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Updated: Feb 9, 2026

Engineering Antiviral Agents via Surface Plasmon Resonance
Published on: June 14, 2022
Dispersion engineering with plasmonic nano structures for enhanced surface plasmon resonance sensing
Pankaj Arora1, Eliran Talker1, Noa Mazurski1
1Department of Applied Physics, The Benin School of Engineering and Computer Science, The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel.
We enhanced Surface Plasmon Resonance (SPR) sensing using plasmonic nanogratings. This novel approach significantly boosts sensor performance and stability, offering a promising tool for detecting various analytes.
Area of Science:
- Plasmonics
- Nanotechnology
- Optical Sensing
Background:
- Surface Plasmon Resonance (SPR) is a label-free optical technique used for detecting molecular interactions.
- Conventional SPR sensors face limitations in sensitivity and stability.
- Plasmonic nanostructures offer potential for enhancing SPR-based sensing.
Purpose of the Study:
- To numerically and experimentally demonstrate enhanced SPR sensing using plasmonic nanogratings.
- To investigate the effect of nanogratings on the plasmonic response and SPR characteristics.
- To evaluate the performance of the integrated SPR-nanograting device as a sensor.
Main Methods:
- Numerical simulations and experimental fabrication of plasmonic nanogratings.
- Integration of nanogratings into a prism-based Kretschmann configuration.
- Characterization of SPR response, Q factor, and angular dependence.
Main Results:
- Plasmonic nanogratings enhanced the Q factor by 3-4 times compared to conventional SPR.
- Negligible wavelength shift observed with increasing incident angles for nanograting configuration.
- Demonstrated strong field enhancement and control over the dispersion relation.
Conclusions:
- The integrated SPR-nanograting device shows great promise for enhanced sensing applications.
- Dispersion engineering via nanogratings significantly improves SPR sensor performance.
- The device is suitable for detecting various types of analytes with improved stability.
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