/carbon nanotube composite, and pure Al, and the calibration curve and formula were obtained. The thermocouple readout of the holder used in this study provided a reliable temperature value with a relative error of <4%.
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KEYWORD
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Melting point, Dynamic observation, Annealing, Thermocouple, In-situtransmission electron microscopy
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