Introducing ‘low cost large scale’ hydrophobic SERS substrate

Anuj Kumar Singh; Kishor K. Mandal; Abhay Anand VS; Anand Kumar; Saurabh Dixit; Anshuman Kumar

doi:10.1117/12.2593185

1 August 2021 Introducing ‘low cost large scale’ hydrophobic SERS substrate

Anuj Kumar Singh, Kishor K. Mandal, Abhay Anand VS, Anand Kumar, Saurabh Dixit, Anshuman Kumar

Proceedings Volume 11802, Nanoengineering: Fabrication, Properties, Optics, Thin Films, and Devices XVIII; 1180206 (2021) https://doi.org/10.1117/12.2593185
Event: SPIE Nanoscience + Engineering, 2021, San Diego, California, United States

Abstract

Large-area nano-patterned surfaces invoking hydrophobicity hold great significance for Surface Enhanced RamanSpectroscopy or SERS substrates. Conventionally, these structures are fabricated using state-of-the-art litho-graphic techniques. These techniques while being efficient, are complex and are cost-ineffective. Here, we report a low-cost, facile and scalable solution for fabrication of periodic array of metallic nanocones using colloidal lithography and reactive ion etching process. Nanocone array coated with gold thin film serves as a hydrophobicsurface with plasmonic properties. Hydrophobicity on the cones helps to keep the analyte molecule localized near the tip of nanocones where, due to plasmonic behavior of metal thin film i.e. field enhancement by the metal gives rise to significant SERS. We validate this concept through our fabricated substrate via detection ofRhodamine 6G molecules using Raman spectroscopy and report the limit of detection upto 1 nM.

Conference Presentation

Citation Download Citation

Anuj Kumar Singh, Kishor K. Mandal, Abhay Anand VS, Anand Kumar, Saurabh Dixit, and Anshuman Kumar "Introducing ‘low cost large scale’ hydrophobic SERS substrate", Proc. SPIE 11802, Nanoengineering: Fabrication, Properties, Optics, Thin Films, and Devices XVIII, 1180206 (1 August 2021); https://doi.org/10.1117/12.2593185

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available