Tunable plasmonic properties in metal nanohole arrays for SERS single-molecule detection

Maria Grazia Manera; Adriano Colombelli; Daniela Lospinoso; Roberto Rella

doi:10.1117/12.3016673

20 June 2024 Tunable plasmonic properties in metal nanohole arrays for SERS single-molecule detection

Maria Grazia Manera, Adriano Colombelli, Daniela Lospinoso, Roberto Rella

Proceedings Volume PC13008, Biophotonics in Point-of-Care III; PC1300807 (2024) https://doi.org/10.1117/12.3016673
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

Metal nano-hole arrays, modulating resonances intensity and spectral position, span visible to near-infrared ranges, unlocking sensing applications. Displacing electric fields toward the interface with air, facilitated by a high-index material (SiN) substrate, refines the sensitive region and improve enhancement. Efficient and reproducible fabrication protocols, such as the modified nanosphere lithography (NSL) method, have been developed by our group for the creation of highly ordered nano-hole arrays (NHAs) in thin gold films. These arrays feature diverse properties, including thickness, hole shape, diameter, and lateral periodic or quasi-periodic spacing. Interference and coupling between plasmonic modes of different natures present a route for enhancement for SERS applications. Integrating these nanostructures within a fiber-based microfluidic system offers an innovative solution for pesticide detection. This system, characterized by straightforward fabrication, cost-effectiveness, sensitivity, and specificity, emerges as a formidable contender for in-situ environmental monitoring, encapsulating cutting-edge research and innovation in pest control.

Conference Presentation

Citation Download Citation

Maria Grazia Manera, Adriano Colombelli, Daniela Lospinoso, and Roberto Rella "Tunable plasmonic properties in metal nanohole arrays for SERS single-molecule detection", Proc. SPIE PC13008, Biophotonics in Point-of-Care III, PC1300807 (20 June 2024); https://doi.org/10.1117/12.3016673

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