Letter. Omnidirectional absorption in nanostructured metal surfaces
Light absorbers available at present provide far from optimal black-body performance. The need for more efficient absorbers is particularly acute on the microscale, where they can play a significant role in preventing crosstalk between optical interconnects, and also as thermal light-emitting source...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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2008-05.
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| Online Access: | Get fulltext Get fulltext |
| LEADER | 01912 am a22002053u 4500 | ||
|---|---|---|---|
| 001 | 145047 | ||
| 042 | |a dc | ||
| 100 | 1 | 0 | |a Teperik, T.V. |e author |
| 700 | 1 | 0 | |a García de Abajo, F.J. |e author |
| 700 | 1 | 0 | |a Borisov, A.G. |e author |
| 700 | 1 | 0 | |a Abdelsalam, M. |e author |
| 700 | 1 | 0 | |a Bartlett, P.N. |e author |
| 700 | 1 | 0 | |a Sugawara, Y. |e author |
| 700 | 1 | 0 | |a Baumberg, J.J. |e author |
| 245 | 0 | 0 | |a Letter. Omnidirectional absorption in nanostructured metal surfaces |
| 260 | |c 2008-05. | ||
| 856 | |z Get fulltext |u https://eprints.soton.ac.uk/145047/1/__soton.ac.uk_ude_PersonalFiles_Users_jks1m11_mydocuments_Chemistry_REF%2520papers_Bartlett_PNB%2520omniodirectional%2520green%2520%252B%2520cover.pdf | ||
| 856 | |z Get fulltext |u https://eprints.soton.ac.uk/145047/2/__userfiles.soton.ac.uk_Users_nl2_mydesktop_Deposits_Bev_222-SI.pdf | ||
| 520 | |a Light absorbers available at present provide far from optimal black-body performance. The need for more efficient absorbers is particularly acute on the microscale, where they can play a significant role in preventing crosstalk between optical interconnects, and also as thermal light-emitting sources. Several efforts have been made in this context to achieve near-total but directionally dependent absorption using periodic grating structures. However, the ability to absorb light completely for any incident direction of light remains a challenge. Here we show that total omnidirectional absorption of light can be achieved in nanostructured metal surfaces that sustain localized optical excitations. The effect is realized over a full range of incident angles and can be tuned throughout the visible and near-infrared regimes by scaling the nanostructure dimensions. We suggest that surfaces displaying omnidirectional absorption will play a key role in devising efficient photovoltaic cells in which the absorbed light leads to electron-hole pair production. | ||
| 655 | 7 | |a Article | |