Wavelength-selective light sensor fabricated on a photoactive azobenzene film

Yazan Bdour; Carlos Escobedo; Ribal Georges Sabat

doi:10.1117/12.2610973

18 April 2022 Wavelength-selective light sensor fabricated on a photoactive azobenzene film

Yazan Bdour, Carlos Escobedo, Ribal Georges Sabat

Author Affiliations +

Proceedings Volume 12045, Nano-, Bio-, Info-Tech Sensors, and Wearable Systems 2022; 1204503 (2022) https://doi.org/10.1117/12.2610973
Event: SPIE Smart Structures + Nondestructive Evaluation, 2022, Long Beach, California, United States

Abstract

Chirped-pitch crossed surface relief gratings (CP-CSRGs) were fabricated on photoactive azobenzene thin films using a simple two-step procedure. The resulting gratings had a constant pitch in one direction and a varying (chirped) pitch in the orthogonal direction. They were coated with silver and tested for their ability to excite surface plasmon resonance (SPR). It was observed that incident light can be transmitted or blocked on different locations of the CP-CSRG device only as a function of the light’s wavelength. These SPR-based sensors were used to detect changes in the refractive index of aqueous sucrose solutions and a maximum sensitivity of 778.6 nm/RIU was obtained.

Conference Presentation

Citation Download Citation

Yazan Bdour, Carlos Escobedo, and Ribal Georges Sabat "Wavelength-selective light sensor fabricated on a photoactive azobenzene film", Proc. SPIE 12045, Nano-, Bio-, Info-Tech Sensors, and Wearable Systems 2022, 1204503 (18 April 2022); https://doi.org/10.1117/12.2610973

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