Journal of the Korean institute of surface engineering (한국표면공학회지)

The Korean Institute of Surface Engineering (한국표면공학회)
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Analysis of suppressed thermal conductivity using multiple nanoparticle layers

다중층 나노구조체를 통한 열차단 특성 제어

  • Tae Ho Noh (Bangmok College of Basic Studies, Myongji University) ;
  • Ee Le Shim (School of Mechanical, Automotive & Robot Engineering, Halla University)
  • 노태호 (명지대학교 방목기초교육대학) ;
  • 심이레 (한라대학교 기계자동차로봇공학부)
  • Received : 2023.06.10
  • Accepted : 2023.08.05
  • Published : 2023.08.31
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Abstract

In recent years, energy-management studies in buildings have proven useful for energy savings. Typically, during heating and cooling, the energy from a given building is lost through its windows. Generally, to block the entry of ultraviolet (UV) and infrared (IR) rays, thin films of deposited metals or metal oxides are used, and the blocking of UV and IR rays by these thin films depends on the materials deposited on them. Therefore, by controlling the thicknesses and densities of the thin films, improving the transmittance of visible light and the blocking of heat rays such as UV and IR may be possible. Such improvements can be realized not only by changing the two-dimensional thin films but also by altering the zero-dimensional (0-D) nanostructures deposited on the films. In this study, 0-D nanoparticles were synthesized using a sol -gel procedure. The synthesized nanoparticles were deposited as deep coatings on polymer and glass substrates. Through spectral analysis in the UV-visible (vis) region, thin-film layers of deposited zinc oxide nanoparticles blocked >95 % of UV rays. For high transmittance in the visible-light region and low transmittance in the IR and UV regions, hybrid multiple layers of silica nanoparticles, zinc oxide particles, and fluorine-doped tin oxide nanoparticles were formed on glass and polymer substrates. Spectrophotometry in the UV-vis-near-IR regions revealed that the substrates prevented heat loss well. The glass and polymer substrates achieved transmittance values of 80 % in the visible-light region, 50 % to 60 % in the IR region, and 90 % in the UV region.

Keywords

Acknowledgement

본 논문은 중소벤처기업부 주요사업 "산학연 CollaboR&D) 사업 (산학협력/사업화R&D, RS-2023-00223707)" 의 지원으로 수행한 연구입니다.

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