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Flexible thin-film black gold membranes with ultrabroadband plasmonic nanofocusing for efficient solar vapour generation.

Publication ,  Journal Article
Bae, K; Kang, G; Cho, SK; Park, W; Kim, K; Padilla, WJ
Published in: Nature communications
December 2015

Solar steam generation has been achieved by surface plasmon heating with metallic nanoshells or nanoparticles, which have inherently narrow absorption bandwidth. For efficient light-to-heat conversion from a wider solar spectrum, we employ adiabatic plasmonic nanofocusing to attain both polarization-independent ultrabroadband light absorption and high plasmon dissipation loss. Here we demonstrate large area, flexible thin-film black gold membranes, which have multiscale structures of varying metallic nanoscale gaps (0-200 nm) as well as microscale funnel structures. The adiabatic nanofocusing of self-aggregated metallic nanowire bundle arrays produces average absorption of 91% at 400-2,500 nm and the microscale funnel structures lead to average reflection of 7% at 2.5-17 μm. This membrane allows heat localization within the few micrometre-thick layer and continuous water provision through micropores. We efficiently generate water vapour with solar thermal conversion efficiency up to 57% at 20 kW m(-2). This new structure has a variety of applications in solar energy harvesting, thermoplasmonics and related technologies.

Duke Scholars

Published In

Nature communications

DOI

EISSN

2041-1723

ISSN

2041-1723

Publication Date

December 2015

Volume

6

Start / End Page

10103
 

Citation

APA
Chicago
ICMJE
MLA
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Bae, K., Kang, G., Cho, S. K., Park, W., Kim, K., & Padilla, W. J. (2015). Flexible thin-film black gold membranes with ultrabroadband plasmonic nanofocusing for efficient solar vapour generation. Nature Communications, 6, 10103. https://doi.org/10.1038/ncomms10103
Bae, Kyuyoung, Gumin Kang, Suehyun K. Cho, Wounjhang Park, Kyoungsik Kim, and Willie J. Padilla. “Flexible thin-film black gold membranes with ultrabroadband plasmonic nanofocusing for efficient solar vapour generation.Nature Communications 6 (December 2015): 10103. https://doi.org/10.1038/ncomms10103.
Bae K, Kang G, Cho SK, Park W, Kim K, Padilla WJ. Flexible thin-film black gold membranes with ultrabroadband plasmonic nanofocusing for efficient solar vapour generation. Nature communications. 2015 Dec;6:10103.
Bae, Kyuyoung, et al. “Flexible thin-film black gold membranes with ultrabroadband plasmonic nanofocusing for efficient solar vapour generation.Nature Communications, vol. 6, Dec. 2015, p. 10103. Epmc, doi:10.1038/ncomms10103.
Bae K, Kang G, Cho SK, Park W, Kim K, Padilla WJ. Flexible thin-film black gold membranes with ultrabroadband plasmonic nanofocusing for efficient solar vapour generation. Nature communications. 2015 Dec;6:10103.

Published In

Nature communications

DOI

EISSN

2041-1723

ISSN

2041-1723

Publication Date

December 2015

Volume

6

Start / End Page

10103