Journal article

Vibrational coupling in plasmonic molecules

Chongyue Yi, Pratiksha D Dongare, Man-Nung Su, Wenxiao Wang, Debadi Chakraborty, Fangfang Wen, Wei-Shun Chang, John E Sader, Peter Nordlander, Naomi J Halas, Stephan Link

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | NATL ACAD SCIENCES | Published : 2017

Abstract

Plasmon hybridization theory, inspired by molecular orbital theory, has been extremely successful in describing the near-field coupling in clusters of plasmonic nanoparticles, also known as plasmonic molecules. However, the vibrational modes of plasmonic molecules have been virtually unexplored. By designing precisely configured plasmonic molecules of varying complexity and probing them at the individual plasmonic molecule level, intramolecular coupling of acoustic modes, mediated by the underlying substrate, is observed. The strength of this coupling can be manipulated through the configuration of the plasmonic molecules. Surprisingly, classical continuum elastic theory fails to account for..

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University of Melbourne Researchers

Grants

Awarded by Robert A. Welch Foundation


Awarded by National Science Foundation


Awarded by Air Force Grant


Awarded by Army Grant


Funding Acknowledgements

This work was supported by Robert A. Welch Foundation Grants C-1222 (to P.N.), C-1220 (to N.J.H.), and C-1664 (to S.L.). P.N., N.J.H., and S.L. were supported by Army Grant MURI W911NF-12-1-0407 and Air Force Grant MURI FA9550-15-1-0022. S.L. was supported by National Science Foundation Grant ECCS-1608917. D.C. and J.E.S. were supported by the Australian Research Council (ARC) grants scheme and the ARC Centre of Excellence in Exciton Science.