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United States Patent Application

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A sensor with a substrate includes nanowires extending vertically from the substrate, a hafnia coating on the nanowires that provides hafnia coated nanowires, and a noble metal coating on the hafnia coated nanowires. The top of the hafnia and noble metal coated nanowires bent onto one another to create a canopy forest structure. There are numerous randomly arranged holes that let through scattered light. The many points of contact, hot spots, amplify signals. The methods include the steps of providing a Raman spectroscopy substrate, introducing nano crystals to the Raman spectroscopy substrate, growing a forest of nanowires from the nano crystals on the Raman spectroscopy substrate, coating the nanowires with hafnia providing hafnia coated nanowires, and coating the hafnia coated nanowires with a noble metal or other metal.
Bond, Tiziana C. (Livermore, CA), Altun, Ali (Zurich, CH), Park, Hyung Gyu (Zurich, CH)
14/ 450,633
August 4, 2014
STATEMENT AS TO RIGHTS TO APPLICATIONS MADE UNDER FEDERALLY SPONSORED RESEARCH AND DEVELOPMENT [0001] The United States Government has rights in this application pursuant to Contract No. DE-AC52-07NA27344 between the United States Department of Energy and Lawrence Livermore National Security, LLC for the operation of Lawrence Livermore National Laboratory. CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application claims priority to and benefit under 35 U.S.C. .sctn.119(e) of U.S. Provisional Patent Application No. 61/862,405 filed Aug. 5, 2013 entitled "Reusable Template Based on Metal-Dielectric-CNT Nanowires for Surface-Enhanced Sensitivity," the content of which is hereby incorporated by reference in its entire for all purposes.