By Luciano De Sio
Plasmonic nanoparticles (NPs) signify an exceptional type of nanomaterials that experience the potential 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 examine fields, akin to photonics, optics, and plasmonics. during this framework, specific curiosity is dedicated to active plasmonics, a really wide idea that exhibits these functions during which NPs play an energetic function, like consciousness of gain-assisted capability, usage of NPs embedded in liquid crystalline and versatile fabrics, and exploitation of renewable solar power. The ebook places jointly contributions from amazing learn teams within the box of plasmonic nanomaterials world wide. It presents uncomplicated and complex wisdom within the fields of plasmonics, photonics, and optics and covers examine on plasmonic nanomaterials for purposes starting from plasmonics to photonics.
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Additional info for Active plasmonic nanomaterials
Veselago, V. (1968). The electrodynamics of substances with simultaneously negative values of, Soviet Physics Uspekhi 10, pp. 509–513. © 2016 by Taylor & Francis Group, LLC 01-LucianoDeSio-c01 May 27, 2015 10:53 PSP Book - 9in x 6in Chapter 2 Synthesis and Surface Engineering of Plasmonic Nanoparticles Roberto Comparelli,a Tiziana Placido,a,b Nicoletta Depalo,a Elisabetta Fanizza,a,b Marinella Striccoli,a and M. Lucia Curria a CNR-IPCF Istituto per i Processi Chimici e Fisici Sez. Bari, c/o Dip.
A diﬀerent mechanism has been proposed for the formation of Ag NPs via citrate reduction route, since citrate ion is a mild reducing agent for Ag. Thus, ﬁrst citrate reduces a few Ag ions to form Ag seeds. During this process, one of the intermediates formed in the reaction (Ag2+ ) strongly complexes with citrate. This complexation leads to a decrease in the extent of reduction of Ag ion to the zerovalent state. Therefore, due to the presence of residual charge on the seed, the growth of the seed is inhibited after an optimal size, thus preventing further aggregation.
Thus, the actual Au NP stabilizer is dicarboxy acetone resulting from the oxidation of citrate, rather than citrate itself. In addition, the presence of a citrate salt modiﬁes the pH of the system and inﬂuences the size and size distribution of the Au NPs . On this © 2016 by Taylor & Francis Group, LLC 02-LucianoDeSio-c02 45 May 27, 2015 10:53 PSP Book - 9in x 6in 46 Synthesis and Surface Engineering of Plasmonic Nanoparticles basis, nearly monodispersed Au NPs with sizes ranging from 20 nm to 40 nm have been synthesized upon variation of the pH solution .
Active plasmonic nanomaterials by Luciano De Sio