Enhanced Sensitivity of Surface Plasmon Resonance Phase-Interrogation Biosensor by Using Silver Nanoparticles

Abstract

It is demonstrated that the sensitivity of surface plasmon resonance phase-interrogation biosensor can be enhanced by using silver nanoparticles. Silver nanoparticles were fabricated on silver films by using thermal evaporation. Sizes of silver nanoparticles on silver thin film can be tuned by controlling the deposition parameters of thermal evaporation. By using surface plasmon resonance heterodyne interferometey to measure the phase difference between the p and s polarization of incident light, we have demonstrated that sensitivity of glucose detection down to the order of 10 −8 refractive index units can be obtained.

Multi-level surface enhanced Raman scattering using AgO_x thin film

“…2(a)-2(c) are analyzed by using Image J software. This image analysis method has been reported in our previous works [32]. By counting the particle number of each size, the relation between laser power and particle diameter becomes much clearer (Figs.…”

Review of Experimental Setups for Plasmonic Photocatalytic Reactions

“…Energy transformation in plasmonic material sensing (i.e., chemical and biosensing [136][137][138][139][140][141] and SERS [119][120][121][122]) resembles that in plasmonic photocatalytic reactions. Therefore, methods of obtaining larger or enhanced signal readings in plasmonic sensing resemble to a higher enhanced processing efficiency in plasmonic photocatalytic reactions.…”

Vertical split-ring resonator based nanoplasmonic sensor

“…14 The motivation of exploring metamaterials for the sensing application is the potential for achieving high sensitivity. [15][16][17][18] To this end, metamaterials require to possess strong plasmon resonance features that are sensitive to environment change. 19,20 The split-ring resonator (SRR) is such a metal structure that is typically used as a building block for metamaterials because of its strong resonance accompanied with strong field enhancement within the SRR gap.…”