Related Experiment Video
Updated: Sep 18, 2025
Author Spotlight: Advancements and Applications in Nanoparticle Synthesis Through Laser Ablation in Liquids
Published on: June 16, 2023
High Sensitivity SERS Substrate with Femtosecond Laser-Printed Nanohole Arrays.
Yunfang Zhang1,2, Dejun Liu1,2, Han Liu1,2
1Shenzhen Key Laboratory of Photonic Devices and Sensing Systems for Internet of Things, Guangdong and Hong Kong Joint Research Centre for Optical Fibre Sensors, State Key Laboratory of Radio Frequency Heterogeneous Integration, Shenzhen University, Shenzhen 518060, China.
Researchers developed a new method for creating uniform surface-enhanced Raman scattering (SERS) substrates using laser technology and silver nanoparticles. This technique ensures high reproducibility and sensitivity for SERS applications.
Area of Science:
- Nanotechnology
- Materials Science
- Spectroscopy
Background:
- Surface-Enhanced Raman Scattering (SERS) requires uniform and reproducible substrates for sensitive detection.
- Existing fabrication methods often struggle with consistency and scalability.
Purpose of the Study:
- To present a novel, repeatable method for fabricating uniform SERS substrates.
- To optimize nanohole array dimensions and silver nanoparticle film thickness for enhanced SERS performance.
Main Methods:
- Fabrication of nanohole arrays using femtosecond laser-induced two-photon polymerization (TPP).
- Deposition of a 9 nm silver nanoparticle film onto the nanohole arrays.
- Optimization of nanohole diameter and silver film thickness.
Main Results:
- Achieved a limit of detection of 10-10 M for rhodamine 6G.
- Obtained analytical enhancement factors up to 3.5 × 104.
- Demonstrated high reproducibility with a relative standard deviation (RSD) of 5.5% for a characteristic peak at 1361 cm-1.
Conclusions:
- The proposed method successfully fabricates repeatable and uniform SERS substrates.
- The optimized substrates exhibit excellent sensitivity and reproducibility.
- This technique offers a promising approach for advanced SERS applications.
