Protein and Nanoparticle Adsorption on Orthogonal, Charge-Density-Versus-Net-Charge Surface-Chemical Gradients

Langmuir ◽  
2012 ◽  
Vol 28 (6) ◽  
pp. 3159-3166 ◽  
Author(s):  
Eva Beurer ◽  
Nagaiyanallur V. Venkataraman ◽  
Marianne Sommer ◽  
Nicholas D. Spencer
Keyword(s):  
Charge Density ◽  
Surface Chemical ◽  
Net Charge ◽  
Chemical Gradients

Measurements of the Net Charge Density of Space Plasmas

2021 ◽  
Author(s):  
Chao Shen ◽  
Yufei Zhou ◽  
Lai Gao
Keyword(s):  
Charge Density ◽  
Space Plasmas ◽  
Net Charge

Electrochemical Fabrication of Surface Chemical Gradients in Thiol Self-Assembled Monolayers with Tailored Work-Functions

Langmuir ◽  
2014 ◽  
Vol 30 (39) ◽  
pp. 11591-11598 ◽  
Author(s):  
Giulia Fioravanti ◽  
Francesca Lugli ◽  
Denis Gentili ◽  
Vittoria Mucciante ◽  
Francesca Leonardi ◽  
...  
Keyword(s):  
Self Assembled Monolayers ◽  
Surface Chemical ◽  
Chemical Gradients ◽  
Assembled Monolayers ◽  
Work Functions ◽  
Self Assembled ◽  
Electrochemical Fabrication

A hybrid theoretical method for predicting electrokinetic energy conversion in nanochannels

2020 ◽  
Vol 22 (16) ◽  
pp. 9110-9116
Author(s):  
Xiaoyu Hu ◽  
Yiling Nan ◽  
Xian Kong ◽  
Diannan Lu ◽  
Jianzhong Wu
Keyword(s):  
Charge Density ◽  
Energy Conversion ◽  
Surface Properties ◽  
Hybrid Method ◽  
Md Simulation ◽  
Theoretical Method ◽  
Net Charge ◽  
Method Model ◽  
Non Equilibrium

Schematic illustration of the hybrid method model. ρ is the net charge density calculated from cDFT. v is the velocity calculated from non-equilibrium MD simulation. b and αW are the slipping length and the surface properties, respectively.

Interfacial net charge density of nonintimate Schottky junctions

2002 ◽  
Vol 91 (7) ◽  
pp. 4281-4290 ◽  
Author(s):  
B. Cvikl ◽  
D. Korošak
Keyword(s):  
Charge Density ◽  
Net Charge ◽  
Schottky Junctions

Forces between dissimilar colloidal plates for various surface conditions. II. Equilibrium adsorption effects

1981 ◽  
Vol 59 (13) ◽  
pp. 1888-1897 ◽  
Author(s):  
G. M. Bell ◽  
G. C. Peterson
Keyword(s):  
Charge Density ◽  
Double Layer ◽  
Equilibrium Adsorption ◽  
Total Charge ◽  
Net Charge ◽  
Adsorption Models ◽  
Ionic Adsorption ◽  
Counter Ions ◽  
Weak Adsorption ◽  
Anions And Cations

A method previously developed by the authors is used to study the effects of adsorption of ions on the electric double layer interaction between dissimilar colloidal plates immersed in 1:1 electrolyte. For adsorption models which permit the total charge on a plate to change sign, the double layer force remains finite at all plate separations, including zero. For weak adsorption of the ions on the plates the force between two dissimilar plates tends to be repulsive at small separations, looking rather like a weakened constant surface charge density model. Conversely for strong ionic adsorption the force tends to be attractive at small separations, rather as in the constant surface potential model. In this paper we discuss three adsorption models: (1) fixed primary charge density on the plates with secondary adsorption of both counter-ions and co-ions; (2) fixed primary charge density on the plates with secondary adsorption of the counter-ions only, but including the effects of a Stern layer and self-atmosphere potentials; (3) zero primary charge on both plates with equilibrium adsorption of both anions and cations from solution, the net charge density on the plates arising from differential adsorption of the ion types.

Orthogonal, Three-Component, Alkanethiol-Based Surface-Chemical Gradients on Gold

Langmuir ◽  
2010 ◽  
Vol 26 (11) ◽  
pp. 8392-8399 ◽  
Author(s):  
Eva Beurer ◽  
Nagaiyanallur V. Venkataraman ◽  
Antonella Rossi ◽  
Florian Bachmann ◽  
Roman Engeli ◽  
...  
Keyword(s):  
Surface Chemical ◽  
Chemical Gradients

scholarly journals Measurements of the Net Charge Density of Space Plasmas

2022 ◽  
Author(s):  
Chao Shen ◽  
Yufei Zhou ◽  
Lai Gao ◽  
Zuyin Pu ◽  
Xiaogang Wang ◽  
...  
Keyword(s):  
Charge Density ◽  
Space Plasmas ◽  
Net Charge

scholarly journals Requirement for negatively charged dispersions of phospholipids for interaction with lipid-depleted adenosine triphosphatase

1979 ◽  
Vol 177 (1) ◽  
pp. 265-273 ◽  
Author(s):  
M Isern de Caldentey ◽  
K P Wheeler
Keyword(s):  
Charge Density ◽  
Protein Interaction ◽  
Adenosine Triphosphatase ◽  
Negative Charge ◽  
Enzyme Reaction ◽  
Enzyme Protein ◽  
Net Charge ◽  
Lipid Protein Interaction ◽  
Acyl Chains

The basis of the requirement for a net negative charge on phospholipid dispersions able to re-activate lipid-depleted (Na++K+)-dependent adenosine triphosphatase was studied. The origin and density of the charge in phospholipid dispersions were varied before interaction with the adenosine triphosphatase protein, and the charge density on restored phospholipid-adenosine triphosphatase complexes was changed after interaction. The results indicated that: (a) re-activation requires a lamellar arrangement of the lipid molecules with sufficient density of negative charge, but not necessarily negatively charged phospholipid molecules; (b) the net charge appears to be necessary for the correct interaction between the enzyme protein and the phospholipids, although the amount of phospholipid that binds to the protein is also a function of the nature of the acyl chains; (c) it is not possible on the basis of these findings and those in the literature to decide unequivocally if the charge is also required for the enzyme reaction itself. The possible relevance of the findings to the situation in vivo is discussed in terms of the charge being concerned only with lipid-protein interaction.

Submicrometer Structure of Surface-Chemical Gradients Prepared by a Two-Step Immersion Method

Langmuir ◽  
2006 ◽  
Vol 22 (6) ◽  
pp. 2706-2711 ◽  
Author(s):  
Sara M. Morgenthaler ◽  
Seunghwan Lee ◽  
Nicholas D. Spencer
Keyword(s):  
Surface Chemical ◽  
Immersion Method ◽  
Chemical Gradients
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