Related Experiment Video
Updated: Nov 19, 2025
09:09
A Label-free Technique for the Spatio-temporal Imaging of Single Cell Secretions
Published on: November 23, 2015
8.8K
A Potential Plasmonic Biosensor Based Asymmetric Metal Ring Cavity with Extremely Narrow Linewidth and High
Tianping Xu1, Zhaoxin Geng2,3, Yue Su3
1College of Science, Minzu University of China, Beijing 100081, China.
Sensors (Basel, Switzerland)
|January 27, 2021
Summary
This study presents a novel plasmonic refractive index sensor with an asymmetric laminated structure. Its design offers high sensitivity and multi-mode sensing capabilities for diverse biosensing applications.
Area of Science:
- Plasmonics
- Nanophotonics
- Biosensing
Background:
- Plasmonic sensors offer high sensitivity for detecting refractive index changes.
- Achieving multi-mode sensing with narrow linewidth and high absorption remains a challenge.
Purpose of the Study:
- To theoretically explore a high-sensitivity refractive index sensor structure with narrow linewidth and high absorption.
- To investigate the potential of an asymmetric laminated structure for multi-mode biosensing.
Main Methods:
- Theoretical analysis of a sensor structure comprising a periodic asymmetric ring cavity array, spacer layer, and metal thin-film layer.
- Optimization of sensor performance by adjusting structural parameters using simulation data.
Main Results:
- The proposed sensor structure exhibits six resonance modes across the visible to near-infrared spectrum.
- The asymmetric laminated structure demonstrates good sensing performance and narrow linewidth with high absorption.
Conclusions:
- The developed sensor structure shows significant potential for multi-mode and multi-component sensing when integrated with microfluidic technology.
- This plasmonic sensor design holds promise for advanced applications in the field of biosensing.
