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31 May 2023 Impact of Au morphology on optical fiber-based sensor (Conference Presentation)
Debanita Das, Anuj Kumar Singh, Anshuman Kumar, Alison Funston
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Proceedings Volume 12572, Optical Sensors 2023; 125720U (2023) https://doi.org/10.1117/12.2665413
Event: SPIE Optics + Optoelectronics, 2023, Prague, Czech Republic
Abstract
Conventional sensing techniques including electrochemical, voltammetric, colorimetry, and non-enzymatic are widely used for the detection of chronic diseases. However, such techniques suffer from poor selectivity, complexity, low sensitivity, monofunctional, and expensive development procedures, which limits its widespread and accessibility across the medical field. Replacing these techniques with localized surface plasmon resonance (LSPR) based optical sensors can be much more beneficial as these are real-time, label-free devices, highly reproducible, cheap, and hold higher sensitivity to changes in the refractive index of samples. The plasmonic nanoparticles like - Ag, Au and Cu are highly sensitive to their local environment and undergoes spectral response due to their strong scattering or absorption. The easy monitoring of these light signals paves the way for its utilization in the sensor market. This work studies the influence of morphology of Au on optical tapered fibers for sensing applications.
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Debanita Das, Anuj Kumar Singh, Anshuman Kumar, and Alison Funston "Impact of Au morphology on optical fiber-based sensor (Conference Presentation)", Proc. SPIE 12572, Optical Sensors 2023, 125720U (31 May 2023); https://doi.org/10.1117/12.2665413
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KEYWORDS
Gold
Optical fibers
Sensors
Plasmonics
Nanoparticles
Sensor performance
Nanolithography
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