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Plasmonic propertie...
Plasmonic properties of silver trimers with trigonal symmetry fabricated by electron-beam lithography
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- Alegret, Joan, 1977 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Rindzevicius, Tomas, 1977 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Pakizeh, Tavakol, 1977 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Alaverdyan, Yury, 1976 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Gunnarsson, Linda K, 1971 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Käll, Mikael, 1963 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2008-08-26
- 2008
- Engelska.
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Ingår i: Journal of Physical Chemistry C. - : American Chemical Society (ACS). - 1932-7447 .- 1932-7455. ; 112:37, s. 14313-14317
- Relaterad länk:
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http://dx.doi.org/10...
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https://doi.org/10.1...
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https://research.cha...
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Abstract
Ämnesord
Stäng
- We investigate the dipolar plasmon modes of nanoparticle trimers formed by three equal silver disks of diameter D = 100 nm located on the vertexes of an equilateral triangle. Samples were fabricated by electron-beam lithography and studied experimentally by dark-field spectroscopy. The results are found to be in good agreement with electrodynamical simulations based on the discrete dipole approximation (DDA). Similar to nanoparticle dimers, the trimer system exhibits two hybridized dipole resonances to the red and to the blue of the single particle resonance. However, the far-field spectra are polarization-insensitive for light incident normal to the plane of the trimer, and the peak shifts, which occur as the edge-to-edge distance d between the particles decrease, are smaller than for dimers. Moreover, we find that the dipolar displacement patterns are well described by linear combinations of bonding and antibonding symmetry adapted coordinates obtained through symmetry analysis based on the ideal D-3h point-group.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Annan teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Other Engineering and Technologies (hsv//eng)
Nyckelord
- FIELD
- NANOSANDWICHES
- NANOPARTICLE PAIRS
- ENHANCED RAMAN-SCATTERING
- PARTICLES
- OPTICS
- GOLD NANOPARTICLES
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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