Crossref journal-article
AIP Publishing
The Journal of Chemical Physics (317)
Abstract

This article discusses capillary forces measured by scanning force microscopy (SFM), which, as recently reported, show a discontinuous behavior at a low relative humidity between 20% and 40% depending on the solid surfaces. A capillary force discontinuity is very interesting in terms of a possible phase change or restructuring transition of bulk water in the interfacial solid–liquid region. Unfortunately, we have found that SFM measurements show an inherent weakness in the determination of the origin of the forces that are obtained during pull-off measurements. This article critically discusses the origin of the adhesive interactions as a function of relative humidity with chemically modified probing surfaces. Our measurements indicate that force discontinuities in pull-off measurements are strongly affected by the inability of the liquid to form capillary necks below a critical threshold in relative humidity. In the course of this article, we will discuss roughness effects on capillary forces and provide a modified capillary force equation for asperity nanocontacts.

Bibliography

He, M., Szuchmacher Blum, A., Aston, D. E., Buenviaje, C., Overney, R. M., & Luginbühl, R. (2001). Critical phenomena of water bridges in nanoasperity contacts. The Journal of Chemical Physics, 114(3), 1355–1360.

Authors 6
  1. Mingyan He (first)
  2. Amy Szuchmacher Blum (additional)
  3. D. Eric Aston (additional)
  4. Cynthia Buenviaje (additional)
  5. René M. Overney (additional)
  6. Reto Luginbühl (additional)
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Dates
Type When
Created 23 years ago (July 26, 2002, 10:13 a.m.)
Deposited 1 year, 6 months ago (Feb. 5, 2024, 6:21 p.m.)
Indexed 2 weeks, 6 days ago (Aug. 1, 2025, 11:59 p.m.)
Issued 24 years, 7 months ago (Jan. 15, 2001)
Published 24 years, 7 months ago (Jan. 15, 2001)
Published Print 24 years, 7 months ago (Jan. 15, 2001)
Funders 0

None

@article{He_2001, title={Critical phenomena of water bridges in nanoasperity contacts}, volume={114}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.1331298}, DOI={10.1063/1.1331298}, number={3}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={He, Mingyan and Szuchmacher Blum, Amy and Aston, D. Eric and Buenviaje, Cynthia and Overney, René M. and Luginbühl, Reto}, year={2001}, month=jan, pages={1355–1360} }