TY - JOUR
T1 - Facile and Widely Applicable Route to Self-Adaptive Emissivity Modulation
T2 - Energy-Saving Demonstration with Transparent Wood
AU - Hu, Xin
AU - Cai, Wei
AU - Zhang, Yingbo
AU - Shi, Shuo
AU - Ming, Yang
AU - Yu, Rujun
AU - Chen, Daming
AU - Yang, Mengyan
AU - Wang, Faming
AU - Yang, Hongyu
AU - Kan, Chi-Wai
AU - Noor, Nuruzzaman
AU - Fei, Bin
PY - 2024/1/17
Y1 - 2024/1/17
N2 - The cooling power provided by radiative cooling is unwanted during cold hours. Therefore, self-adaptive regulation is desired for radiative cooling, especially in all-weather applications. However, current routes for radiative cooling regulation are constrained by substrates and complicated processing. Here, self-adaptive radiative cooling regulation on various potential substrates (transparent wood, PET, normal glass, and cement) was achieved by a Fabry-Perot structure consisting of a silver nanowires (AgNWs) bottom layer, PMMA spacer, and W-VO2 top layer. The emissivity-modulated transparent wood (EMTW) exhibits an emissivity contrast of 0.44 (ϵ8-13-L = ∼0.19 and ϵ8-13-H = ∼0.63), which thereby yields considerable energy savings across different climate zones. The emissivity contrast can be adjusted by varying the spinning parameters during the deposition process. Positive emissivity contrast was also achieved on three other industrially relevant substrates via this facile and widely applicable route. This proves the great significance of the approach to the promotion and wide adoption of radiative cooling regulation concept in the built environment. © 2024 American Chemical Society.
AB - The cooling power provided by radiative cooling is unwanted during cold hours. Therefore, self-adaptive regulation is desired for radiative cooling, especially in all-weather applications. However, current routes for radiative cooling regulation are constrained by substrates and complicated processing. Here, self-adaptive radiative cooling regulation on various potential substrates (transparent wood, PET, normal glass, and cement) was achieved by a Fabry-Perot structure consisting of a silver nanowires (AgNWs) bottom layer, PMMA spacer, and W-VO2 top layer. The emissivity-modulated transparent wood (EMTW) exhibits an emissivity contrast of 0.44 (ϵ8-13-L = ∼0.19 and ϵ8-13-H = ∼0.63), which thereby yields considerable energy savings across different climate zones. The emissivity contrast can be adjusted by varying the spinning parameters during the deposition process. Positive emissivity contrast was also achieved on three other industrially relevant substrates via this facile and widely applicable route. This proves the great significance of the approach to the promotion and wide adoption of radiative cooling regulation concept in the built environment. © 2024 American Chemical Society.
KW - Emissivity modulation
KW - Energy saving
KW - Fabry−Perot resonator
KW - Radiative cooling
KW - Transparent wood
UR - http://www.scopus.com/inward/record.url?scp=85182010721&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85182010721&origin=recordpage
U2 - 10.1021/acs.nanolett.3c03711
DO - 10.1021/acs.nanolett.3c03711
M3 - RGC 21 - Publication in refereed journal
C2 - 38180824
SN - 1530-6984
VL - 24
SP - 657
EP - 666
JO - Nano Letters
JF - Nano Letters
IS - 2
ER -
