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- Publisher Website: 10.1016/j.joule.2018.10.019
- Scopus: eid_2-s2.0-85060015558
- WOS: WOS:000457552800025
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Article: Broadband Light Management with Thermochromic Hydrogel Microparticles for Smart Windows
Title | Broadband Light Management with Thermochromic Hydrogel Microparticles for Smart Windows |
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Authors | |
Keywords | optical phase change materials microgels solar radiation smart window |
Issue Date | 2019 |
Publisher | Cell Press. The Journal's web site is located at https://www.journals.elsevier.com/joule |
Citation | Joule, 2019, v. 3 n. 1, p. 290-302 How to Cite? |
Abstract | Control of solar transmission through windows promises to reduce building energy consumption. However, the ability of current chromogenic technologies to regulate solar gain with the tunable extinction of phase-change materials is still far from optimum. We report a strategy for optimizing the transmittance modulation range of temperature-responsive hydrogel particles by means of tuning the light-scattering behaviors through controlling particle size and internal structure. An emerging thermochromic material, poly(N-isopropylacrylamide)-2-aminoethylmethacrylate hydrochloride (pNIPAm-AEMA) microparticles, was synthesized to demonstrate this strategy. The average size of pNIPAm-AEMA microparticles varies from 1,388 nm at 25°C to 546 nm at 35°C, contributing to an unprecedented infrared transmittance modulation of 75.6%. A high luminous transmittance of 87.2% at 25°C had also been accomplished. An investigation of the tunable scattering behaviors of pNIPAm-AEMA particles provided mechanistic insight into light management by this class of materials, the application field of which is beyond energy-saving smart windows. |
Persistent Identifier | http://hdl.handle.net/10722/279449 |
ISSN | 2023 Impact Factor: 38.6 2023 SCImago Journal Rankings: 11.724 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Li, XH | - |
dc.contributor.author | Liu, C | - |
dc.contributor.author | Feng, SP | - |
dc.contributor.author | Fang, NX | - |
dc.date.accessioned | 2019-11-01T07:17:34Z | - |
dc.date.available | 2019-11-01T07:17:34Z | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | Joule, 2019, v. 3 n. 1, p. 290-302 | - |
dc.identifier.issn | 2542-4351 | - |
dc.identifier.uri | http://hdl.handle.net/10722/279449 | - |
dc.description.abstract | Control of solar transmission through windows promises to reduce building energy consumption. However, the ability of current chromogenic technologies to regulate solar gain with the tunable extinction of phase-change materials is still far from optimum. We report a strategy for optimizing the transmittance modulation range of temperature-responsive hydrogel particles by means of tuning the light-scattering behaviors through controlling particle size and internal structure. An emerging thermochromic material, poly(N-isopropylacrylamide)-2-aminoethylmethacrylate hydrochloride (pNIPAm-AEMA) microparticles, was synthesized to demonstrate this strategy. The average size of pNIPAm-AEMA microparticles varies from 1,388 nm at 25°C to 546 nm at 35°C, contributing to an unprecedented infrared transmittance modulation of 75.6%. A high luminous transmittance of 87.2% at 25°C had also been accomplished. An investigation of the tunable scattering behaviors of pNIPAm-AEMA particles provided mechanistic insight into light management by this class of materials, the application field of which is beyond energy-saving smart windows. | - |
dc.language | eng | - |
dc.publisher | Cell Press. The Journal's web site is located at https://www.journals.elsevier.com/joule | - |
dc.relation.ispartof | Joule | - |
dc.subject | optical phase change materials | - |
dc.subject | microgels | - |
dc.subject | solar radiation | - |
dc.subject | smart window | - |
dc.title | Broadband Light Management with Thermochromic Hydrogel Microparticles for Smart Windows | - |
dc.type | Article | - |
dc.identifier.email | Liu, C: willmole@hku.hk | - |
dc.identifier.email | Feng, SP: hpfeng@hku.hk | - |
dc.identifier.authority | Feng, SP=rp01533 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.joule.2018.10.019 | - |
dc.identifier.scopus | eid_2-s2.0-85060015558 | - |
dc.identifier.hkuros | 308567 | - |
dc.identifier.volume | 3 | - |
dc.identifier.issue | 1 | - |
dc.identifier.spage | 290 | - |
dc.identifier.epage | 302 | - |
dc.identifier.isi | WOS:000457552800025 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 2542-4351 | - |