Hybrid photonic/plasmonic ZnO/Au composites for sensing applications

J. A. Zapien*, Liu Yu, Chap-Hang To, Chen Limiao, J. Kováč Jr., I. Bello, S. T. Lee

*Corresponding author for this work

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review

Abstract

We have studied the enhancement factors (EF) in Surface Enhanced Raman Scattering (SERS) substrates prepared with self assembled ZnO nanorod arrays and Au nanocrystals. The ZnO/Au composite nanoarrays present experimental EF values as high as ∼107 for detection of Rhodamine 6G (R6G) using an excitation wavelength of 633 nm. We have study the EF via numerical simulations of a single ZnO/Au composite nanorod using a FDTD algorithm. Our results indicate that the coupling between the photonic wave guiding in the ZnO nanorod and the plasmonic resonance in the Au nanocrystals plays a significant role in the observed EF and need to be considered to fully understand and optimize the development of high efficiency, reproducible, and stable SERS substrates. ©2010 IEEE.
Original languageEnglish
Title of host publicationConference Proceedings - The 8th International Conference on Advanced Semiconductor Devices and Microsystems, ASDAM 2010
Pages271-274
DOIs
Publication statusPublished - 2010
Event18th International Conference on Advanced Semiconductor Devices and Microsystems, ASDAM 2010 - Smolenice, Slovakia
Duration: 25 Oct 201027 Oct 2010

Conference

Conference18th International Conference on Advanced Semiconductor Devices and Microsystems, ASDAM 2010
PlaceSlovakia
CitySmolenice
Period25/10/1027/10/10

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