Related Experiment Video
Updated: Jan 22, 2026

Optical Trapping of Plasmonic Nanoparticles for In Situ Surface-Enhanced Raman Spectroscopy Characterizations
Published on: June 23, 2022
Gold nanoparticle superlattice monolayer with tunable interparticle gap for surface-enhanced Raman spectroscopy
Huayang Wang1, Ling Yao1, Xi Mao1
1Key Laboratory of Materials Chemistry for Energy Conversion and Storage (HUST) of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China. kewang@hust.edu.cn jtzhu@mail.hust.edu.cn.
Abstract:
Taking into account the near-field coupling interaction, non-close-packed two-dimensional nanoparticle (NP) assemblies with centimeter-scale and tunable interparticle gap (d) have attracted considerable attention due to their remarkable physicochemical properties, which show a wide range of potential applications, e.g., surface-enhanced Raman spectroscopy (SERS) active substrates. In the present work, we demonstrate that an Au NP superlattice monolayer (SM) with tunable d, playing a critical role in governing SERS activity, can be created via a rapid liquid-liquid interfacial assembly strategy. We show that the enhancement factor (EF) of SERS has an approximate 1/d2.4 dependence on the gap of Au NP SM assemblies. This work provides a platform for the rational design of plasmon-enhanced spectroscopy active substrates for theoretical studies and for various applications, including SERS-active substrates, photoelectronic devices, biosensors and others.
More Related Videos
10:59Author Spotlight: Tracking Electrochemistry on Single Nanoparticles with Surface-Enhanced Raman Scattering Spectroscopy and Microscopy
Published on: May 12, 2023
11:44Surface Enhanced Raman Spectroscopy Detection of Biomolecules Using EBL Fabricated Nanostructured Substrates
Published on: March 20, 2015
Related Concept Videos
Raman Spectroscopy: Overview
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
Raman Spectroscopy Instrumentation: Overview
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
Gap Junctions
Gap Junctions
Self-Evaluation: Self-Enhancement and Self-Verification
Bioavailability Enhancement: Drug Solubility Enhancement