Introduction to Gold Nanosphere

In this review, we summarized the major features of five principal types of AuNPs: gold nanorods, gold nanoshells, gold nanospheres, gold nanocages, and gold nanostars with different sizes, discussed their advantages and disadvantages in PTT.

Methods: Mesenchymal stem cells (MSCs) were labeled with gold nanospheres in vitro and injected through the cornea into the anterior chamber of ex vivo porcine eyes.

Gold nanospheres and nanorods are the promising agents for photoacoustic imaging and photothermal therapy.

The current work aims to compare the in vivo toxicological effects of gold nanospheres versus gold nanostars (of similar ~40 nm diameter and coated with 11-mercaptoundecanoic acid) 24 h after an intravenous administration of a single dose (1.

In this work, we developed a simple, effective fluorescence method to detect Hg2+ by inhibiting core-satellite assemblies of gold nanorods (AuNRs) and gold nanospheres (AuNPs).

In addition, we investigated the effect of the shape and vertices of AuNCs on the refractive index (RI) sensitivity of homogeneous LSPR IFs by comparing with gold nanospheres (AuNSs) of similar size.

In this work, we use surface-enhanced Raman spectroscopy (SERS) of graphene to probe the in-plane near-field enhancement limit in gold nanosphere-on-film nanocavities where different layers of graphene are sandwiched between a gold nanosphere and a gold film.

Gold nanospheres were synthesized using a modified Turkevich method (d = 14±4 nm, λmax = 531 nm), while gold nanodots made of spheres (5±2 nm) and non-spherical nanodots (aspect ratio of 1.

To this aim, gold nanospheres are functionalized with the head-to-tail cyclized-peptide CGisoDGRG (Iso1) and murine IL12.

In this work tetrakis–[(thiopheneethoxy) phthalocyaninato] zinc(II) (1), tetrakis–[(thiopheneethoxy) phthalocyaninato] indium (II) chloride (2), tetrakis [(benzo [d]thiazol-2-yl phenoxy) phthalocyaninato] zinc(II) (3), and tetrakis [(benzo [d]thiazol-2-yl phenoxy)phthalocyaninato] indium (II) chloride (4) were linked to both gold nanospheres (AuNSs) and gold nanotriangles (AuNTs) via Au-S and Au-N (the latter for complexes 3 and 4 only) self assembly.

Gold nanoflowers (GNFs) exhibit stronger light-scattering ability than gold nanospheres (GNSs) with the same diameter, thereby contributing to enhancing the sensitivity of scattering-based sensing method.

Estimates of the characteristics of the terahertz-to-infrared converter based on gold nanospheres (GNSs), which could work in tandem with these sources of THz radiation – as a means of visualization of hidden objects – are also given.

Silver nanoplates (AgNPs) and gold nanospheres (AuNSs) were synthesized as two probes for simultaneous detection.

In this paper, a time-domain finite-difference (FDTD) method is used to simulate the scattering properties of a Janus dimer that a gold nanosphere is putted on the top of a silicon nanorod.

Structure dependent relaxation and recombination dynamics of plasmons in three distinct colloidal plasmonic nanoshapes namely gold nanoflowers (GNF), gold nanopebbles (GNP), gold nanospheres (GNS) and a gold nanoislands film has been investigated with the help of ultrafast pump–probe spectroscopy.

9-times that of gold nanospheres and the accumulation of rods in the subcutaneous adipose tissue, a marker for skin penetration was 1.

In this work, we prepared a novel plasmonic multilayered core-shell-satellite nanostructure (Au@Ag@SiO2-AuNP) consisting of a gold nanosphere with a silver coating core (Au@Ag), an ultrathin continuous silica (SiO2) shell, and a high coverage of gold nanosphere (AuNP) satellites.

Therefore, we describe a bioresponsive nanoplatform that can deliver a HSPA5 inhibitor (pifithrin-μ, PES) and radiosensitizer (gold nanosphere, AuNS), to expand the synergistic photothermal therapy and radiotherapy, as well as to monitor the progression of cancer therapy using computer tomography/magnetic resonance imaging.

Here, we employed DNA-templated strategies to control the chiral self-assembly of achiral chromophores with rationally tuned exciton transitions on gold nanosphere (AuNP) or gold nanorod (AuNR) surfaces.

A gold nanospheres (Au NSs)-enhanced photoacoustic (PA) system has been developed to detect parts per trillion (ppt)-level mercury ion (Hg2+) in aqueous environments, which combines the advantages of the high sensitivity of PA detection and high extinction coefficient of Au NSs.

Therefore, we assessed the viability, multipotency, and photoacoustic activity of gold nanosphere-labeled mesenchymal stem cells after freezing, storage, and thawing for one week, one month, or two months and compared to unlabeled, naïve mesenchymal stem cells which were frozen, stored, and thawed at the same time points.

Our results show formation of gold nanorods GNRs, gold nanoplates GNPs, gold nanospheres GNSs and filaments.

Our method was nicely reproducible with gold nanospheres of different sizes (10, 30, and 68 nm diameter) and gold nanorods (55 × 19 nm), proving to be the simplest and most versatile method to date for the realisation of Janus-type systems based on MCM-41-coated plasmonic nanoparticles.

