Electrically tunable infrared reflector with adjustable bandwidth broadening up to 1100 nm

H. Khandelwal, M.G. Debije, T.J. White, A.P.H.J. Schenning

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

22 Citaties (Scopus)
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Uittreksel

A tunable infrared reflector has been fabricated using polymer stabilized cholesteric liquid crystals containing a negative dielectric, anisotropic liquid crystal and a long and flexible ethylene glycol twin crosslinker. The reflection bandwidth of this prototype smart window can be tuned from 120 nm to an unprecedented 1100 nm in the infrared region upon application of only a small DC electric field, without interfering with the incident visible solar light. Bandwidth broadening was induced using very low operational power with acceptable switching speeds but only takes place in cells with particular gap thicknesses. Calculations reveal that between 8% and 45% of incident solar infrared light can be reflected with a single cell. The infrared reflector can potentially be used as a smart window to maintain the indoor temperature throughout the year, thereby reducing reliance on artificial lighting, resulting in more than 12% reduction of building operation costs.
Originele taal-2Engels
Pagina's (van-tot)6064-6069
TijdschriftJournal of Materials Chemistry A
Volume4
Nummer van het tijdschrift16
DOI's
StatusGepubliceerd - 2016

Vingerafdruk

Infrared radiation
Bandwidth
Cholesteric liquid crystals
Liquid Crystals
Ethylene Glycol
Ethylene glycol
Liquid crystals
Polymers
Lighting
Electric fields
Costs
Temperature

Citeer dit

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Electrically tunable infrared reflector with adjustable bandwidth broadening up to 1100 nm. / Khandelwal, H.; Debije, M.G.; White, T.J.; Schenning, A.P.H.J.

In: Journal of Materials Chemistry A, Vol. 4, Nr. 16, 2016, blz. 6064-6069.

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

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