Theoretical and Experimental Study of Optical Response of Bimetallic Platinum and Gold Nanoparticles: Nanoalloys and Core/Shell Configurations

2021 ◽  
Author(s):  
O. Rocha-Rocha ◽  
M. Cortez-Valadez ◽  
R. García-Llamas ◽  
G. Calderón-Ayala ◽  
P. G. Maní-González ◽  
...  
Keyword(s):  
Experimental Study ◽  
Gold Nanoparticles ◽  
Optical Response ◽  
Core Shell

scholarly journals MXene Core-Shell Nanosheets: Facile Synthesis, Optical Properties, and Versatile Photonics Applications

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1995
Author(s):  
Yunjia Wang ◽  
Shunxiang Liu ◽  
Feng Zhu ◽  
Yiyu Gan ◽  
Qiao Wen
Keyword(s):  
Gold Nanoparticles ◽  
Research Work ◽  
Mode Locking ◽  
Single Frequency ◽  
Core Shell ◽  
Complex Structures ◽  
Facile Synthesis ◽  
Laser Applications ◽  
Saturable Absorbers ◽  
Frequency Laser

In recent years, the transition metal carbonitrides(MXenes) have been widely applied to photoelectric field, and better performance of these applications was achieved via MXene complex structures. In our work, we proposed a MXene core-shell nanosheet composed of a Ti2C (MXene) phase and gold nanoparticles, and applied it to mode-locked and single-frequency fiber laser applications. The optoelectronic results suggested that the performances of these two applications were both improved when MXene core-shell nanosheets were applied. As a result, we obtained a mode-locking operation with 670 fs pulses, and the threshold pump power reached to as low as 20 mW. Besides, a single-frequency laser with the narrowest linewidth of ~1 kHz is also demonstrated experimentally. Our research work proved that MXene core-shell nanosheets could be used as saturable absorbers (SAs) to promote versatile photonic applications.

The Stabilization of Supported Au Nanoparticles in a Highly Sintering Environment using High Surface Free Energy Pt and Ru Cores

2021 ◽  
Author(s):  
Kerry O-Connell ◽  
John R Monnier ◽  
John Regalbuto
Keyword(s):  
Gold Nanoparticles ◽  
Free Energy ◽  
Surface Free Energy ◽  
Au Nanoparticles ◽  
High Surface ◽  
Chemical Environment ◽  
Core Shell

In an effort to stabilize gold nanoparticles which sinter rapidly in a highly corrosive chemical environment, the hydrochlorination of acetylene, bimetallic Ru@Au and Pt@Au core-shell catalysts were prepared by anchoring...

ChemInform Abstract: Modelling the Optical Response of Gold Nanoparticles

ChemInform ◽  
2008 ◽  
Vol 39 (49) ◽  
Author(s):  
Viktor Myroshnychenko ◽  
Jessica Rodriguez-Fernandez ◽  
Isabel Pastoriza-Santos ◽  
Alison M. Funston ◽  
Carolina Novo ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Optical Response

Fabrication and dual imaging properties of quantum dot/silica core-shell particles immobilized with gold nanoparticles

2018 ◽  
Vol 33 (11) ◽  
pp. 737-747
Author(s):  
Ting-ting Li ◽  
Tomoya Inose ◽  
Takahiro Oikawa ◽  
Masayuki Tokunaga ◽  
Keiichiro Hatoyama ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Quantum Dot ◽  
Core Shell ◽  
Silica Core ◽  
Dual Imaging ◽  
Shell Particles ◽  
Imaging Properties

Nanocomposite of polypyrrol and silica rods-gold nanoparticles core–shell as an ammonia sensor

2019 ◽  
Vol 30 (10) ◽  
pp. 105501 ◽  
Author(s):  
Vaibhav Khambalkar ◽  
Shobha Birajdar ◽  
Parag Adhyapak ◽  
Sulabha Kulkarni
Keyword(s):  
Gold Nanoparticles ◽  
Core Shell ◽  
Ammonia Sensor

scholarly journals Effect of Ballistic Electrons on the Optical Response of Hyperbolic Metamaterials

2019 ◽  
Vol 8 (5) ◽  
pp. 23-28
Author(s):  
G. M. Marega ◽  
E. Marega ◽  
B.-H. V. Borges ◽  
A. F. Da Mota
Keyword(s):  
Experimental Study ◽  
Optical Transmission ◽  
Ballistic Transport ◽  
Optical Response ◽  
Analytic Approximation ◽  
Metal Insulator ◽  
Hyperbolic Metamaterials ◽  
Hyperbolic Metamaterial ◽  
Simulated Model ◽  
Metal Insulator Metal

This paper presents a theoretical and experimental study of the effect of ballistic electrons on the optical response of MIM (Metal-Insulator-Metal) like hyperbolic metamaterial structures. The simulated model using standard parameters and the experimental optical transmission show a 20% peak difference due to the presence of ballistic transport in the metal. A semi-analytic approximation based on the Drude's model is used for accurately predicting the optical response of the hyperbolic substrate and plasmon damping in the fabricated metasurfaces.

Optical Detection of Thiol Drugs by Core–Shell Luminous Carbon Dots—Gold Nanoparticles System

Plasmonics ◽  
2018 ◽  
Vol 13 (6) ◽  
pp. 2239-2248 ◽  
Author(s):  
Akansha Mehta ◽  
Amit Mishra ◽  
Soumen Basu
Keyword(s):  
Gold Nanoparticles ◽  
Carbon Dots ◽  
Optical Detection ◽  
Core Shell
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