Light-Induced Aggregation of Gold Nanoparticles and Photoswitching of Silicon Surface Potential

2017 ◽  
Vol 121 (48) ◽  
pp. 27176-27181 ◽  
Author(s):  
Mohammed Ikbal ◽  
Dora Balogh ◽  
Evgeniy Mervinetsky ◽  
Ruthy Sfez ◽  
Shlomo Yitzchaik
Keyword(s):  
Gold Nanoparticles ◽  
Surface Potential ◽  
Silicon Surface ◽  
Induced Aggregation

Detection of pH-induced aggregation of “smart” gold nanoparticles with photothermal optical coherence tomography

2013 ◽  
Vol 38 (21) ◽  
pp. 4429 ◽  
Author(s):  
Peng Xiao ◽  
Qingyun Li ◽  
Yongjoon Joo ◽  
Jutaek Nam ◽  
Sekyu Hwang ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Optical Coherence Tomography ◽  
Optical Coherence ◽  
Induced Aggregation

Small Molecule- and Amino Acid-Induced Aggregation of Gold Nanoparticles

Langmuir ◽  
2013 ◽  
Vol 29 (25) ◽  
pp. 7661-7673 ◽  
Author(s):  
Hesham M. Zakaria ◽  
Akash Shah ◽  
Michael Konieczny ◽  
Joan A. Hoffmann ◽  
A. Jasper Nijdam ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Amino Acid ◽  
Small Molecule ◽  
Induced Aggregation

Visual detection of arginine based on the unique guanidino group-induced aggregation of gold nanoparticles

2013 ◽  
Vol 764 ◽  
pp. 78-83 ◽  
Author(s):  
Wendan Pu ◽  
Huawen Zhao ◽  
Chengzhi Huang ◽  
Liping Wu ◽  
Dan Xu
Keyword(s):  
Gold Nanoparticles ◽  
Visual Detection ◽  
Induced Aggregation ◽  
Guanidino Group

scholarly journals Influence of the Ionic Composition of Fluid Medium on Red Cell Aggregation

1973 ◽  
Vol 61 (5) ◽  
pp. 655-668 ◽  
Author(s):  
Kung-Ming Jan ◽  
Shu Chien
Keyword(s):  
Ionic Strength ◽  
Surface Charge ◽  
Double Layer ◽  
Surface Potential ◽  
Electric Double Layer ◽  
Divalent Cations ◽  
Ionic Composition ◽  
Cell Aggregation ◽  
Fluid Medium ◽  
Induced Aggregation

The effects of ionic strength and cationic valency of the fluid medium on the surface potential and dextran-induced aggregation of red blood cells (RBC's) were investigated. The zeta potential was calculated from cell mobility in a microelectrophoresis apparatus; the degree of aggregation of normal and neuraminidase-treated RBC's in dextrans (Dx 40 and Dx 80) was quantified by microscopic observation, measurement of erythrocyte sedimentation rate, and determination of low-shear viscosity. A decrease in ionic strength caused a reduction in aggregation of normal RBC's in dextrans, but had no effect on the aggregation of neuraminidase-treated RBC's. These findings reflect an increase in electrostatic repulsive force between normal RBC's by the reduction in ionic strength due to (a) a decrease in the screening of surface charge by counter-ions and (b) an increase in the thickness of the electric double layer. Divalent cations (Ca++, Mg++, and Ba++) increased aggregation of normal RBC's in dextrans, but had no effect on the aggregation of neuraminidase-treated RBC's. These effects of the divalent cations are attributable to a decrease in surface potential of normal RBC's and a shrinkage of the electric double layer. It is concluded that the surface charge of RBC's plays a significant role in cell-to-cell interactions.

Self-Assembly of Ionic Liquid (BMI-PF6)-Stabilized Gold Nanoparticles on a Silicon Surface: Chemical and Structural Aspects

Langmuir ◽  
2008 ◽  
Vol 24 (15) ◽  
pp. 7785-7792 ◽  
Author(s):  
Om P. Khatri ◽  
Kosaku Adachi ◽  
Kuniaki Murase ◽  
Ken-ichi Okazaki ◽  
Tsukasa Torimoto ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Ionic Liquid ◽  
Self Assembly ◽  
Silicon Surface ◽  
Surface Chemical ◽  
Structural Aspects
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