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Flexible Transparent Heat Mirror for Thermal Applications
Shimin Li1,2, Qianqian Xu1,2, Ziji Zhou1,2
1State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China.
Nanomaterials (Basel, Switzerland)
|December 16, 2020
Summary
Researchers developed a flexible Polyethylene terephthalate/Ag-doped Indium tin oxide/Polydimethylsiloxane (PAIP) thin film. This transparent heat mirror demonstrates significant temperature increases for energy harvesting applications.
Area of Science:
- Materials Science
- Nanotechnology
- Energy Science
Background:
- Transparent heat mirrors are crucial for energy-saving applications like solar thermal energy.
- Developing flexible and efficient materials is key to advancing these technologies.
Purpose of the Study:
- To present a novel flexible Polyethylene terephthalate/Ag-doped Indium tin oxide/Polydimethylsiloxane (PAIP) thin film.
- To evaluate its performance as a transparent heat mirror for thermal energy harvesting.
Main Methods:
- Fabrication of a flexible PAIP thin film.
- Experimental testing under solar radiation and ambient conditions.
- Measurement of temperature increase and comparison with control samples.
Main Results:
- The PAIP thin film exhibits high visible transmittance and low thermal infrared emissivity.
- Under solar radiation, the film reached 108 °C, outperforming a blackbody control by ~23 °C.
- The film showed a ~6 °C temperature increase over ordinary fabric without solar radiation.
Conclusions:
- The flexible PAIP thin film is a promising transparent heat mirror.
- Its properties suggest significant potential for practical applications in thermal energy harvesting and manipulation.
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