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Book ChapterDOI

Magneto-Plasmonic Nanoparticles

TLDR
Magnetoplasmonic nanoparticles encompass in a single nano-entity all the rich science and promising applications of the plasmonics and magnetic nanoworlds as discussed by the authors, and they are excellent benchmark materials to develop and investigate multiresponsive multifunctional nanosystems that now are required in an increasing number of technologies, such as biomedicine, pharmacy, catalysis, optoelectronics and data storage.
Abstract
Magnetoplasmonics nanoparticles encompass in a single nano-entity all the rich science and promising applications of the plasmonics and magnetic nanoworlds. The difficult liaison and a certain incompatibility between plasmonics and magnetic phenomena, due to the different chemical-physical origins and supporting materials, are overcome thanks to the design and synthesis of novel nanostructures. The variations of properties, interactions and synergies of both phenomena and materials demonstrate how rich and surprising the matter is at nanoscale and the promising applications. In fact, we show how not only light and magnetism can interplay but also other phenomena like forces, heat, electric field and chemical interactions, between others, can show synergism. Magnetoplasmonic systems are excellent benchmark materials to develop and investigate multi-responsive multifunctional nanosystems that now are required in an increasing number of technologies, such as biomedicine, pharmacy, catalysis, optoelectronics and data storage.

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Journal Article

Surface-plasmon Opto-magnetic Field Enhancement for All-optical Magnetization Switching

TL;DR: In this paper, the authors use localized surface plasmon resonances to couple light to nanomagnets and achieve significantly higher opto-magnetic field values in comparison to free space light excitation.
Journal ArticleDOI

High Magnetic Field Magneto-optics on Plasmonic Silica-Embedded Silver Nanoparticles

TL;DR: In this article , a large magnetoplasmonic response of silver nanoparticles was demonstrated by performing magnetic circular dichroism spectroscopy at high magnetic fields, revealing a linear response to the magnetic field up to 30 T.
Journal ArticleDOI

Magnetic Circular Dichroism Responses with High Sensitivity and Enhanced Spectral Resolution in Multipolar Plasmonic Modes of Silver Nanoparticles with Dimensions between 90 and 200 nm.

TL;DR: In this paper, magnetic circular dichroism (MCD) spectroscopy was used to investigate magnetoplasmonic responses in higher-order multipolar (quadrupolar and octupolar) modes of Ag nanoparticles.
Journal Article

Impact of Core Dielectric Properties on the Localized Surface Plasmonic Spectra of Gold-Coated Magnetic Core–Shell Nanoparticles B

TL;DR: Extended Mie theory for multilayer particles is used to examine the individual effects of the real and imaginary components of core refractive indices on Au-shell NP plasmonic peaks and shows that the addition of a nonabsorbing polymer layer to the core surface decreases the dampening of the cavity plAsmon and increases LSPR spectral intensity.
References
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Journal ArticleDOI

Ferromagnet or spin glass? Magnetic ordering in Au-Fe alloys

TL;DR: In this article, the authors show that the apparent ferromagnetic behaviour and higher ordering temperatures obtained by previous workers in their magnetization measurements have a simple physical explanation based on the intrinsic properties of the alloys.
Journal ArticleDOI

Plasmon-induced carrier polarization in semiconductor nanocrystals

TL;DR: A robust electron polarization is demonstrated in degenerately doped In2O3 nanocrystals, enabled by non-resonant coupling of cyclotron magnetoplasmonic modes11 with the exciton at the Fermi level and the dynamic control of carrier polarization is readily achieved at room temperature.
Journal ArticleDOI

Direct Synthesis of Water-Dispersible Magnetic/Plasmonic Heteronanostructures for Multimodality Biomedical Imaging.

TL;DR: A general seed-mediated approach to the synthesis of hydrophilic and biocompatible M-Fe3O4 (M = Au, Ag, and Pd) heterodimers, in which the size of metals and Fe3O 4 can be independently regulated in a wide range.
Journal ArticleDOI

Magnetic hyperthermia in brick-like Ag@Fe3O4 core–shell nanoparticles

TL;DR: In this article, specific absorption rate (SAR) measurements were carried out by using the superparamagnetic theory, in which the basic morphology, size and dispersion of sizes played key roles.
Journal ArticleDOI

Hybrid Au–Fe3O4 Nanoparticles: Plasmonic, Surface Enhanced Raman Scattering, and Phase Transition Properties

TL;DR: In this article, the authors reported on the synthesis of hybrid Au-Fe3O4 nanoparticles using a novel one-pot synthesis method that makes use of triethylene glycol as a solvent, a reducing agent, and a stabilizing layer.
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