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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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Citations
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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

Size dependence of magneto-optical activity in silver nanoparticles with dimensions between 10 and 60 nm studied by MCD spectroscopy.

TL;DR: Size-dependent magneto-optical activity in Ag nanoparticles with dimensions from 10 to 60 nm is demonstrated with magnetic circular dichroism (MCD) spectroscopy and the MCDmax values are inversely correlated with the spectral bandwidth of LSPR extinction.
Journal ArticleDOI

Absorption spectra and near-electric field enhancement effects of Au- and Ag-Fe3O4 dimers

TL;DR: In this article, the authors investigated the influence of metal nanoparticle size, incident wavelength and incident polarization angle on the enhancement factor of Au and Ag-Fe3O4 dimers.
Journal ArticleDOI

Reversible Modulation of Surface Plasmons in Gold Nanoparticles Enabled by Surface Redox Chemistry

TL;DR: Switchable surface redox chemistry is demonstrated in gold@iron/iron oxide core-shell nanoparticles with ambient oxidation and plasmon-mediated reduction to modulate the oxidation state of shell layers to provide a unique mechanism for controlling the plasMonic properties and surface chemistry of small metal nanoparticles.
Journal ArticleDOI

Chemically synthesized Au-Fe 3 O 4 nanostructures with controlled optical and magnetic properties

TL;DR: Au-Fe3O4 dumbbell-like, flower-like and core-shell nanostructures with different sizes ranging between 4-15 nm have been synthesized via the thermal decomposition of iron pentacarbonyl and reduction of gold salts.
Journal ArticleDOI

Hybrid nanoparticles for magnetic and plasmonic hyperthermia

TL;DR: The present manuscript reports the use of hybrid magneto-plasmonic nanoparticles (HMPNPs) based on iron oxide nanoparticles and Au nanorods as colloidal nanoheaters, and analyzes the heating power of these nanostructures when they were excited with infrared light and AC magnetic fields.
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