Direct imaging of single gold nanoparticle etching: sensitive detection of lead ions

2014 ◽  
Vol 6 (13) ◽  
pp. 4507-4511 ◽  
Author(s):  
Dinggui Dai ◽  
Dong Xu ◽  
Xiaodong Cheng ◽  
Yan He
Keyword(s):  
Gold Nanoparticles ◽  
Real Time ◽  
Gold Nanoparticle ◽  
Detection Method ◽  
Size Reduction ◽  
Direct Imaging ◽  
Real Time Imaging ◽  
Highly Sensitive ◽  
Darkfield Microscopy

We present a highly sensitive Pb2+ detection method by in situ real-time imaging of Pb2+ catalyzed etching and size reduction of immobilized single gold nanoparticles with darkfield microscopy.

scholarly journals Tandem X-ray absorption spectroscopy and scattering for in situ time-resolved monitoring of gold nanoparticle mechanosynthesis

2020 ◽  
Vol 56 (71) ◽  
pp. 10329-10332 ◽  
Author(s):  
Paulo F. M. de Oliveira ◽  
Adam A. L. Michalchuk ◽  
Ana Guilherme Buzanich ◽  
Ralf Bienert ◽  
Roberto M. Torresi ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Absorption Spectroscopy ◽  
Mechanochemical Synthesis ◽  
Time Resolved ◽  
X Ray ◽  
X Ray Absorption

A new tandem approach combines XRD and XANES for time-resolved in situ monitoring of the mechanochemical synthesis of gold nanoparticles.

A facile method to in situ fabricate three dimensional gold nanoparticle micropatterns in a cell-resistant hydrogel

2016 ◽  
Vol 15 (2) ◽  
pp. 181-186
Author(s):  
Ming-Hao Yao ◽  
Jie Yang ◽  
Dong-Hui Zhao ◽  
Rui-Xue Xia ◽  
Rui-Mei Jin ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Polyethylene Glycol ◽  
Gold Nanoparticle ◽  
Three Dimensional ◽  
Photochemical Synthesis ◽  
A Cell

A facile method for in situ fabrication of three-dimensional gold nanoparticles micropatterns throughout a polyethylene glycol hydrogel substrate has been developed by combining photochemical synthesis of gold nanoparticles with photolithography technology.

A highly sensitive gold nanoparticle bioprobe based electrochemical immunosensor using screen printed graphene biochip

RSC Advances ◽  
2014 ◽  
Vol 4 (102) ◽  
pp. 58460-58466 ◽  
Author(s):  
Syazana Abdullah Lim ◽  
Hiroyuki Yoshikawa ◽  
Eiichi Tamiya ◽  
Hartini Mohd Yasin ◽  
Minhaz Uddin Ahmed
Keyword(s):  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Chorionic Gonadotropin ◽  
Human Chorionic Gonadotropin ◽  
Electrode Material ◽  
Electrochemical Immunosensor ◽  
Highly Sensitive ◽  
Electrochemical Label ◽  
Screen Printed

This study describes a highly sensitive electrochemical immunosensor for the detection of human chorionic gonadotropin (hCG) that uses gold nanoparticles (AuNP) as the electrochemical label and graphene as electrode material.

Cancer-targeted functional gold nanoparticles for apoptosis induction and real-time imaging based on FRET

Nanoscale ◽  
2014 ◽  
Vol 6 (16) ◽  
pp. 9531 ◽  
Author(s):  
Wei-Hai Chen ◽  
Guo-Feng Luo ◽  
Xiao-Ding Xu ◽  
Hui-Zhen Jia ◽  
Qi Lei ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Real Time ◽  
Apoptosis Induction ◽  
Real Time Imaging

scholarly journals Graphene transistors for real-time monitoring molecular self-assembly dynamics

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Marco Gobbi ◽  
Agostino Galanti ◽  
Marc-Antoine Stoeckel ◽  
Bjorn Zyska ◽  
Sara Bonacchi ◽  
...  
Keyword(s):  
Real Time ◽  
Self Assembly ◽  
Molecular Assembly ◽  
Self Organization ◽  
Highly Sensitive ◽  
Graphene Devices ◽  
Solid Liquid Interface ◽  
Solid Liquid ◽  
Molecular Ensemble

Abstract Mastering the dynamics of molecular assembly on surfaces enables the engineering of predictable structural motifs to bestow programmable properties upon target substrates. Yet, monitoring self-assembly in real time on technologically relevant interfaces between a substrate and a solution is challenging, due to experimental complexity of disentangling interfacial from bulk phenomena. Here, we show that graphene devices can be used as highly sensitive detectors to read out the dynamics of molecular self-assembly at the solid/liquid interface in-situ. Irradiation of a photochromic molecule is used to trigger the formation of a metastable self-assembled adlayer on graphene and the dynamics of this process are monitored by tracking the current in the device over time. In perspective, the electrical readout in graphene devices is a diagnostic and highly sensitive means to resolve molecular ensemble dynamics occurring down to the nanosecond time scale, thereby providing a practical and powerful tool to investigate molecular self-organization in 2D.

scholarly journals Real-time imaging of activation and degradation of carbon supported octahedral Pt–Ni alloy fuel cell catalysts at the nanoscale using in situ electrochemical liquid cell STEM

2019 ◽  
Vol 12 (8) ◽  
pp. 2476-2485 ◽  
Author(s):  
Vera Beermann ◽  
Megan E. Holtz ◽  
Elliot Padgett ◽  
Jorge Ferreira de Araujo ◽  
David A. Muller ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Real Time ◽  
Electrochemical Activation ◽  
Real Time Imaging ◽  
Ni Alloy ◽  
Fuel Cell Catalysts ◽  
Nanoscale Imaging ◽  
Liquid Cell

In situ nanoscale imaging of the electrochemical activation and degradation of carbon-supported octahedral Pt–Ni nanocatalysts in real time.

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