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| Difficulty in accurate temperature measurements of silver heating stage with an IR camera due to unknown emissivity (A) Picture of a typical Linkam THMS600 heating stage. (B) Picture of the silver heating block and 8 positions of surface temperature measurements using a thermocouple. (C) IR thermal image of the stage in (B) at 250°C. The emissivity is set at 0.04. (D) IR thermal image of the silver stage at 400°C after polishing. The emissivity is adjusted to 0.081. Inset: optical image of the silver stage. (E) Surface temperature from the spot (dark cursor near the center in D) measured by the IR camera using an emissivity of 0.081. (F) Adjusted emissivity used to obtain correct surface temperature of the spot. Credit Bao, U Houston / Device journal. |
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