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arXiv · 2411.12356

Design of Dual-Band Plasmonic Absorber for Biomedical Sensing and Environmental Monitoring

Ayon Sarker·Sajid Muhaimin Choudhury
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Abstract

This study introduces a dual-band plasmonic absorber designed for simultaneous sensing applications in the near-infrared (NIR) and mid-infrared (MIR) regions. The absorber, composed of silver nanostructures on a metal plate with a dielectric spacer, exhibits a combination of localized and gap surface plasmon resonances, resulting in two distinct absorption peaks in theoretical analysis based on the FDTD method. Numerical simulations also validate the sensor's high refractive index sensitivity, enabling the detection of biomolecules, proteins, viruses, and various solutes in aqueous solutions. The absorber demonstrates significant resonance shifts, making it a promising candidate for environmental monitoring, medical diagnostics, and chemical sensing.

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Ayon Sarker, Sajid Muhaimin Choudhury. 2024-11-19. Design of Dual-Band Plasmonic Absorber for Biomedical Sensing and Environmental Monitoring. https://arxiv.org/abs/2411.12356

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