Enhanced near-infrared plasmonic sensing chips with ultra-thin optical absorption nanolayer fabricated by cross-beam pulsed laser deposition (CB-PLD)

Nurzad Zakirov; Shaodi Zhu; Amine Zitouni; Zahra Shayegan; Etienne Charette; Boris Le Drogoff; Mohamed Chaker; Shuwen Zeng

doi:10.1117/12.3015073

20 June 2024 Enhanced near-infrared plasmonic sensing chips with ultra-thin optical absorption nanolayer fabricated by cross-beam pulsed laser deposition (CB-PLD)

Nurzad Zakirov, Shaodi Zhu, Amine Zitouni, Zahra Shayegan, Etienne Charette, Boris Le Drogoff, Mohamed Chaker, Shuwen Zeng

Author Affiliations +

Proceedings Volume 12999, Optical Sensing and Detection VIII; 129990S (2024) https://doi.org/10.1117/12.3015073
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

Plasmonic biosensing is an optical technique that based on refractive index change when the target molecules interact with the sensing surface. Main plasmonic material used in this type of biosensors is gold. Our work is dedicated to design a novel sensing SPR chip with vanadium dioxide (VO2) nanolayer, known for its unique insulator-to-metal phase transition in the near-infrared region. VO2 thin film is deposited using Cross-Beam Pulsed Laser Deposition (CB-PLD) method and gold layer deposition is performed by sputtering. By employing the VO2 nanolayer, we create a highly responsive biosensing interface (with a much-improved sensitivity and also a wide dynamic measurement range). The VO2 layer's ability to modulate the refractive index enables precise control of the excited plasmon resonance. This interaction results in enhancing sensitivity and the capability to detect low-concentration analytes with high accuracy.

Conference Presentation

Citation Download Citation

Nurzad Zakirov, Shaodi Zhu, Amine Zitouni, Zahra Shayegan, Etienne Charette, Boris Le Drogoff, Mohamed Chaker, and Shuwen Zeng "Enhanced near-infrared plasmonic sensing chips with ultra-thin optical absorption nanolayer fabricated by cross-beam pulsed laser deposition (CB-PLD)", Proc. SPIE 12999, Optical Sensing and Detection VIII, 129990S (20 June 2024); https://doi.org/10.1117/12.3015073

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