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Advances in Gold Nanoparticles for Optical Detection of Nerve Agents by Tawfik A. Khattab; Meram S. Abdelrahman is a book available to read on EtoBox.

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chemical agents using different techniques, such as surface-enhanced Raman scattering (spectroscopic), electrochemical, fluorescent, and colorimetric techniques. Nonetheless, sensing of toxic chemicals by electrochemical and spectroscopic techniques necessitates particular instrumentations, which are sophisticated, time-consuming manipulation of samples, costly, and require trained personnel. Therefore, the search for alternative simple and safe methods is an urgent demand . A critical characteristic of AuNPs is their Plasmon absorbance in both visible and near-IR (near-infrared) electromagnetic ranges. SPR arises from the free electrons located at the metallic surface, which cooperatively resonates with light. Upon irradiation of AuNPs at a wavelength higher than AuNP size, the electronic cloud is subjected to displacement by the nuclei of AuNP to retrieve the Coulomb attraction forces among nuclei and electrons to result in oscillating electrons . At a particular frequency, the electrons oscillate consistently with the light photons leading to the localization of surface Plasmon resonance (LSPR). Nonetheless, ID of AuNPs reaches the wavelength of the incident light with non-spher

Author

Tawfik A. Khattab; Meram S. Abdelrahman

Publisher

Elsevier

Published

2023

Language

EN