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Improved Enhancement Factor for SERS using Broad Ion Beam Induced Self-organized Gold Nanocones

Published online by Cambridge University Press:  19 February 2019

Bhaveshkumar Kamaliya Open the ORCID record for Bhaveshkumar Kamaliya [Opens in a new window] ,
Rakesh G. Mote ,
Mohammed Aslam  and
Jing Fu
Bhaveshkumar Kamaliya
Affiliation:
IITB-Monash Research Academy, Indian Institute of Technology Bombay, Mumbai400076, India; Department of Physics, Indian Institute of Technology Bombay, Mumbai400076, India; Department of Mechanical and Aerospace Engineering, Monash University, Clayton, VIC3800, Australia;
Rakesh G. Mote*
Affiliation:
Department of Mechanical Engineering, Indian Institute of Technology Bombay, Mumbai400076, India;
Mohammed Aslam
Affiliation:
Department of Physics, Indian Institute of Technology Bombay, Mumbai400076, India;
Jing Fu
Affiliation:
Department of Mechanical and Aerospace Engineering, Monash University, Clayton, VIC3800, Australia;
*
*Corresponding Author. E-mail: [email protected]
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Abstract

Sparsely distributed and self-organized gold-nanocones are fabricated by broad argon ion beam sputtering on the gold surface with grazing incident angle. The rotation of the sample with respect to the vertical axis has found to influence the morphology of the obtained nanostructures. Ion beam irradiation of the sample leads to formation of nanoripples when the sample is held stationary, otherwise nanocones are formed if the sample is rotated during irradiation. A hybrid gold-nanocone/graphene/gold-nanohole based surface-enhanced Raman scattering (SERS) sensor is proposed and shown to exhibit an enhancement factor of 109 via finite-difference time-domain (FDTD) simulations.

Keywords

surface enhanced Raman spectroscopy (SERS)ion-beam processingnanostructureplasmonic
Type
Articles
Information
MRS Advances , Volume 4 , Issue 11-12: Electronic, Photonic and Magnetic Materials , 2019 , pp. 697 - 703
Copyright
Copyright © Materials Research Society 2019 

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