The moveable “hot spots” effect in an Au nanoparticles–Au plate coupled system

Nanoscale ◽  
2020 ◽  
Vol 12 (46) ◽  
pp. 23789-23798
Author(s):  
Ying Sun ◽  
Chenjie Zhang ◽  
Yaxian Yuan ◽  
Minmin Xu ◽  
Jianlin Yao
Keyword(s):  
Hot Spots ◽  
Au Nanoparticles ◽  
Particle Surface ◽  
Coupled System ◽  
Surface Mode ◽  
System P ◽  
Coupling Mode ◽  
Excitation Line

The excitation line dependent transformation of the coupling mode from the “particle–particle” to the “particle–surface” mode was observed using an Au nanoparticles and plate coupled system.

Observing the dynamic “hot spots” on two-dimensional Au nanoparticles monolayer film

2017 ◽  
Vol 53 (50) ◽  
pp. 6788-6791 ◽  
Author(s):  
Chenjie Zhang ◽  
Enming You ◽  
Qi Jin ◽  
Yaxian Yuan ◽  
Minmin Xu ◽  
...  
Keyword(s):  
Hot Spots ◽  
Au Nanoparticles ◽  
Interparticle Spacing ◽  
Two Dimensional ◽  
Monolayer Film

Interparticle spacing was controlled by evaporating water on 2D Au nanoparticles arrays.

Hydrogen evolution from water based on plasmon-induced charge separation at a TiO2/Au/NiO/Pt system

2017 ◽  
Vol 19 (46) ◽  
pp. 31429-31435 ◽  
Author(s):  
Kun-Che Kao ◽  
Yoshinori Kuroiwa ◽  
Hiroyasu Nishi ◽  
Tetsu Tatsuma
Keyword(s):  
Hydrogen Evolution ◽  
Methanol Oxidation ◽  
Charge Separation ◽  
Au Nanoparticles ◽  
System P ◽  
Water Based ◽  
Induced Charge

Plasmonic Au nanoparticles inject electrons into TiO2 and reduce water to hydrogen at a Pt cathode. Positive charges left in the Au nanoparticles are extracted by NiO and used for methanol oxidation.

Photochromic control of a plasmon–quantum dots coupled system

Nanoscale ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 258-265 ◽  
Author(s):  
Gwénaëlle Lamri ◽  
Artur Movsesyan ◽  
Edite Figueiras ◽  
Jana B. Nieder ◽  
Jean Aubard ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Light Emission ◽  
Coupled System ◽  
System P

The enhancement and the control of quantum dot (QD) light emission is a challenge for many applications.

Monolithic carbon foam-supported Au nanoparticles with excellent catalytic performance in a fixed-bed system

2017 ◽  
Vol 41 (24) ◽  
pp. 15027-15032 ◽  
Author(s):  
Xiang Liu ◽  
Yan Li ◽  
Zheng Xing ◽  
Xiaohua Zhao ◽  
Ningning Liu ◽  
...  
Keyword(s):  
Au Nanoparticles ◽  
Fixed Bed ◽  
Carbon Foam ◽  
Catalytic Performance ◽  
System P ◽  
Fixed Bed System ◽  
Excellent Catalytic Performance

A MCF/Au monolith can be innovatively utilized to construct a fixed-bed system, which exhibits exceptional reduction performance for 4-nitrophenol.

Mono- and di-nuclear nickel(ii) complexes derived from NNO donor ligands: syntheses, crystal structures and magnetic studies of dinuclear analogues

RSC Advances ◽  
2016 ◽  
Vol 6 (42) ◽  
pp. 36020-36030 ◽  
Author(s):  
Pravat Ghorai ◽  
Anindita Chakraborty ◽  
Anangamohan Panja ◽  
Tapan Kumar Mondal ◽  
Amrita Saha
Keyword(s):  
Dft Calculations ◽  
Crystal Structures ◽  
Coupled System ◽  
Donor Ligands ◽  
Magnetic Studies ◽  
Ferromagnetic Interaction ◽  
System P

Ferromagnetic interaction in dinickel(ii) complexes, supported by DFT calculations, is reported. Bis(phenoxo)-bridged compound is only the second example of ferromagnetically coupled system.

