Model simulations of the adsorption of statherin to solid surfaces: Effects of surface charge and hydrophobicity

2008 ◽  
Vol 129 (18) ◽  
pp. 185101 ◽  
Author(s):  
M. Skepö
Keyword(s):  
Surface Charge ◽  
Solid Surfaces ◽  
Model Simulations

Thermodynamics of ideal polarizable interfaces

1996 ◽  
Author(s):  
Wolfgang Schmickler
Keyword(s):  
Surface Charge ◽  
Electrolyte Solution ◽  
Solid Surfaces ◽  
Liquid Electrode ◽  
Liquid Electrodes ◽  
Solid Electrodes ◽  
Liquid Surfaces

For liquid electrodes thermodynamics offers a precise way to determine the surface charge and the surface excesses of a species. This is one of the reasons why much of the early work in electrochemistry was performed on liquid electrodes, particularly on mercury - another reason is that it is easier to generate clean liquid surfaces than clean solid surfaces. With some caveats and modifications, thermodynamic relations can also be applied to solid surfaces. We will first consider the interface between a liquid electrode and an electrolyte solution, and turn to solid electrodes later.

scholarly journals Anomalous Interfacial Structuring of a Non-Halogenated Ionic Liquid: Effect of Substrate and Temperature

2018 ◽  
Vol 2 (4) ◽  
pp. 60 ◽  
Author(s):  
Milad Radiom ◽  
Patricia Pedraz ◽  
Georgia Pilkington ◽  
Patrick Rohlmann ◽  
Sergei Glavatskih ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Surface Charge ◽  
Force Measurement ◽  
Surface Force ◽  
Solid Surfaces ◽  
Effect Of Temperature ◽  
Decay Length ◽  
Force Microscopy ◽  
Large Size ◽  
Atomic Force

We investigate the interfacial properties of the non-halogenated ionic liquid (IL), trihexyl(tetradecyl)phosphonium bis(mandelato)borate, [P6,6,6,14][BMB], in proximity to solid surfaces, by means of surface force measurement. The system consists of sharp atomic force microscopy (AFM) tips interacting with solid surfaces of mica, silica, and gold. We find that the force response has a monotonic form, from which a characteristic steric decay length can be extracted. The decay length is comparable with the size of the ions, suggesting that a layer is formed on the surface, but that it is diffuse. The long alkyl chains of the cation, the large size of the anion, as well as crowding of the cations at the surface of negatively charged mica, are all factors which are likely to oppose the interfacial stratification which has, hitherto, been considered a characteristic of ionic liquids. The variation in the decay length also reveals differences in the layer composition at different surfaces, which can be related to their surface charge. This, in turn, allows the conclusion that silica has a low surface charge in this aprotic ionic liquid. Furthermore, the effect of temperature has been investigated. Elevating the temperature to 40 °C causes negligible changes in the interaction. At 80 °C and 120 °C, we observe a layering artefact which precludes further analysis, and we present the underlying instrumental origin of this rather universal artefact.

scholarly journals Kinetics of Enzyme Attack on Substrates Covalently Attached to Solid Surfaces: Influence of Spacer Chain Length, Immobilized Substrate Surface Concentration and Surface Charge

Langmuir ◽  
2008 ◽  
Vol 24 (20) ◽  
pp. 11762-11769 ◽  
Author(s):  
Joseph Deere ◽  
Rui F. De Oliveira ◽  
Bartłomiej Tomaszewski ◽  
Sarah Millar ◽  
Antonia Lalaouni ◽  
...  
Keyword(s):  
Surface Charge ◽  
Chain Length ◽  
Substrate Surface ◽  
Surface Concentration ◽  
Solid Surfaces ◽  
Spacer Chain Length ◽  
Immobilized Substrate ◽  
Kinetics Of

Surface charge-dependent hydrodynamic properties of an electroosmotic slip flow

2018 ◽  
Vol 20 (48) ◽  
pp. 30365-30375 ◽  
Author(s):  
Majid Rezaei ◽  
Ahmad Reza Azimian ◽  
Ahmad Reza Pishevar
Keyword(s):  
Surface Charge ◽  
Electroosmotic Flow ◽  
Slip Flow ◽  
Solid Surfaces ◽  
General View ◽  
Hydrodynamic Properties

The present paper provides a general view of the charge-dependent electroosmotic flow slippage over hydrophobic solid surfaces.

Surface charge mapping of solid surfaces in water by pulsed-force-mode atomic force microscopy

1998 ◽  
Vol 66 (7) ◽  
pp. S349-S352 ◽  
Author(s):  
T. Miyatani ◽  
S. Okamoto ◽  
A. Rosa ◽  
O. Marti ◽  
M. Fujihira
Keyword(s):  
Atomic Force Microscopy ◽  
Surface Charge ◽  
Solid Surfaces ◽  
Force Microscopy ◽  
Atomic Force ◽  
Force Mode ◽  
Mode Atomic Force Microscopy

Effect of surface charge on water film nanoconfined between hydrophilic solid surfaces

2009 ◽  
Vol 105 (12) ◽  
pp. 124301 ◽  
Author(s):  
Shuhai Liu ◽  
Jianbin Luo ◽  
Guoxin Xie ◽  
Dan Guo
Keyword(s):  
Surface Charge ◽  
Water Film ◽  
Solid Surfaces ◽  
Effect Of Surface

scholarly journals Computer Simulation of a Surface Charge Nanobiosensor with Internal Signal Integration

Biosensors ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 397
Author(s):  
Dmitry Dyubo ◽  
Oleg Yu. Tsybin
Keyword(s):  
Surface Charge ◽  
Target Surface ◽  
Solid Surfaces ◽  
Pin Diode ◽  
Signal Integration ◽  
Basic Sciences ◽  
Potential Barriers ◽  
Gate Control ◽  
Internal Integration ◽  
Effect Of Surface

The ionized states of molecular analytes located on solid surfaces require profound investigation and better understanding for applications in the basic sciences in general, and in the design of nanobiosensors, in particular. Such ionized states are induced by the interactions of molecules between them in the analyzed substance and with the target surface. Here, computer simulations using COMSOL Multiphysics software show the effect of surface charge density and distribution on the output generation in a dynamic PIN diode with gate control. This device, having built-in potential barriers, has a unique internal integration of output signal generation. The identified interactions showed the possibility of a new design for implementing a nanobiosensor based on a dynamic PIN diode in a mode with surface charge control.

scholarly journals Control of interface interactions between natural rubber and solid surfaces through charge effects: an AFM study in force spectroscopic mode

RSC Advances ◽  
2017 ◽  
Vol 7 (69) ◽  
pp. 43574-43589
Author(s):  
Alan Jenkin Chan ◽  
Preetha Sarkar ◽  
Fabien Gaboriaud ◽  
Marie-Pierre Fontaine-Aupart ◽  
Christian Marlière
Keyword(s):  
Natural Rubber ◽  
Surface Charge ◽  
Charge State ◽  
Solid Surfaces ◽  
Charge Effects

Adhesion of nanoparticles (natural rubber) is monitored by slight changes in the surface charge state of the contacting solid surfaces.

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