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https://hdl.handle.net/2440/131318
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Type: | Journal article |
Title: | Cross-overlapped flat-silver/hexagonal boron nitride for translucent heat-reflective coatings |
Author: | Nine, M.J. Hee, A.C. Tung, T.T. Hassan, K. Losic, D. |
Citation: | APPLIED MATERIALS TODAY, 2020; 20:1-10 |
Publisher: | Elsevier |
Issue Date: | 2020 |
ISSN: | 2352-9407 2352-9407 |
Statement of Responsibility: | Md J.Nine, Ay Ching Hee,Tran Thanh Tung, Kamrul Hassan, Dusan Losic |
Abstract: | Multifunctional heat-reflective coatings are increasingly in demand for use in energy-efficient buildings and vehicles, as well as for optoelectronic devices. Conventional heat-reflective coatings (e.g. dielectric/metal/dielectric (DMD)) exhibit poor structural flexibility and combine complex fabrication process of multilayered structures, which hinders their scalable production. Herein, a low-cost translucent heat reflective mechanism is presented using single-coat composite film of flat-silver (flat-Ag) and hexagonal boron nitride (hBN) as an alternative to the multilayered DMD structure. The conversion of grey Ag-nanoparticles into shiny flat-Ag results in significant enhancement (~7 times) in infrared (IR) reflection. The dielectric-hBN layers integrated with flat-Ag improves the visible transmittance and heat-dissipating properties of coatings. The flat-Ag/hBN ink sprayed onto a flexible, transparent, and adhesive substrate of polydimethylsiloxane (PDMS) exhibits excellent IR-reflection (~70%) with ~57% visible transmittance. When irradiated by an IR heat source, the film displays 8.9 ± 0.5 °C lower temperature than those of uncoated surfaces, that results in reduction of the interior air-temperature by 5.4 ± 0.5 °C compared to the uncoated control. This newfabrication process of heat-reflective coatings with structural flexibility and optical transparency has great potentials to be used for thermal management in building and transportation sectors. |
Keywords: | Flat-silver; IR-reflective; hexagonal boron nitride; translucent |
Rights: | © 2020 Elsevier Ltd. All rights reserved. |
DOI: | 10.1016/j.apmt.2020.100764 |
Grant ID: | http://purl.org/au-research/grants/arc/IH150100003 |
Published version: | http://dx.doi.org/10.1016/j.apmt.2020.100764 |
Appears in Collections: | ARC Research Hub for Graphene Enabled Industry Transformation publications Aurora harvest 4 Chemical Engineering publications |
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