SERS-BASED AQUEOUS IMMUNOASSAY REALIZED WITH SILICA NANOPARTICLES

2011 ◽  
Vol 20 (01) ◽  
pp. 63-73
Author(s):  
C. Y. SONG ◽  
Z. Y. WANG ◽  
J. YANG ◽  
R. H. ZHANG ◽  
H. WU ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Gold Nanoparticles ◽  
Detection Limit ◽  
Silica Nanoparticles ◽  
Hot Spots ◽  
Au Nanoparticles

A simple, sensitive SERS-based immunoassay realized in aqueous solution is demonstrated with a sandwich immune protocol. In such an immunoassay, antibodies-immobilized silica nanoparticles served as the immune substrate while 4MBA-labeled immuno-Au nanoparticles are used as the immune sensors. According to the TEM images, it is clear that the immune gold nanoparticles are embedded onto the surfaces of the silica nanoparticles specifically after the immunoreaction. As a result, the aggregations of gold nanoparticles have been formed with SERS-active "hot spots" on the dimers or multimers. The SERS results confirm that the method proposed in this paper is an effective way for SERS-based aqueous immunoassay and that the detection limit is as low as 0.1 ng/mL.

Weakened negative effect of Au/TiO2 photocatalytic activity by CdS quantum dots deposited under UV-vis light illumination at different intensity ratios

2016 ◽  
Vol 18 (42) ◽  
pp. 29131-29138 ◽  
Author(s):  
Kang Song ◽  
Xiaohong Wang ◽  
Qun Xiang ◽  
Jiaqiang Xu
Keyword(s):  
Quantum Dots ◽  
Photocatalytic Activity ◽  
Au Nanoparticles ◽  
Light Illumination ◽  
Cds Quantum Dots ◽  
System P ◽  
Negative Effect ◽  
Intensity Ratios

Herein, we have experimentally demonstrated the coexistence of photocatalytic dual opposite roles of Au nanoparticles in a UV-vis light irradiated Au/TiO2 system.

Numerical Simulation of Au Nanoparticles Effect on the PCR Process

2009 ◽  
Vol 131 (7) ◽  
Author(s):  
Chao Chen ◽  
Aili Zhang ◽  
Xiaodong Zhang ◽  
Jun Hu ◽  
Lisa X. Xu
Keyword(s):  
Numerical Simulation ◽  
Polymerase Chain Reaction ◽  
Au Nanoparticles ◽  
Particle Surface ◽  
Underlying Mechanism ◽  
Mass Action ◽  
Chain Reaction ◽  
Numerical Predictions ◽  
Polymerase Chain ◽  
Reaction Equations

Gold nanoparticles have been found to greatly enhance the polymerase chain reaction (PCR) specificity and yield in recent studies. However, the underlying mechanism is still unclear, though different hypotheses have already been proposed. In this study, a mass-action based model has been developed to investigate the effect of Au nanoparticles on the two-round PCR results. The great affinity of Au nanoparticles to the single-stranded DNA is taken into consideration. Each nanoparticle is treated as a bioreactor and/or a selector, around which, reaction equations are coupled to simulate the particle effect, and to investigate the key parameters that might influence such an effect. It is assumed that there exists a competing mechanism between the specific and nonspecific bindings, both in the solution and on the particle surface during the reactions. The numerical predictions accord well to the experimental results, and can be used to explain the Au nanoparticles’ effect on the enhancement of the PCR specificity and efficiency.

Sub-5 nm nanobowl gaps electrochemically templated by SiO2-coated Au nanoparticles as surface-enhanced Raman scattering hot spots

2014 ◽  
Vol 50 (30) ◽  
pp. 3958-3961 ◽  
Author(s):  
Haiqiong Wen ◽  
Lingyan Meng ◽  
Gezhi Kong ◽  
Huimin Yu ◽  
Zhilin Yang ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Hot Spots ◽  
Au Nanoparticles ◽  
Surface Enhanced Raman Scattering ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

Sub-5 nm hot spots for giant SERS made easy: using SiO2-coated Au nanoparticles as a mask for templated electrodeposition.

Controlling dynamic SERS hot spots on a monolayer film of Fe3O4@Au nanoparticles by a magnetic field

2016 ◽  
Vol 152 ◽  
pp. 336-342 ◽  
Author(s):  
Qing-Hua Guo ◽  
Chen-Jie Zhang ◽  
Chao Wei ◽  
Min-Min Xu ◽  
Ya-Xian Yuan ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Hot Spots ◽  
Au Nanoparticles ◽  
Monolayer Film
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