Related Experiment Video
Updated: May 12, 2026
07:20
Trapping of Micro Particles in Nanoplasmonic Optical Lattice
Published on: September 5, 2017
Plasmonic nanohole array sensors fabricated by template transfer with improved optical performance
Peipei Jia1, Hao Jiang, Jayshri Sabarinathan
1Biomedical Engineering Graduate Program, Faculty of Engineering, University of Western Ontario, London, Canada.
Nanotechnology
|April 13, 2013
Summary
We developed a cost-effective nanohole array fabrication method for surface plasmon resonance sensors. This technique enhances biosensing performance, achieving high sensitivity and resolution for label-free detection.
Area of Science:
- Nanotechnology
- Materials Science
- Biosensing
Background:
- Surface plasmon resonance (SPR) sensors are valuable for label-free biosensing.
- Efficient fabrication of nanoscale features on metallic films is crucial for SPR sensor development.
Purpose of the Study:
- To develop a simple, robust, and cost-effective method for fabricating nanohole arrays in gold films.
- To improve the performance of localized surface plasmon resonance (LSPR) sensors through advanced fabrication and analysis.
Main Methods:
- A template-transfer approach was used to create periodic nanohole arrays in optically thick gold films on poly(dimethylsiloxane) substrates.
- Spectral analysis techniques were employed to enhance sensor performance.
Main Results:
- The developed technique simplifies sensor fabrication and reduces device cost.
- The resulting LSPR sensor exhibits a sensitivity of 522 nm/RIU and a resolution of 2 x 10^-5 RIU.
- The sensor's limit of detection for cardiac troponin-I was successfully demonstrated.
Conclusions:
- The template-transfer method offers an efficient fabrication route for nanohole array SPR sensors.
- The improved sensor performance, including high sensitivity and resolution, makes it suitable for sensitive label-free biosensing applications.
- This approach holds promise for widespread adoption in diagnostic and research settings.
