Dual-band moiré metasurface patches for multifunctional biomedical applications

There has been strong interest in developing multi-band plasmonic metasurfaces for multiple optical functions on single platforms. Herein, we developed Au moiré metasurface patches (AMMP), which leverage the tunable multi-band responses of Au moiré metasurfaces and the additional field enhancements...

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Bibliographic Details
Published in:Nanoscale 2016-11, Vol.8 (43), p.18461-18468
Main Authors: Wu, Zilong, Kelp, Glen, Yogeesh, Maruthi Nagavalli, Li, Wei, McNicholas, Kyle M, Briggs, Andrew, Rajeeva, Bharath Bangalore, Akinwande, Deji, Bank, Seth R, Shvets, Gennady, Zheng, Yuebing
Format: Article
Language:English
Subjects:
Bacteria - isolation & purification
Metals
Nanotechnology
Protein Denaturation
Proteins - analysis
Spectrophotometry, Infrared
Surface Properties
Theranostic Nanomedicine
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Summary:There has been strong interest in developing multi-band plasmonic metasurfaces for multiple optical functions on single platforms. Herein, we developed Au moiré metasurface patches (AMMP), which leverage the tunable multi-band responses of Au moiré metasurfaces and the additional field enhancements of the metal-insulator-metal configuration to achieve dual-band plasmon resonance modes in near-infrared and mid-infrared regimes with high field enhancement. Furthermore, we demonstrate the multifunctional applications of AMMP, including surface-enhanced infrared spectroscopy, optical capture and patterning of bacteria, and photothermal denaturation of proteins. With their multiple functions of high performance, in combination with cost-effective fabrication using moiré nanosphere lithography, the AMMP will enable the development of highly integrated biophotonic platforms for a wide range of applications in disease theranostics, sterilization, and the study of microbiomes.
ISSN:2040-3364
2040-3372
DOI:10.1039/c6nr06608a