‘Smart’ light-reflective windows based on temperature responsive twisted nematic liquid crystal polymers
| Autor: | Rcgm Roel Loonen, Augustinus J. J. Kragt, Dirk J. Broer, Albert P. H. J. Schenning, Michael G. Debije |
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| Přispěvatelé: | Stimuli-responsive Funct. Materials & Dev., Building Performance, Institute for Complex Molecular Systems, ICMS Core, EIRES Chem. for Sustainable Energy Systems, EIRES System Integration, EAISI High Tech Systems |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_classification
Materials science Polymers and Plastics business.industry 'smart' windows temperature responsive polymers Window (computing) Polymer Polarizer Reflectivity law.invention Transparency (projection) semi-interpenetrating networks liquid crystals chemistry law Liquid crystal Materials Chemistry Optoelectronics light reflective devices Physical and Theoretical Chemistry business Smart lighting Visible spectrum |
| Zdroj: | Journal of Polymer Science, 59(12), 1278-1284. Wiley |
| ISSN: | 2642-4169 2642-4150 |
| Popis: | 'Smart' windows which reversibly increase their reflectivity upon heating are attracting considerable attention as devices for maintaining comfortable indoor environmental conditions. In this work, twisted nematic semi‐interpenetrating liquid crystal networks which lose their order upon heating are sandwiched between reflective linear polarizers. This 'smart' window reversibly decreases its transmission from about 50–10% over a wavelength range between 400 and 1100 nm upon heating, resulting in the window becoming darker and reflecting more light. This 'smart' window is potentially interesting for energy saving window applications where variation between privacy and visible light transparency states is required. |
| Databáze: | OpenAIRE |
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