We present results for the nonlinear optical rectification of an asymmetric GaAs/AlGaAs quantum dot structure coupled to a gold nanosphere under the influence of a strong electromagnetic field.

Gold nanospheres were functionalized with a HIF-1α-binding aptamer via sulfydryl chemistry.

Then, the analytical performances of GNDs and gold nanospheres (GNSs) with the same diameter were compared.

It was observed that the use of a Ficus benjamina leaf aqueous extract via microwave-assisted heating represent a faster, greener and easier method than a conventional heating procedure for the synthesis of silver and gold nanospheres, also leading to narrower nanoparticle size.

Green tea extract was utilized as a reducing agent to reduce gold salts to gold nanospheres.

Our study aims to compare the bubble generation thresholds of gold nanospheres, gold nanorods, and silica-core gold nanoshells with different sizes, resonances, and surface coatings.

81S TNPs is slightly better than other samples synthesized in different reaction conditions, and it is comparable to gold nanospheres.

While mixtures of gold nanospheres around 70 nm and gold nanoplates with width ranging from 100 nm to 1000 nm can be synthesized in about 15 minutes by standard synthesis method using N-2-hydroxyethylpiperazine-N-2-ethanesulphonic acid (HEPES) to reduce Au(III), gold nanoflowers or mixtures of smaller gold nanospheres and nanoplates can be synthesized with the addition of disodium phosphate (Na2HPO4) or monosodium phosphate (NaH2PO4), respectively.

9 times lower than that of the traditional lateral flow assay based on gold nanospheres (61.

The ZnO shell is nucleated on the gold nanosphere core via an ascorbic acid–assisted growth, and the dopant is intercalated uniformly into the shell during the self-assembly phase of the shell formation.

We start by studying silica and gold spheres and conclude with the investigation of the meta-atom, which consists of a silica core sphere onto which gold nanospheres are attached.

The internal surfactant layer of the gold nanospheres was also found to be in dynamic equilibrium.

The filament-induced supercontinuum spectrum in water overlaps with SPRs of gold nanospheres, which further leads to a modification on the Kerr nonlinear refractive index.

A three-dimensional (3D) metamaterial is very easily assembled as a stacked structure with two physical vapor deposition layers, one metallic and one dielectric, and with a spray of gold nanospheres (GNS) on top.

The new bounds are briefly summarized in this paper and then employed in a study concerning the effectiveness of using gold nanospheres as absorbers of the sizes typically used in biomedical applications and plasmonic photothermal therapy.

, gold nanospheres (AuNSs, ∼20 nm in diameter) and gold nanocubes (AuNCs, ∼20 nm in edge length).

Since the 659 nm red emission was only slightly affected by the attached-gold nanospheres, the UCNPs-AuNPs nanocomplex were used to track the MCF-7 breast cancer cells.

Based on the combination of FRET and signals circle amplification, the gold nanospheres functionalized with Y-motif DNA (Y@AuNPs) nanoprobe was utilized for effective ketamine detection with the limit of detection (LOD) down to 3 pg mL−1, which was lower than previously reported.

Nested square 2D lattice of gold nanospheres encased in a film of bismuth-substituted yttrium iron garnet (Bi:YIG) have been studied.

Herein, this work presents an optical microfiber sensor functionalized by a polystyrene@gold nanosphere (PS@Au nanosphere) interface for a synergistic sensitization effect to detect the ultralow CEACAM5 concentrations in serum at the early stage.

The surface plasmon resonances of gold nanospheres and nanorods have been measured as a function of hydrostatic pressure up to 17 GPa in methanol-ethanol 4:1 solvent and up to 10 GPa in paraffin.

To understand the discrepancy between the results on the electron-lattice scattering in different metals reported in the literature (reduction, no dependence or increase with nanoparticle size), we discuss the experimental conditions required for the accurate determination of electron-lattice energy transfer time from time-resolved investigations in the weak and strong excitation regimes and present power-dependent experiments on gold nanospheres in solution.

Then, the gold nanosphere cluster with the diameter of 50 nm and coated using GQD was formed using a facile one-step approach.

EXPERIMENT Gold nanospheres are adsorbed from solution onto pH-responsive, amine-rich polyelectrolyte multilayer (PEM) films that are either directly deposited on a gold substrate or onto an intermediate self-assembled monolayer (SAM) of charged thiols.

In this study, the HEp-2 cell line cells were treated for 24 hours by two shapes of Gold nanoparticles (GNPs): Gold nanospheres (GNSs) and Gold nanorods (GNRs).

But in the case of high concentration, the reduced Hg not only deposited onto the gold surface but also entered into the interior of Au NRs making them change into gold nanospheres (Au NSs) in an irreversible manner due to the alloying effect of gold with Hg.

The purpose of this paper is to focus on therapeutic applications of gold nanoparticles while exploring their various prospectives like cancer therapy, gold nanospheres, gold nanoshells, gold nanorods, gold nanocages and photothermal therapy.

Calculated with the coupled dipole method, a contrast between the forward and backward scattering has been demonstrated with nearly five orders of magnitude for a dimer of gold nanospheres.