Ultrasensitive biosensors based on waveguide-coupled long-range surface plasmon resonance (WC-LRSPR) for enhanced fluorescence spectroscopy

Tran, Nhu Hoa Thi; Phung, Viet-Duc; Ta, Hanh Kieu Thi; Lãm, Vũ Đình; Manh, Do Hung; Pham, Ngoc Kim; Kim, Jae Young; Lee, Nae Yoon; Phan, Bach Thang

doi:10.1039/d1ra02130c

Cited by 1 publication

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“…It was observed that while MEF resulted in predominantly isotropic emission, the usage of metal thin film and prism supported the realization of highly polarized and distinctly guided (directional) emission of fluorescence. This phenomenon that supports more than 50 percent signal collection of fluorescence due to its high directionality and background suppression is called as surface plasmon-coupled fluorescence (SPCF), where fluorophores are being utilized as radiating dipoles (8)(9)(10)(11)(12)(13)(14)(15). Subsequently, other kinds of luminophores were explored to realize surface plasmoncoupled phosphorescence (SPCP) and surface plasmon-coupled chemiluminescence (SPCC) (3,16).…”

Section: Introductionmentioning

confidence: 99%

Mobile Phone Camera-Based Detection of Surface Plasmon-Coupled Fluorescence from Streptavidin Magnetic Nanoparticles and Graphene Oxide Hybrid Nanointerface

et al. 2022

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Surface plasmon-coupled fluorescence (SPCF) technique has developed as a highly sensitive, specific, and versatile methodology for quantitative and qualitative bioassays. It relies on the ability of prism-coupling approach to channelize the emitted photons into sharply directional emission with attributes of propagating surface plasmons resulting in highly p-polarized emission. There are voluminous research studies demonstrating the utility of wide range of nanomaterials as effective spacers in SPCF. Streptavidin magnetic nanoparticles (SMNPs) serve as excellent candidates for biomedical applications on account of their biocompatibility and tunable magnetic properties. From the perspective of magneto-plasmonics, although they are excellent candidates for SPCF explorations, they are underutilized in this domain. In this background, we report the first-time demonstration of quintessential integration of SMNPs and graphene oxide π-plasmons as crucial spacer material for augmented SPCF. The results obtained with exorbitant detector systems are substituted with reliable mobile phone camera based detectors, amenable for resource-limited settings.

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Section: Introductionmentioning

confidence: 99%

Mobile Phone Camera-Based Detection of Surface Plasmon-Coupled Fluorescence from Streptavidin Magnetic Nanoparticles and Graphene Oxide Hybrid Nanointerface

et al. 2022

View full text Add to dashboard Cite

show abstract

Ultrasensitive biosensors based on waveguide-coupled long-range surface plasmon resonance (WC-LRSPR) for enhanced fluorescence spectroscopy

Abstract: We investigated the coupling phenomenon between plasmonic resonance and waveguide modes through theoretical and experimental parametric analyses on the bimetallic waveguide-coupled long-range surface plasmon resonance (Bi-WCLRSPR) structure.

Cited by 1 publication

References 62 publications

Mobile Phone Camera-Based Detection of Surface Plasmon-Coupled Fluorescence from Streptavidin Magnetic Nanoparticles and Graphene Oxide Hybrid Nanointerface

Mobile Phone Camera-Based Detection of Surface Plasmon-Coupled Fluorescence from Streptavidin Magnetic Nanoparticles and Graphene Oxide Hybrid Nanointerface

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