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. 2018 May 11;8:143. doi: 10.3389/fcimb.2018.00143

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Copyright © 2018 Bodelón, Montes-García, Pérez-Juste and Pastoriza-Santos.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Plasmonic and optical properties of metallic nanoparticles. (A) Schematic drawing of the interaction of an electromagnetic radiation with a nanosphere (left) and a nanorod (right). It generates a dipole that oscillates in resonance with the electric field of the incident light as well as a strong confined electric field at the nanoparticle surface. In the case of the metal nanorod two different oscillation modes are observed due to the electron oscillation along the long and short axes. (B) Schematic drawing of the two processes, light scattering and absorption, occurring when a metal nanoparticle interacts with light. (C) Extinction (scattering + absorption) spectra of gold nanospheres (blak), nanostars (blue) and nanorods (red) in water.