Study of optical properties of gold nanoparticles embedded in normal, benign, and malignant breast tissues

We have developed an analytical method to describe the optical properties of nanoparticles, whose results are in agreement with the observed experimental behavior according to the size of the nanoparticle under analysis. Our considerations to describe plasmonic absorption and dispersion are based on the combination of the two-level molecular system and the two-dimensional quantum box models. Employing the optical stochastic Bloch equations, we have determined the system's coherence, from which we have calculated expressions for the absorption coefficient and refractive index. The innovation of this methodology is that it allows us to take into account the solvent environment, which induce quantum effects not considered by classical treatments.

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Optical properties of nanostructured carbon and gold nanoparticle hybrids

MRS Proceedings ◽

10.1557/opl.2014.575 ◽

2014 ◽

Vol 1700 ◽

pp. 79-82 ◽

Cited By ~ 3

Author(s):

Yuan Li ◽

Nitin Chopra

Keyword(s):

Gold Nanoparticles ◽

Optical Properties ◽

Hot Spots ◽

Simulation Method ◽

Dipole Approximation ◽

Multilayer Graphene ◽

Nanostructured Carbon ◽

Near Surface ◽

Scattering Effects ◽

Dda Method

ABSTRACTWe report simulation of optical properties of hybrid geometry comprised of multilayer graphene shell encapsulated gold nanoparticles loaded with carbon nanotubes. The discrete dipole approximation (DDA) method was employed. The results indicated that the optical properties of encapsulated gold nanoparticles were not suppressed by the carbon material coating. Furthermore, low scattering effects were also observed. The simulation method helped visualize the near-surface normalized electric field, which is directly related to the intensity of hot spots on the surface of these hybrid nanoarchitectures.

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Optical Properties of Star-Shaped Gold Nanoparticles

Nano Letters ◽

10.1021/nl052409y ◽

2006 ◽

Vol 6 (4) ◽

pp. 683-688 ◽

Cited By ~ 820

Author(s):

Colleen L. Nehl ◽

Hongwei Liao ◽

Jason H. Hafner

Keyword(s):

Gold Nanoparticles ◽

Optical Properties

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EELS mapping of surface plasmons in star-shaped gold nanoparticles: morphological behaviour of optical properties from star to sphere

EMC 2008 14th European Microscopy Congress 1–5 September 2008, Aachen, Germany ◽

10.1007/978-3-540-85156-1_205 ◽

2009 ◽

pp. 409-410

Author(s):

S. Mazzucco ◽

O. Stéphan ◽

M. Kociak ◽

C. Colliex

Keyword(s):

Gold Nanoparticles ◽

Optical Properties ◽

Surface Plasmons

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Nanogold-based materials in medicine: from their origins to their future

Nanomedicine ◽

10.2217/nnm-2021-0265 ◽

2021 ◽

Author(s):

Tânia Ferreira-Gonçalves ◽

David Ferreira ◽

Hugo A Ferreira ◽

Catarina P Reis

Keyword(s):

Gold Nanoparticles ◽

Optical Properties ◽

Potential Application ◽

Biomedical Applications ◽

Production Method ◽

Therapeutic Approaches ◽

Production Methods ◽

Research Fields

The properties of gold-based materials have been explored for centuries in several research fields, including medicine. Multiple published production methods for gold nanoparticles (AuNPs) have shown that the physicochemical and optical properties of AuNPs depend on the production method used. These different AuNP properties have allowed exploration of their usefulness in countless distinct biomedical applications over the last few years. Here we present an extensive overview of the most commonly used AuNP production methods, the resulting distinct properties of the AuNPs and the potential application of these AuNPs in diagnostic and therapeutic approaches in biomedicine.

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