Related Experiment Video
Updated: Feb 8, 2026

Visible-light Induced Reduction of Graphene Oxide Using Plasmonic Nanoparticle
Published on: September 22, 2015
Visible light-induced Ag nanoparticle deposited urchin-like structures for enhanced SERS application
Rahul Purbia1, Prem Depan Nayak, Santanu Paria
1Interfaces and Nanomaterials Laboratory, Department of Chemical Engineering, National Institute of Technology, Rourkela, Odisha, India. sparia@nitrkl.ac.in santanuparia@yahoo.com.
Researchers developed a novel method to create silver nanoparticle "urchin-like" structures using visible light. These structures exhibit enhanced electromagnetic fields, leading to highly sensitive surface-enhanced Raman scattering activity for advanced detection.
Area of Science:
- Materials Science
- Nanotechnology
- Spectroscopy
Background:
- Surface-enhanced Raman scattering (SERS) requires nanostructured substrates with high electromagnetic field enhancement.
- Existing fabrication methods can be complex or lack control over nanoparticle arrangement and gap size.
Purpose of the Study:
- To develop a simple and efficient method for fabricating Ag nanoparticle-based structures for SERS applications.
- To investigate the structural properties and SERS activity of the synthesized "urchin-like" architectures.
Main Methods:
- A visible light-induced approach was employed for the fabrication of silver (Ag) nanoparticle deposited "urchin-like" structures.
- Characterization of the synthesized structures, focusing on nanoparticle size and the presence of nanogaps.
Main Results:
- Successfully synthesized "urchin-like" structures with uniformly deposited Ag nanoparticles (approximately 5 nm in size).
- Observed the formation of nanogaps between Ag nanoparticles, crucial for generating enhanced electromagnetic fields.
- Demonstrated high surface-enhanced Raman scattering activity attributed to the unique nanostructure.
Conclusions:
- The visible light-induced method provides a simple and effective route to Ag nanoparticle "urchin-like" structures.
- These structures exhibit significant potential for highly sensitive SERS applications due to localized electromagnetic field enhancement.
More Related Videos
11:16Preparation of Silver-Palladium Alloyed Nanoparticles for Plasmonic Catalysis under Visible-Light Illumination
Published on: August 18, 2020
10:59Author Spotlight: Tracking Electrochemistry on Single Nanoparticles with Surface-Enhanced Raman Scattering Spectroscopy and Microscopy
Published on: May 12, 2023
Related Concept Videos
Induced Electric Fields: Applications
Phase Transitions: Sublimation and Deposition
Light as Energy
Photons
A photon is a discrete electromagnetic particle or bundle of energy. Photons are characterized by their frequency, wavelength, and amplitude, similar to the properties of a wave. Waves with higher frequencies transmit more energy and have shorter wavelengths than longer wavelengths that transmit...
Light Acquisition
The Wave Nature of Light
Self-Evaluation: Self-Enhancement and Self-Verification