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A single nanoparticle as a femtojoule photonic switch and optical memory element

A single nanoparticle as a femtojoule photonic switch and optical memory element
A single nanoparticle as a femtojoule photonic switch and optical memory element
We report that a nano-aperture occupied by a single polymorphic metal nanoparticle can be used as the active elements of low energy consumption nanophotonic devices if the dielectric properties of the nano-particle can be controlled using excitation-induced structural transformations, In essence, this new opportunity relies on the fact that, in contrast to bulk solids where phase transitions are characterized by abrupt transitions between different structural forms, phase transformations in polymorphic nanoparticles proceed through a dynamic coexistence of forms - making transitions continuous and reversible.
We experimentally demonstrate this new paradigm with a gallium nanoparticle and show that using very low power laser light it can be switched between five structural phases with differing dielectric properties to provide different levels of transmission through and reflection from the nano-aperture, We also present finite element numerical modeling of light propagation through a nono-aperture blocked by a nanoparticle and analyze relevant plasmonic and scattering effects.
Soares, B.F.
89983b1e-0762-4343-b3f7-83e53ced4f36
MacDonald, K.F.
76c84116-aad1-4973-b917-7ca63935dba5
Bashevoy, M.
1b03d4b1-2f0f-41cb-b6d5-064d7f0a1f69
Fedotov, V.A.
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Soares, B.F.
89983b1e-0762-4343-b3f7-83e53ced4f36
MacDonald, K.F.
76c84116-aad1-4973-b917-7ca63935dba5
Bashevoy, M.
1b03d4b1-2f0f-41cb-b6d5-064d7f0a1f69
Fedotov, V.A.
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6

Soares, B.F., MacDonald, K.F., Bashevoy, M., Fedotov, V.A. and Zheludev, N.I. (2005) A single nanoparticle as a femtojoule photonic switch and optical memory element. Surface Plasmon Photonics 2, Austria. 21 - 26 May 2005.

Record type: Conference or Workshop Item (Paper)

Abstract

We report that a nano-aperture occupied by a single polymorphic metal nanoparticle can be used as the active elements of low energy consumption nanophotonic devices if the dielectric properties of the nano-particle can be controlled using excitation-induced structural transformations, In essence, this new opportunity relies on the fact that, in contrast to bulk solids where phase transitions are characterized by abrupt transitions between different structural forms, phase transformations in polymorphic nanoparticles proceed through a dynamic coexistence of forms - making transitions continuous and reversible.
We experimentally demonstrate this new paradigm with a gallium nanoparticle and show that using very low power laser light it can be switched between five structural phases with differing dielectric properties to provide different levels of transmission through and reflection from the nano-aperture, We also present finite element numerical modeling of light propagation through a nono-aperture blocked by a nanoparticle and analyze relevant plasmonic and scattering effects.

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More information

Published date: 2005
Venue - Dates: Surface Plasmon Photonics 2, Austria, 2005-05-21 - 2005-05-26

Identifiers

Local EPrints ID: 71011
URI: https://eprints.soton.ac.uk/id/eprint/71011
PURE UUID: 6329c0d6-4ecc-4566-ba28-9aa7010c238b
ORCID for K.F. MacDonald: ORCID iD orcid.org/0000-0002-3877-2976
ORCID for M. Bashevoy: ORCID iD orcid.org/0000-0003-2068-9047
ORCID for N.I. Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

Catalogue record

Date deposited: 11 Dec 2009
Last modified: 06 Jun 2018 13:09

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