Water Structure Controls Carbonic Acid Formation in Adsorbed Water Films

2018 ◽  
Vol 9 (17) ◽  
pp. 4988-4994 ◽  
Author(s):  
Quin R. S. Miller ◽  
Eugene S. Ilton ◽  
Odeta Qafoku ◽  
David A. Dixon ◽  
Monica Vasiliu ◽  
...  
Keyword(s):  
Carbonic Acid ◽  
Water Structure ◽  
Adsorbed Water ◽  
Acid Formation ◽  
Water Films

The statistical thickness and the chemical potential of adsorbed water films

1981 ◽  
Vol 82 (2) ◽  
pp. 534-542 ◽  
Author(s):  
Reinhold Badmann ◽  
Norbert Stockhausen ◽  
Max Josef Setzer
Keyword(s):  
Chemical Potential ◽  
Adsorbed Water ◽  
Water Films

Electrochemical Charge Transfer to Diamond and Other Materials

2009 ◽  
Vol 1203 ◽  
Author(s):  
Vidhya Chakrapani ◽  
John C. Angus ◽  
Kathleen Kash ◽  
Alfred B. Anderson ◽  
Sharvil Desai ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Charge Transfer ◽  
Fermi Level ◽  
Adsorbed Water ◽  
Electrochemical Potential ◽  
Redox Couple ◽  
Contact Charging ◽  
Conductivity Type ◽  
Water Films ◽  
Electrochemical Charge Transfer

AbstractThe oxygen redox couple in adsorbed water films acts as an “electrochemical ground” that tends to pin the Fermi level in solids at the electrochemical potential of the redox couple. We discuss this effect on the conductivity of diamond; the conductivity type of sp2-based carbons including single-walled, semiconducting carbon nanotubes and graphene; the photoluminescence of GaN and ZnO; and the contact charging of metals.

Spectroscopic Monitoring of the Acidity of Water Films on Ru(0001): Orientation-Specific Acidity of Adsorbed Water

2014 ◽  
Vol 20 (12) ◽  
pp. 3376-3383 ◽  
Author(s):  
Youngsoon Kim ◽  
Sunghwan Shin ◽  
Eui-Seong Moon ◽  
Heon Kang
Keyword(s):  
Adsorbed Water ◽  
Spectroscopic Monitoring ◽  
Water Films

Moisture Effects Including Stiction Resulting From Adsorbed Water Films

1992 ◽  
Vol 114 (1) ◽  
pp. 174-180 ◽  
Author(s):  
Chao Gao ◽  
D. Kuhlmann-Wisldorf ◽  
D. D. Makel
Keyword(s):  
Electrical Contact ◽  
Slow Motion ◽  
Adsorbed Water ◽  
Copper Surface ◽  
Contact Spot ◽  
Electrical Contact Resistance ◽  
Local Pressure ◽  
Water Films ◽  
Moisture Effects ◽  
Contact Spots

Stiction resulting from moisture effects at small elastic contact spots has been identified and studied using bundles of fine, gold-plated copper fibers sliding on a gold-plated copper surface. The relevant measurements were made in the hoop apparatus which permits simultaneous monitoring of the momentary coefficient of friction and electrical contact resistance. Previous studies made with the hoop apparatus have shown that under the action of high local pressure, adsorbed moisture is expelled from between the contact spots leaving only one monomolecular layer of adsorbed water on each of the contacting surfaces. Additional details of the observations are varied and permit a refined analysis. Stiction results during periods of very slow motion or rest through local energy reduction at the spots as excess water is slowly drained in the course of molecular ordering of the two absorbed layers. Complex variations of kinetic friction with humidity and sliding speed are explained through the interplay of excess molecules between the contact spot surfaces, meniscus formation, fluid drag about the spots, and shear thinning in that flow.

Sign in / Sign up

Export Citation Format

Share Document