Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 6064-6069 |
| Journal | Journal of Materials Chemistry A |
| Volume | 4 |
| Issue number | 16 |
| DOIs | |
| Publication status | Published - 2016 |
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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, No. 16, 2016, p. 6064-6069.Research output: Contribution to journal › Article › Academic › peer-review
TY - JOUR
T1 - Electrically tunable infrared reflector with adjustable bandwidth broadening up to 1100 nm
AU - Khandelwal, H.
AU - Debije, M.G.
AU - White, T.J.
AU - Schenning, A.P.H.J.
PY - 2016
Y1 - 2016
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84967214632&partnerID=8YFLogxK
U2 - 10.1039/C6TA01647B
DO - 10.1039/C6TA01647B
M3 - Article
VL - 4
SP - 6064
EP - 6069
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
SN - 2050-7488
IS - 16
ER -