Transparent and Flexible Thermal Insulation Window Material

Summary: Transparent windows that insulate against infrared light and heat entering buildings hold the promise of reducing energy consumption. However, a long-standing challenge for energy-saving window materials is to concurrently achieve a large tuning of refractive index, broad transmission modul...

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Main Authors:	Feng Hu, Lu An, Changning Li, Jun Liu, Guibin Ma, Yong Hu, Yulong Huang, Yuzi Liu, Thomas Thundat, Shenqiang Ren
Format:	Article
Language:	English
Published:	Elsevier 2020-08-01
Series:	Cell Reports Physical Science
Subjects:	thermal insulation visible transparency nanocomposite sheet candle soot hollow silica
Online Access:	http://www.sciencedirect.com/science/article/pii/S2666386420301442

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spelling	doaj-b21fa87e6b8e4812a8952192d5e94bf02020-11-25T03:56:59ZengElsevierCell Reports Physical Science2666-38642020-08-0118100140Transparent and Flexible Thermal Insulation Window MaterialFeng Hu0Lu An1Changning Li2Jun Liu3Guibin Ma4Yong Hu5Yulong Huang6Yuzi Liu7Thomas Thundat8Shenqiang Ren9Department of Mechanical and Aerospace Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USADepartment of Mechanical and Aerospace Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USADepartment of Mechanical and Aerospace Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USADepartment of Chemical and Biochemical Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USADepartment of Chemical and Biochemical Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USADepartment of Mechanical and Aerospace Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USADepartment of Mechanical and Aerospace Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USACenter for Nanoscale Materials, Argonne National Laboratory, Lemont, IL 60439, USADepartment of Chemical and Biochemical Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA; Research and Education in Energy, Environment, & Water Institute, University at Buffalo, The State University of New York, Buffalo, NY 14260, USADepartment of Mechanical and Aerospace Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA; Research and Education in Energy, Environment, & Water Institute, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA; Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA; Corresponding authorSummary: Transparent windows that insulate against infrared light and heat entering buildings hold the promise of reducing energy consumption. However, a long-standing challenge for energy-saving window materials is to concurrently achieve a large tuning of refractive index, broad transmission modulation, and near-room-temperature phase transition. Here, we report the insulation of heat and infrared radiation by using a functionally graded transparent nanocomposite consisting of a hollow network-nanoparticle hybrid. We demonstrate ΔT of 6.9°C by combining the light-reflectance properties of metallic nanoparticles and the thermal insulation of hollow shell networks, resulting in an equivalent cooling power of 396 W/m2 under a light intensity of 3 W/cm2. This flexible nanocomposite sheet shows a high transparency of 91.0%, low haze in the visible region, and a modulus of 160 MPa. The gradient nanocomposites combine UV light blocking, visible transparency, and infrared light shielding, potentially opening a new avenue for energy-saving building window applications.http://www.sciencedirect.com/science/article/pii/S2666386420301442thermal insulationvisible transparencynanocomposite sheetcandle soothollow silica
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Feng Hu Lu An Changning Li Jun Liu Guibin Ma Yong Hu Yulong Huang Yuzi Liu Thomas Thundat Shenqiang Ren
spellingShingle	Feng Hu Lu An Changning Li Jun Liu Guibin Ma Yong Hu Yulong Huang Yuzi Liu Thomas Thundat Shenqiang Ren Transparent and Flexible Thermal Insulation Window Material Cell Reports Physical Science thermal insulation visible transparency nanocomposite sheet candle soot hollow silica
author_facet	Feng Hu Lu An Changning Li Jun Liu Guibin Ma Yong Hu Yulong Huang Yuzi Liu Thomas Thundat Shenqiang Ren
author_sort	Feng Hu
title	Transparent and Flexible Thermal Insulation Window Material
title_short	Transparent and Flexible Thermal Insulation Window Material
title_full	Transparent and Flexible Thermal Insulation Window Material
title_fullStr	Transparent and Flexible Thermal Insulation Window Material
title_full_unstemmed	Transparent and Flexible Thermal Insulation Window Material
title_sort	transparent and flexible thermal insulation window material
publisher	Elsevier
series	Cell Reports Physical Science
issn	2666-3864
publishDate	2020-08-01
description	Summary: Transparent windows that insulate against infrared light and heat entering buildings hold the promise of reducing energy consumption. However, a long-standing challenge for energy-saving window materials is to concurrently achieve a large tuning of refractive index, broad transmission modulation, and near-room-temperature phase transition. Here, we report the insulation of heat and infrared radiation by using a functionally graded transparent nanocomposite consisting of a hollow network-nanoparticle hybrid. We demonstrate ΔT of 6.9°C by combining the light-reflectance properties of metallic nanoparticles and the thermal insulation of hollow shell networks, resulting in an equivalent cooling power of 396 W/m2 under a light intensity of 3 W/cm2. This flexible nanocomposite sheet shows a high transparency of 91.0%, low haze in the visible region, and a modulus of 160 MPa. The gradient nanocomposites combine UV light blocking, visible transparency, and infrared light shielding, potentially opening a new avenue for energy-saving building window applications.
topic	thermal insulation visible transparency nanocomposite sheet candle soot hollow silica
url	http://www.sciencedirect.com/science/article/pii/S2666386420301442
work_keys_str_mv	AT fenghu transparentandflexiblethermalinsulationwindowmaterial AT luan transparentandflexiblethermalinsulationwindowmaterial AT changningli transparentandflexiblethermalinsulationwindowmaterial AT junliu transparentandflexiblethermalinsulationwindowmaterial AT guibinma transparentandflexiblethermalinsulationwindowmaterial AT yonghu transparentandflexiblethermalinsulationwindowmaterial AT yulonghuang transparentandflexiblethermalinsulationwindowmaterial AT yuziliu transparentandflexiblethermalinsulationwindowmaterial AT thomasthundat transparentandflexiblethermalinsulationwindowmaterial AT shenqiangren transparentandflexiblethermalinsulationwindowmaterial
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Transparent and Flexible Thermal Insulation Window Material

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