Selecting silver nanoshells for colorimetric sensors
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2022
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SBFOTON INTERNATIONAL OPTICS AND PHOTONICS CONFERENCE
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In this work the use of silver nanoshell as a starting point for the establishment of colorimetric sensor platforms, under solar illumination, was evaluated. Mie theory was explored on the analysis of the nanosensor linearity and sensitivity, considering 4 different color spaces and the influence of the nanoshell geometry. A high performance plasmonic nanoplatform was identified. The nanosensor platform based on nanoshells, with 35 nm SiO 2 core radius and 25 nm Ag shell thickness, showed sensitivity values up to 2.78 RIU -1 and linearity higher than 0.96, considering the Hue parameter of the HSV color space. The identification of optimized plasmonic nanoplatforms may extend the use naked-eye colorimetric applications in low-resource environments.
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BALTAR, RAPHAEL M.S.M.; ARAUJO, RENATO E. de; FAROOQ, SAJID. Selecting silver nanoshells for colorimetric sensors. In: SBFOTON INTERNATIONAL OPTICS AND PHOTONICS CONFERENCE, October 13-15, 2022, Recife, PE. Proceedings... Piscataway, NJ, USA: IEEE, 2022. DOI: 10.1109/SBFotonIOPC54450.2022.9992430. Disponível em: http://repositorio.ipen.br/handle/123456789/33665. Acesso em: 24 Apr 2024.
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