title: Dual-band moiré metasurface patches for multifunctional biomedical applications.
abstract: 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.
authors: Department of Mechanical Engineering, Materials Science and Engineering Program, and Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, USA. zheng@austin.utexas.edu.
authors: Zilong
authors: Z
authors: Wu
authors: Department of Physics, The University of Texas at Austin, Austin, Texas 78712, USA.
authors: Glen
authors: G
authors: Kelp
authors: Microelectronics Research Centre, The University of Texas at Austin, Austin, Texas 78758, USA.
authors: Maruthi Nagavalli
authors: MN
authors: Yogeesh
authors: Microelectronics Research Centre, The University of Texas at Austin, Austin, Texas 78758, USA.
authors: Wei
authors: W
authors: Li
authors: Microelectronics Research Centre, The University of Texas at Austin, Austin, Texas 78758, USA.
authors: Kyle M
authors: KM
authors: McNicholas
authors: Microelectronics Research Centre, The University of Texas at Austin, Austin, Texas 78758, USA.
authors: Andrew
authors: A
authors: Briggs
authors: Department of Mechanical Engineering, Materials Science and Engineering Program, and Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, USA. zheng@austin.utexas.edu.
authors: Bharath Bangalore
authors: BB
authors: Rajeeva
authors: Microelectronics Research Centre, The University of Texas at Austin, Austin, Texas 78758, USA.
authors: Deji
authors: D
authors: Akinwande
authors: Microelectronics Research Centre, The University of Texas at Austin, Austin, Texas 78758, USA.
authors: Seth R
authors: SR
authors: Bank
authors: Department of Physics, The University of Texas at Austin, Austin, Texas 78712, USA.
authors: Gennady
authors: G
authors: Shvets
authors: Department of Mechanical Engineering, Materials Science and Engineering Program, and Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, USA. zheng@austin.utexas.edu.
authors: Yuebing
authors: Y
authors: Zheng
mesh_terms: D001419:Bacteria / Q000302:isolation & purification; D008670:Metals; D036103:Nanotechnology; D011489:Protein Denaturation; D011506:Proteins / Q000032:analysis; D013055:Spectrophotometry, Infrared; D013499:Surface Properties; D000068936:Theranostic Nanomedicine
chemical_list: D008670:Metals; D011506:Proteins