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dc.contributor.author강구민-
dc.contributor.author배규영-
dc.contributor.authorSuehyun K Cho-
dc.contributor.authorWounjhang Park-
dc.contributor.author김경식-
dc.contributor.authorWillie J Padilla-
dc.date.accessioned2021-06-09T04:18:30Z-
dc.date.available2021-06-09T04:18:30Z-
dc.date.issued2015-12-
dc.identifier.citationVOL 6-10103-9-
dc.identifier.issn2041-1723-
dc.identifier.other48820-
dc.identifier.urihttps://pubs.kist.re.kr/handle/201004/66232-
dc.description.abstractSolar 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 mu m. 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 k Wm(-2). This new structure has a variety of applications in solar energy harvesting, thermoplasmonics and related technologies.-
dc.publisherNature Communications-
dc.titleFlexible thin-film black gold membranes with ultrabroadband plasmonic nanofocusing for efficient solar vapour generation-
dc.typeArticle-
dc.relation.page10103-110103-9-
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