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Optical and Thermal Switching of Liquid Crystals for Self‐Shading Windows
Author(s) -
Oh SeungWon,
Kim SangHyeok,
Baek JongMin,
Yoon TaeHoon
Publication year - 2018
Publication title -
advanced sustainable systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.499
H-Index - 24
ISSN - 2366-7486
DOI - 10.1002/adsu.201700164
Subject(s) - shutter , opacity , shading , transmittance , materials science , optics , liquid crystal , optoelectronics , sunlight , thermal , photochromism , visible spectrum , physics , nanotechnology , computer science , meteorology , computer graphics (images)
A liquid crystal light shutter whose transmittance can be controlled by ambient conditions, such as incident solar UV intensity and outdoor temperature, is demonstrated. Self‐shading by optical or thermal switching between transparent and opaque states is achieved by liquid crystals doped with push–pull azobenzene and can be used for energy‐saving smart windows. The self‐shading light shutter is transparent during cool weather or under weak sunlight, which could save the energy used for heating and lighting, and can be switched from transparent to opaque during warm weather or under strong sunlight, saving energy used for cooling.