Abstract
Light-matter interactions are extremely important, as they sustain life on Earth and can be tailored for diverse applications in areas such as solar energy conversion, chemical sensing, and information storage. One key process of these interactions is the absorption of photons. We demonstrate a novel material capable of absorbing up to 98% of incident visible light. The material comprises a thin sheet of a tightly packed two-dimensional lattice of metal nanoparticles, called plasmene, supported by a thin (subwavelength) dielectric film deposited on top of a mirror. We demonstrate how the resulting metasurface absorbers are useful in surface-enhanced spectroscopy and in the generation of plasmonic hot carriers. These structures hold great promise for applications in structural color, sensing, and photocatalysis.
Original language | English |
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Pages (from-to) | 314-321 |
Number of pages | 8 |
Journal | ACS Photonics |
Volume | 6 |
Issue number | 2 |
DOIs | |
Publication status | Published - 20 Feb 2019 |
Keywords
- hot carriers
- metasurfaces
- optical magnetic mode
- perfect absorption
- plasmene
- plasmonics
Equipment
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Melbourne Centre for Nanofabrication
Sean Langelier (Manager)
Office of the Vice-Provost (Research and Research Infrastructure)Facility/equipment: Facility