Plasmon-Coupled Whispering Gallery Modes on Nanodisk Arrays for Signal Enhancements

Tae Young Kang, Wonju Lee, Heesang Ahn, Dong Myeong Shin, Chang Seok Kim, Jin Woo Oh, Donghyun Kim, Kyujung Kim

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Metallic nanostructures including single and double nanodisks are successfully used to enhance the localized electric field in vicinity of microcavity in whispering gallery mode (WGM) sensor. We demonstrate numerical calculations of plasmonic coupling of WGMs to single and double nanodisk arrays on a planar substrate. We then experimentally confirmed that the resonance wavelength of WGM sensor was dramatically shifted by adoption of single and double nanodisks on the surface of microcavity in the WGM sensor. Thus, our approach provides the tunable sensitivity of WGM sensor, and has a great potential to be used in numerous areas where the single biomolecule, protein-protein folding and biomolecular interactions are involved.

Original languageEnglish
Article number11737
JournalScientific reports
Volume7
Issue number1
DOIs
Publication statusPublished - 2017 Dec 1

All Science Journal Classification (ASJC) codes

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    Kang, T. Y., Lee, W., Ahn, H., Shin, D. M., Kim, C. S., Oh, J. W., Kim, D., & Kim, K. (2017). Plasmon-Coupled Whispering Gallery Modes on Nanodisk Arrays for Signal Enhancements. Scientific reports, 7(1), [11737]. https://doi.org/10.1038/s41598-017-12053-8