Surface Forces in Aqueous Polyvinylamine Solutions. I. Glass Surfaces

Langmuir ◽  
1999 ◽  
Vol 15 (22) ◽  
pp. 7789-7794 ◽  
Author(s):  
E. Poptoshev ◽  
M. W. Rutland ◽  
P. M. Claesson
Keyword(s):  
Surface Forces ◽  
Glass Surfaces

Surface forces between glass surfaces in cetyltrimethylammonium bromide solutions

1993 ◽  
Vol 97 (29) ◽  
pp. 7706-7710 ◽  
Author(s):  
John L. Parker ◽  
Vassily V. Yaminsky ◽  
Per M. Claesson
Keyword(s):  
Cetyltrimethylammonium Bromide ◽  
Surface Forces ◽  
Glass Surfaces ◽  
Bromide Solutions

Surface forces and characterization of glass surfaces bearing grafted polymers: solvent dependence

2002 ◽  
Vol 16 (7) ◽  
pp. 965-981 ◽  
Author(s):  
M. A. Plunkett ◽  
S. Rödner ◽  
L. Bergström ◽  
M. W. Rutland
Keyword(s):  
Surface Forces ◽  
Grafted Polymers ◽  
Solvent Dependence ◽  
Glass Surfaces

scholarly journals Stick–slip friction of gecko-mimetic flaps on smooth and rough surfaces

2015 ◽  
Vol 12 (104) ◽  
pp. 20141346 ◽  
Author(s):  
Saurabh Das ◽  
Nicholas Cadirov ◽  
Sathya Chary ◽  
Yair Kaufman ◽  
Jack Hogan ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Silica Surface ◽  
Surface Forces ◽  
Surface Forces Apparatus ◽  
Stick Slip ◽  
Theoretical Approaches ◽  
Frictional Forces ◽  
Modified Surface ◽  
Glass Surfaces ◽  
Effect Of Surface

The discovery and understanding of gecko ‘frictional-adhesion’ adhering and climbing mechanism has allowed researchers to mimic and create gecko-inspired adhesives. A few experimental and theoretical approaches have been taken to understand the effect of surface roughness on synthetic adhesive performance, and the implications of stick–slip friction during shearing. This work extends previous studies by using a modified surface forces apparatus to quantitatively measure and model frictional forces between arrays of polydimethylsiloxane gecko footpad-mimetic tilted microflaps against smooth and rough glass surfaces. Constant attachments and detachments occur between the surfaces during shearing, as described by an avalanche model. These detachments ultimately result in failure of the adhesion interface and have been characterized in this study. Stick–slip friction disappears with increasing velocity when the flaps are sheared against a smooth silica surface; however, stick–slip was always present at all velocities and loads tested when shearing the flaps against rough glass surfaces. These results demonstrate the significance of pre-load, shearing velocity, shearing distances, commensurability and shearing direction of gecko-mimetic adhesives and provide us a simple model for analysing and/or designing such systems.

Decoration of specific sites on freeze-fractured membranes

1978 ◽  
Vol 36 (2) ◽  
pp. 140-141
Author(s):  
H. Gross ◽  
H. Moor
Keyword(s):  
Pure Water ◽  
Freeze Fracture ◽  
Chemical Properties ◽  
Surface Forces ◽  
Sulfate Pentahydrate ◽  
Copper Sulfate Pentahydrate ◽  
Physico Chemical ◽  
Water Of Hydration ◽  
Small Container ◽  
Binding Forces

Fracturing under ultrahigh vacuum (UHV, p ≤ 10-9 Torr) produces membrane fracture faces devoid of contamination. Such clean surfaces are a prerequisite foe studies of interactions between condensing molecules is possible and surface forces are unequally distributed, the condensate will accumulate at places with high binding forces; crystallites will arise which may be useful a probes for surface sites with specific physico-chemical properties. Specific “decoration” with crystallites can be achieved nby exposing membrane fracture faces to water vopour. A device was developed which enables the production of pure water vapour and the controlled variation of its partial pressure in an UHV freeze-fracture apparatus (Fig.1a). Under vaccum (≤ 10-3 Torr), small container filled with copper-sulfate-pentahydrate is heated with a heating coil, with the temperature controlled by means of a thermocouple. The water of hydration thereby released enters a storage vessel.

