Coupled Plasmon Resonances and Gap Modes in Laterally Assembled Gold Nanorod Arrays

Jatish Kumar; Xingzhan Wei; Steven J. Barrow; Alison M. Funston; K. George Thomas; Paul Mulvaney

doi:10.1515/zpch-2018-1163

Coupled Plasmon Resonances and Gap Modes in Laterally Assembled Gold Nanorod Arrays

Jatish Kumar, Xingzhan Wei, Steven J. Barrow, Alison M. Funston, K. George Thomas, Paul Mulvaney

School of Chemistry

Research output: Contribution to journal › Article › Research › peer-review

5 Citations (Scopus)

Abstract

The assembly of metal nanocrystals offers a flexible method for creating new materials with tunable, size-dependent optical properties. Here we study the lateral assembly of gold nanorods into arrays, which leads to strong colour changes due to surface plasmon coupling. We also demonstrate the first example of gap modes in colloid systems, an optical mode in which light waves propagate in the channels between the gold rods. Such modes resonate at wavelengths which strongly depend on the gap width and length.

Original language	English
Pages (from-to)	1607-1617
Number of pages	11
Journal	Zeitschrift fur Physikalische Chemie
Volume	232
Issue number	9-11
DOIs	https://doi.org/10.1515/zpch-2018-1163
Publication status	Published - 2018

Keywords

chain length
gap modes
gold nanorods
lateral assembly
surface plasmons

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10.1515/zpch-2018-1163

Cite this

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AU - Thomas, K. George

AU - Mulvaney, Paul

PY - 2018

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AB - The assembly of metal nanocrystals offers a flexible method for creating new materials with tunable, size-dependent optical properties. Here we study the lateral assembly of gold nanorods into arrays, which leads to strong colour changes due to surface plasmon coupling. We also demonstrate the first example of gap modes in colloid systems, an optical mode in which light waves propagate in the channels between the gold rods. Such modes resonate at wavelengths which strongly depend on the gap width and length.

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KW - surface plasmons

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Coupled Plasmon Resonances and Gap Modes in Laterally Assembled Gold Nanorod Arrays

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Keywords

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ARC Centre of Excellence in Exciton Science

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Coupled Plasmon Resonances and Gap Modes in Laterally Assembled Gold Nanorod Arrays

Abstract

Keywords

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ARC Centre of Excellence in Exciton Science

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