The basics and issues of Thermochromic Liquid Crystal Calibrations
Thermochromic Liquid Crystals (TLCs) have been widely used by researchers in heat transfer and fluid flow communities as a thermal imaging tool for mapping surface and spatial temperature distributions. In order to utilize TLCs for quantitative temperature measurements, calibration is first necessar...
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| Veröffentlicht in: | Experimental thermal and fluid science 2010-11, Vol.34 (8), p.1089-1121 |
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| creator | Abdullah, Nadia Abu Talib, Abd. Rahim Jaafar, Abdul Aziz Mohd Salleh, Mohamad Amran Chong, Wen Tong |
| description | Thermochromic Liquid Crystals (TLCs) have been widely used by researchers in heat transfer and fluid flow communities as a thermal imaging tool for mapping surface and spatial temperature distributions. In order to utilize TLCs for quantitative temperature measurements, calibration is first necessary to determine the colour–temperature relationship of TLCs. This paper is aimed to provide novice and intermediate users of TLCs with a review on the basics and issues pertaining to calibrations of TLCs, particularly for surface thermography. A general overview of TLCs, the basic elements of a TLC calibration rig, and the common calibration methods of TLCs are described. The crucial issues associated with calibrations of TLCs, namely, imaging, colourimetry, illumination, hysteresis, film thickness and aging, and the methods used to compensate for these effects are discussed. This paper is intended to provide useful information to novice and intermediate users of TLCs, particularly on TLC calibrations. |
| doi_str_mv | 10.1016/j.expthermflusci.2010.03.011 |
| format | Article |
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The crucial issues associated with calibrations of TLCs, namely, imaging, colourimetry, illumination, hysteresis, film thickness and aging, and the methods used to compensate for these effects are discussed. 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| subjects | Calibration Colour space Exact sciences and technology Fluid dynamics Fluid flow Fluids Heat transfer Illumination Imaging Instruments, apparatus, components and techniques common to several branches of physics and astronomy Liquid Crystal Thermography Liquid crystals Physics Thermal instruments, apparatus and techniques Thermochromic Liquid Crystals Thermometry |
| title | The basics and issues of Thermochromic Liquid Crystal Calibrations |
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