New PDF release: Active plasmonic nanomaterials

By Luciano De Sio

ISBN-10: 9814613002

ISBN-13: 9789814613002

ISBN-10: 9814613010

ISBN-13: 9789814613019

Plasmonic nanoparticles (NPs) symbolize a very good category of nanomaterials that experience the aptitude to localize gentle on the nanoscale by way of exploiting a phenomenon referred to as localized plasmon resonance. The booklet is aimed toward reviewing fresh efforts dedicated to make the most of NPs in lots of study fields, resembling photonics, optics, and plasmonics. during this framework, specific curiosity is dedicated to active plasmonics, a fairly large idea that exhibits these functions within which NPs play an energetic function, like cognizance of gain-assisted skill, usage of NPs embedded in liquid crystalline and versatile fabrics, and exploitation of renewable solar power. The publication places jointly contributions from impressive learn teams within the box of plasmonic nanomaterials around the globe. It offers easy and complex wisdom within the fields of plasmonics, photonics, and optics and covers study on plasmonic nanomaterials for purposes starting from plasmonics to photonics.

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The quasi-static approach can be followed, and the presence of gain can be incorporated by replacing the real dielectric constant εm of the insulator surrounding the sphere with a complex dielectric function ε2 (ω). Using this straightforward analytical model, Lawandy has shown that the presence of gain, expressed by [ε2 ] < 0, can lead to a significant strengthening of the plasmon resonance [Lawandy (2004)]. 95), the imaginary part of ε2 can, in fact, lead to a complete cancellation of all the terms in the denominator of α and thus to an infinite amplitude of the resonant polarizability.

Aggregation causes a coupling of the Au NPs’ plasma modes, which results in a red-shift and broadening of the longitudinal plasma resonance in the optical spectrum [136]. 5 K to 300 K. Such temperature dependence is more pronounced with decreasing NP size. The temperature dependence of the electron–phonon scattering is partially compensated by a thermal lattice contraction of the NPs © 2016 by Taylor & Francis Group, LLC May 27, 2015 10:53 PSP Book - 9in x 6in 42 Synthesis and Surface Engineering of Plasmonic Nanoparticles with decreasing temperature.

This chapter will give a brief overview of the factors affecting the plasmon absorption and will report on the most recent advances in metal NPs size/shape-controlled syntheses (both in aqueous and organic environment) and post-synthetic surface modification procedures, in order to obtain original candidate structures for plasmonic applications. 2 Experimental Parameter Affecting Plasmon Absorption Frequency and intensity of a plasmon resonance are primarily determined by (a) the intrinsic dielectric property of a given metal, (b) the dielectric constant of the medium in contact with the metal, and (c) the pattern of surface polarization.

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Active plasmonic nanomaterials by Luciano De Sio

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