Plasmonic spectrum on 1D and 2D periodic arrays of rod-shape metal nanoparticle pairs with different core patterns for biosensor and solar cell applications

Abstract

Simulations of surface plasmon resonance (SPR) on the near field intensity and absorption spectra of one-dimensional (1D) and two-dimensional (2D) periodic arrays of rod-shape metal nanoparticle (MNP) pairs using the finite element method (FEM) and taking into account the different core patterns for biosensor and solar cell applications are investigated. A tunable optical spectrum corresponding to the transverse SPR modes is observed. The peak resonance wavelength (λ res ) can be shifted to red as the core patterns in rod-shape MNPs have been changed. We find that the 2D periodic array of core-shell MNP pairs (case 2) exhibit a red shifted SPR that can be tuned the gap enhancement and absorption efficiency simultaneously over an extended wavelength range. The tunable optical performances give us a qualitative idea of the geometrical properties of the periodic array of rod-shape MNP pairs on SPRs that can be as a promising candidate for plasmonic biosensor and solar cell applications.

Simultaneous realization of high sensing sensitivity and tunability in plasmonic nanostructures arrays

“…4 c and d . According to our previous literature, the longer metal nanorod will produce more standing waves on the metal nanorod 45 , 46 . When the height (or length) of the proposed PNS is much shorter (i.e., h = 150 nm) than that of the incident EM wave, it is difficult to form more standing waves on the surface of the PNS, and the near-field distribution on the surface of the PNS originates mainly from the evanescent wave that propagates in a direction parallel to the interface between the metal and the dielectric medium.…”

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.…”

“…Size dependence is typically valuable in plasmonic responses and SERS [111]. For large-scale material sensing or photocatalytic reactions, array or condensed random structures can achieve relatively high light absorption [141][142][143] or can even be perfect absorbers [144,145]. Furthermore, array structures help in SERS [26,27] and ultrafast real-time bioassays [140].…”

Polarization-Insensitive Hybrid Plasmonic Waveguide Design for Evanescent Field Absorption Gas Sensor

“…Moreover, the ability of these WGs to confine light is limited by diffraction. Plasmonic WGs propagate the surface plasmons wave at the dielectric-metal interface which is evanescently confined in the direction perpendicular to the propagation [20][21][22]. These WGs can confine the light to the subwavelength region as their light confining ability is not affected by the diffraction limit [23].…”