Multipole plasmons in gold nanorods: scaling properties and dependence on the particle size, shape, orientation, and dielectric environment

2007 ◽  
Author(s):  
Boris N. Khlebtsov ◽  
Andrei G. Melnikov ◽  
Nikolai G. Khlebtsov
Keyword(s):  
Particle Size ◽  
Gold Nanorods ◽  
Scaling Properties ◽  
Dielectric Environment

Second Harmonic Generation-based Nonlinear Plasmonic RI-Sensing in Solution: Pivotal Role of Particle Size

2021 ◽  
Author(s):  
Mrigank Verma ◽  
Manabendra Chandra
Keyword(s):  
Particle Size ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Gold Nanorods ◽  
Second Harmonic ◽  
Solution Phase ◽  
Pivotal Role

Here, we demonstrate the utility of the second harmonic generation (SHG) for refractometric sensing in the solution phase. We employ an aqueous colloid of gold nanorods as our sensors and,...

scholarly journals Correction: Influence of particle size and dielectric environment on the dispersion behaviour and surface plasmon in nickel nanoparticles

2017 ◽  
Vol 19 (27) ◽  
pp. 18099-18099
Author(s):  
Vikash Sharma ◽  
Chanderbhan Chotia ◽  
Tarachand Tarachand ◽  
Vedachalaiyer Ganesan ◽  
Gunadhor S. Okram
Keyword(s):  
Particle Size ◽  
Surface Plasmon ◽  
Nickel Nanoparticles ◽  
Chem Phys ◽  
Phys Chem Chem Phys ◽  
Dielectric Environment

Correction for ‘Influence of particle size and dielectric environment on the dispersion behaviour and surface plasmon in nickel nanoparticles’ by Vikash Sharma et al., Phys. Chem. Chem. Phys., 2017, 19, 14096–14106.

Influence of particle size and dielectric environment on the dispersion behaviour and surface plasmon in nickel nanoparticles

2017 ◽  
Vol 19 (21) ◽  
pp. 14096-14106 ◽  
Author(s):  
Vikash Sharma ◽  
Chanderbhan Chotia ◽  
Tarachand Tarachand ◽  
Vedachalaiyer Ganesan ◽  
Gunadhor S. Okram
Keyword(s):  
Particle Size ◽  
Zeta Potential ◽  
Surface Plasmon ◽  
Nickel Nanoparticles ◽  
Ni Nanoparticles ◽  
Uv Visible ◽  
Dielectric Environment

Schematic showing the effect of the dielectric environment on the zeta potential and UV-visible absorbance of monodispersed Ni nanoparticles.

Size dependent biological profiles of PEGylated gold nanorods

2014 ◽  
Vol 2 (36) ◽  
pp. 6072-6080 ◽  
Author(s):  
Francesca Tatini ◽  
Ida Landini ◽  
Federica Scaletti ◽  
Lara Massai ◽  
Sonia Centi ◽  
...  
Keyword(s):  
Particle Size ◽  
Gold Nanorods ◽  
Blood Compatibility ◽  
Size Dependent

The interactions with proteins, cytotoxicity and blood compatibility of PEGylated gold nanorods are reviewed as a function of particle size.

Poly(N-isopropylacrylamide)-coated gold nanorods mediated by thiolated chitosan layer: thermo-pH responsiveness and optical properties

e-Polymers ◽  
2018 ◽  
Vol 18 (2) ◽  
pp. 163-174 ◽  
Author(s):  
Reynaldo Esquivel ◽  
Iván Canale ◽  
Maricela Ramirez ◽  
Pedro Hernández ◽  
Paul Zavala-Rivera ◽  
...  
Keyword(s):  
Particle Size ◽  
Gold Nanorods ◽  
Functional Materials ◽  
Polymer Coatings ◽  
Polymeric Coating ◽  
Solution Temperature ◽  
Core Shell ◽  
Hexadecyltrimethylammonium Bromide ◽  
Thiolated Chitosan ◽  
Vis Spectroscopy

AbstractA core-shell of colloidal metal-responsive polymer provides an innovative model in functional materials. These core-shell nanocomposites offer the possibility to control some properties, such as particle size, surface plasmon resonance and morphology. In this research, we demonstrate the successful synthesis and functionality of gold nanorods (GNR) coated with the polymers chitosan (Ch) and poly(N-isopropylacrylamide) (PNIPAM). The polymer coatings are performed using a two-step method. First, GNR were coated with a thiolated chitosan (GNR-Ch) by replacing hexadecyltrimethylammonium bromide with a chitosan thiomer. Structural modification of GNR-Ch was monitored by Fourier transform infrared spectroscopy. Then a second polymeric coating was done by in situ free radical polymerization of N-isopropylacrylamide (NIPAM) on GNR-Ch to obtain the nanocomposite GNR-Ch-PNIPAM. The nanocomposite average size was analyzed by dynamic light scattering. The evolution of ζ potentials during the coatings was measured using electrophoretic mobility. GNR-Ch-PNIPAM presented a collapsed structure when heated above the lower critical solution temperature. The particle size of GNR-Ch-PNIPAM was manipulated by changing the pH. Plasmonic properties were evaluated by UV-Vis spectroscopy. Results showed an important blue shift due to the PNIPAM coating thickness. Thermo- and pH-responsive properties of the nanocomposite GNR-Ch-PNIPAM could be used as a drug delivery system.

Spectral Sensitivity of Uniform Arrays of Gold Nanorods to Dielectric Environment

2007 ◽  
Vol 111 (11) ◽  
pp. 4180-4184 ◽  
Author(s):  
Kosei Ueno ◽  
Saulius Juodkazis ◽  
Masahiro Mino ◽  
Vygantas Mizeikis ◽  
Hiroaki Misawa
Keyword(s):  
Spectral Sensitivity ◽  
Gold Nanorods ◽  
Dielectric Environment

Integrated Fractional white Noise as an Alternative to Multifractional Brownian Motion

2007 ◽  
Vol 44 (02) ◽  
pp. 393-408 ◽  
Author(s):  
Allan Sly
Keyword(s):  
Stochastic Process ◽  
Brownian Motion ◽  
White Noise ◽  
Gaussian Process ◽  
Discrete Data ◽  
Hölder Exponent ◽  
Scaling Properties ◽  
Multifractional Brownian Motion ◽  
Local Properties

Multifractional Brownian motion is a Gaussian process which has changing scaling properties generated by varying the local Hölder exponent. We show that multifractional Brownian motion is very sensitive to changes in the selected Hölder exponent and has extreme changes in magnitude. We suggest an alternative stochastic process, called integrated fractional white noise, which retains the important local properties but avoids the undesirable oscillations in magnitude. We also show how the Hölder exponent can be estimated locally from discrete data in this model.

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