File Download
Links for fulltext
(May Require Subscription)
- Publisher Website: 10.1038/s41598-020-68411-6
- Scopus: eid_2-s2.0-85087710967
- PMID: 32647345
- WOS: WOS:000548564900090
- Find via
Supplementary
- Citations:
- Appears in Collections:
Article: Bio-inspired TiO2 nano-cone antireflection layer for the optical performance improvement of VO2 thermochromic smart windows
Title | Bio-inspired TiO2 nano-cone antireflection layer for the optical performance improvement of VO2 thermochromic smart windows |
---|---|
Authors | |
Keywords | Vanadium Dioxide Metal-Insulator Transition Thermochromatic Materials |
Issue Date | 2020 |
Publisher | Nature Research (part of Springer Nature): Fully open access journals. The Journal's web site is located at http://www.nature.com/srep/index.html |
Citation | Scientific Reports, 2020, v. 10, p. article no. 11376 How to Cite? |
Abstract | Vanadium dioxide (VO2) is a promising material for thermochromic glazing. However, VO2 thermochromic smart windows suffer from several problems that prevent commercialization: low luminous transmittance (Tlum) and low solar modulation ability (ΔTsol). The solution to these problems can be sought from nature where the evolution of various species has enabled them to survive. Investigations into the morphology of moths eyes has shown that their unique nanostructures provide an excellent antireflection optical layer that helps moths sharply capture the light in each wavelength from a wide angle. Inspired by this mechanism, a VO2 thermochromic smart window coated with a TiO2 antireflection layer with a novel nano-cone structure, is presented in this study to achieve high Tlum and ΔTsol. Optimization for the key structure parameters is summarized based on the FDTD numerical simulations. The optimized structure exhibits a Tlum of 55.4% with ΔTsol of 11.3%, an improvement of about 39% and 72% respectively compared to the VO2 window without an antireflection layer. Furthermore, wide-angle antireflection and polarization independence are also demonstrated by this nano-cone coating. This work provides an alternative method to enhance the optical performance of VO2 smart windows. |
Persistent Identifier | http://hdl.handle.net/10722/289736 |
ISSN | 2023 Impact Factor: 3.8 2023 SCImago Journal Rankings: 0.900 |
PubMed Central ID | |
ISI Accession Number ID |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Liu, S | - |
dc.contributor.author | Tso, CY | - |
dc.contributor.author | Lee, HH | - |
dc.contributor.author | Zhang, Y | - |
dc.contributor.author | Yu, KM | - |
dc.contributor.author | Chao, CYH | - |
dc.date.accessioned | 2020-10-22T08:16:43Z | - |
dc.date.available | 2020-10-22T08:16:43Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | Scientific Reports, 2020, v. 10, p. article no. 11376 | - |
dc.identifier.issn | 2045-2322 | - |
dc.identifier.uri | http://hdl.handle.net/10722/289736 | - |
dc.description.abstract | Vanadium dioxide (VO2) is a promising material for thermochromic glazing. However, VO2 thermochromic smart windows suffer from several problems that prevent commercialization: low luminous transmittance (Tlum) and low solar modulation ability (ΔTsol). The solution to these problems can be sought from nature where the evolution of various species has enabled them to survive. Investigations into the morphology of moths eyes has shown that their unique nanostructures provide an excellent antireflection optical layer that helps moths sharply capture the light in each wavelength from a wide angle. Inspired by this mechanism, a VO2 thermochromic smart window coated with a TiO2 antireflection layer with a novel nano-cone structure, is presented in this study to achieve high Tlum and ΔTsol. Optimization for the key structure parameters is summarized based on the FDTD numerical simulations. The optimized structure exhibits a Tlum of 55.4% with ΔTsol of 11.3%, an improvement of about 39% and 72% respectively compared to the VO2 window without an antireflection layer. Furthermore, wide-angle antireflection and polarization independence are also demonstrated by this nano-cone coating. This work provides an alternative method to enhance the optical performance of VO2 smart windows. | - |
dc.language | eng | - |
dc.publisher | Nature Research (part of Springer Nature): Fully open access journals. The Journal's web site is located at http://www.nature.com/srep/index.html | - |
dc.relation.ispartof | Scientific Reports | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.subject | Vanadium Dioxide | - |
dc.subject | Metal-Insulator Transition | - |
dc.subject | Thermochromatic Materials | - |
dc.title | Bio-inspired TiO2 nano-cone antireflection layer for the optical performance improvement of VO2 thermochromic smart windows | - |
dc.type | Article | - |
dc.identifier.email | Chao, CYH: cyhchao@hku.hk | - |
dc.identifier.authority | Chao, CYH=rp02396 | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1038/s41598-020-68411-6 | - |
dc.identifier.pmid | 32647345 | - |
dc.identifier.pmcid | PMC7347835 | - |
dc.identifier.scopus | eid_2-s2.0-85087710967 | - |
dc.identifier.hkuros | 316095 | - |
dc.identifier.volume | 10 | - |
dc.identifier.spage | article no. 11376 | - |
dc.identifier.epage | article no. 11376 | - |
dc.identifier.isi | WOS:000548564900090 | - |
dc.publisher.place | United Kingdom | - |
dc.identifier.issnl | 2045-2322 | - |