Plasmon‐Exciton Coupling Interaction for Surface Catalytic Reactions

Abstract

In this review, we firstly reveal the physical principle of plasmon-exciton coupling interaction with steady absorption spectroscopy, and ultrafast transition absorption spectroscopy, based on the pump-prop technology. Secondly, we introduce the fabrication of electro-optical device of two-dimensional semiconductor-nanostructure noble metals hybrid, based on the plasmon-exciton coupling interactions. Thirdly, we introduce the applications of plasmon-exciton coupling interaction in the field of surface catalytic reactions. Lastly, the perspective of plasmon-exciton coupling interaction and applications closed this review.

A Highly Sensitive and Stable SERS Sensor for Malachite Green Detection Based on Ag Nanoparticles In Situ Generated on 3D MoS2 Nanoflowers

“…We know that in the SERS enhancement effect, “hot spots” in metal nanostructures cause huge Raman enhancement due to the local electromagnetic field coupling effect of adjacent metal nanostructures. We can effectively adjust the “hot spot” by changing the silver nanoparticle density “hot spot” . We further explored to optimize the SERS performance by controlling the growth of Ag NPs on MoS 2 .…”

“…Using MoS 2 and noble metal composites as SERS substrates, SERS performance can be improved from both chemical enhancement (CM) and electromagnetic enhancement (EM) . The hybrid structure of MoS 2 and noble metal composites may lead to different degrees of exciton plasma coupling and correspondingly enhances light absorption and emission . Two‐dimensional (2D) MoS 2 was once used as a stable inorganic graphene analogue with an intrinsic finite band gap in potential applications in the fields of electronics, optoelectronics, SERS sensors, and biomedical testing.…”

Design of a Liquid-Crystal-Tunable Terahertz Demultiplexer Based on a Metal-Insulator-Metal Waveguide

“…Due to the intrinsic characteristic of FP resonance depicted in Equation 7, the number of periods of the field distribution is the same as the mode number m. In fact, the peak field distribution of mode m under resonance is identical under different bias electric fields of the LC, which depends only on the geometry of the resonator. The demanded resonance of the mode m can be easily achieved by setting the MIM waveguide to operate under its m-th resonant frequency, which is given by Equation (8). From Figure 5, it can be seen that the maximum field of mode m appears at the z-coordinate of p m , which can be expressed by:…”

“…Therefore, tunable materials are playing a key role in developing optic-electric devices that are flexible and easy to use. Graphene is widely used in adjustable devices owing to the diversity of its tunable parameters [6][7][8]. With adjustable permeability by magnetic fields, ferrite is also attractive for devices in the terahertz or optical range [9][10][11].…”

Au Tip-Enhanced Raman Spectroscopy for Catalysis

“…Plasmon-driven surface catalytic reactions can be detected and analyzed in detail using HV-TERS. Moreover, TERS is able to control the dissociation of target molecules by monitoring the pH value of the environment, which is significant for the environment and investigations of dynamic processes [84][85][86].…”