Metal-dielectric-CNT nanowires for surface-enhanced Raman spectroscopy

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United States of America Patent

PATENT NO 9778197
APP PUB NO 20150036132A1
SERIAL NO

14450633

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Abstract

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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.

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Patent Owner(s)

  • ETH ZURICH;LAWRENCE LIVERMORE NATIONAL SECURITY, LLC

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Altun, Ali Zurich, CH 2 2
Bond, Tiziana C Livermore, US 23 250
Park, Hyung Gyu Zurich, CH 17 199

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