Acquired Factor XI Inhibitors in Two Patients with Hereditary Factor XI Deficiency

1984 ◽  
Vol 51 (03) ◽  
pp. 371-375 ◽  
Author(s):  
Kangathevy Morgan ◽  
Sandra Schiffman ◽  
Donald Feinstein
Keyword(s):  
Protein A ◽  
Lambda Light Chain ◽  
Factor Xi ◽  
Spontaneous Bleeding ◽  
Factor Xi Deficiency ◽  
Hereditary Factor ◽  
Coagulation Mechanism ◽  
Factor Xia ◽  
Polyclonal Igg ◽  
Glass Surfaces

SummaryTwo patients with hereditary factor XI deficiency developed inhibitors following plasma transfusions. Neither had severe spontaneous bleeding. The patients’ plasmas neutralized both factor XI in plasma, purified factor XI, and purified factor XIa. The inhibitor in both patients’ plasmas adsorbed to Protein A- Sepharose. The inhibitors eluted from Protein A-Sepharose were partially neutralized by kappa and lambda light chain antisera indicating that they were polyclonal IgG antibodies. Both inhibitors markedly decreased adsorption of factor XI to glass surfaces. The cleavage of factor XI by trypsin was unaffected by the inhibitors. The lack of severe spontaneous bleeding in both of these patients strongly suggests that an alternate coagulation mechanism bypassing factor XI must compensate for this severe defect.

Incorporation of Multi Wall Carbon Nanotubes into Glass-Surfaces via Laser-Treatment

2003 ◽  
Vol 772 ◽  
Author(s):  
T. Seeger ◽  
G. de la Fuente ◽  
W.K. Maser ◽  
A.M. Benito ◽  
A. Righi ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Continuous Wave ◽  
Silica Surface ◽  
Multi Wall Carbon Nanotubes ◽  
Composite Formation ◽  
Multi Walled Carbon Nanotubes ◽  
Glass Surfaces ◽  
Walled Carbon Nanotubes ◽  
First Time ◽  
Scanning Electron

AbstractCarbon nanotubes (CNT) are interesting candidates for the reinforcement in robust composites and for conducting fillers in polymers due to their fascinating electronic and mechanical properties. For the first time, we report the incorporation of multi walled carbon nanotubes (MWNTs) into silica-glass surfaces by means of partial surface-melting caused by a continuous wave Nd:YAG laser. MWNTs were detected being well incorporated in the silica-surface. The composites are characterized using scanning electron microscopy (SEM) and Raman-spectroscopy. A model for the composite-formation is proposed based on heatabsorption by MWNTs and a partial melting of the silica-surface.

scholarly journals Physical and chemical reactivity of mechanically primed glass surfaces of CSP reflectors

2020 ◽  
Author(s):  
Sofia Boukheir ◽  
Abdelouahed Chbihi ◽  
Amal Matal ◽  
Sara Lakhouil ◽  
Sanae Naamane ◽  
...  
Keyword(s):  
Chemical Reactivity ◽  
Glass Surfaces ◽  
Physical And Chemical

Imaging the condensation and evaporation of molecularly thin ethanol films with surface forces apparatus

2014 ◽  
Vol 85 (1) ◽  
pp. 013702 ◽  
Author(s):  
Gutian Zhao ◽  
Qiyan Tan ◽  
Li Xiang ◽  
Di Zhang ◽  
Zhonghua Ni ◽  
...  
Keyword(s):  
Surface Forces ◽  
Surface Forces Apparatus
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