Arrayed graphene enhanced surface plasmon resonance for sensing applications

Alessandro Fantoni; Yuri Vygranenko; Antonio Maçarico; Caterina Serafinelli; Miguel Fernandes; Rima Mansour; Rui Jesus; Manuela Vieira

doi:10.1117/12.2583023

5 March 2021 Arrayed graphene enhanced surface plasmon resonance for sensing applications

Alessandro Fantoni, Yuri Vygranenko, Antonio Maçarico, Caterina Serafinelli, Miguel Fernandes, Rima Mansour, Rui Jesus, Manuela Vieira

Author Affiliations +

Proceedings Volume 11682, Optical Components and Materials XVIII; 1168213 (2021) https://doi.org/10.1117/12.2583023
Event: SPIE OPTO, 2021, Online Only

Abstract

Combination of carbon-based nanomaterials (CNMs) with AuNPs has been demonstrated to enhance the LSPR response and facilitate the functionalization with specific and selective antibodies. Also, the introduction of CNMs in the plasmonic layer allows tuning of the LSPR central frequency. Joining the double dependence of the LSPR on the MNPs size and the presence of CNMs, it is possible to create a set of plasmonic layers whose LSPR wavelengths are distributed in a spectral range of few tenth of nanometers. This consideration paves the way to an LSPR sensor with an arrayed structure, where each element maximizes its specific LSPR at its own wavelength. Illumination with a broad light source produces a different response in each one of the elements. The working process underlying the sensing operation is that each element of the sensor array acts like a band-stop optical filter for a specific wavelength. The output can be extracted by the application of an image analysis approach to the spatially modulated light crossing the sensor area, based on a color recognition algorithm. A change in the refractive index over the sensor array will shift the rejection band of the sensing elements. An automatized method for color recognition can support the analysis of the refractive index variations yielding the final sensor output. A figure of merit, highlighting the LSPR central wavelength and spectral extension for different LSPR configurations, is also obtained for different sizes of the AuNPs and different flavors of CNMs.

Conference Presentation

Citation Download Citation

Alessandro Fantoni, Yuri Vygranenko, Antonio Maçarico, Caterina Serafinelli, Miguel Fernandes, Rima Mansour, Rui Jesus, and Manuela Vieira "Arrayed graphene enhanced surface plasmon resonance for sensing applications", Proc. SPIE 11682, Optical Components and Materials XVIII, 1168213 (5 March 2021); https://doi.org/10.1117/12.2583023

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