Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Fabrication and Performance Investigation of Surface Temperature Sensor Using Fluorescent Nanoporous Thin Film II

형광 나노 포러스 박막을 이용한 표면 온도 센서의 제작 및 성능 연구 II

  • Kim, Hyun Jung (Department of Mechanical Engineering, Ajou University) ;
  • Yoo, Jaisuk (Department of Mechanical Engineering, Ajou University) ;
  • Park, Jinil (Department of Mechanical Engineering, Ajou University)
  • Received : 2013.10.18
  • Published : 2013.12.10
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Abstract

We present a non-invasive technique to the measure temperature distribution in nano-sized porous thin films by means of the two-color laser-induced fluorescence (2-LIF) of rhodamine B. The fluorescence induced by the green line of a mercury lamp with the makeup of optical filters was measured on two separate color bands. They can be selected for their strong difference in the temperature sensitivity of the fluorescence quantum yield. This technique allows for absolute temperature measurements by determining the relative intensities on two adequate spectral bands of the same dye. To measure temperature fields, Silica (SiO2) nanoporous structure with 1-um thickness was constructed on a cover glass, and fluorescent dye was absorbed into these porous thin films. The calibration curves of the fluorescence intensity versus temperature were measured in a temperature range of $10-60^{\circ}C$, and visualization and measurement of the temperature field were performed by taking the intensity distributions from the specimen for the temperature field.

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References

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