Abstract
Localized Surface Plasmon Resonance (LSPR) sensors have potential applications in essential and important areas such as bio-sensor technology, especially in medical applications and gas sensors in environmental monitoring applications. Figure of Merit (FOM) and Sensitivity (S) measurements are two ways to assess the performance of an LSPR sensor. However, LSPR sensors suffer low FOM compared to the conventional Surface Plasmon Resonance (SPR) sensor due to high losses resulting from radiative damping of LSPs waves. Different methodologies have been utilized to enhance the performance of LSPR sensors, including various geometrical and material parameters, plasmonic wave coupling from different structures, and integration of noble metals with graphene, which is the focus of this report. Recent studies of metal-graphene hybrid plasmonic systems have shown its capability of promoting the performance of the LSPR sensor to a level that enhances its chance for commercialization. In this review, fundamental physics, the operation principle, and performance assessment of the LSPR sensor are presented followed by a discussion of plasmonic materials and a summary of methods used to optimize the sensor’s performance. A focused review on metal-graphene hybrid nanostructure and a discussion of its role in promoting the performance of the LSPR sensor follow.
Highlights
The Surface Plasmonic Resonance (SPR) sensor is a common and commercialized sensor used in different areas such healthcare and gas sensing [1,2]
A summary of the different approaches used to enhance the performance of the Localized Surface Plasmon Resonance (LSPR) sensor follows, with additional focus on a metal-graphene material integration approach
The results showed a huge improvement in the Figure of Merit (FOM) compared to the related published work in the field of metal-graphene hybrid LSPR sensors [28], by achieving an FOM of 102.6
Summary
The Surface Plasmonic Resonance (SPR) sensor is a common and commercialized sensor used in different areas such healthcare and gas sensing [1,2]. When metallic nanoparticles are irradiated by an electromagnetic wave with a wavelength greater than the NP size, the metal’s free electrons generate oscillations called Localized Surface Plasmons (LSPs). These collective oscillations are restricted to the geometry of the nanostructure [5]. Different approaches have been reported to enhance LSPR sensor performance, including variation of the geometry and material type of the nanostructure, surface plasmon hybridization, and noble metal-2D material integrated structures such as metal-graphene hybrid nanostructures. A summary of the different approaches used to enhance the performance of the LSPR sensor follows, with additional focus on a metal-graphene material integration approach
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
