NDLI: Pull-off forces measured

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Pull-off forces measured

Content Provider	Scilit
Author	Drelich, J. Mittal, Kash L.
Copyright Year	2005
Description	The most consistent pull-off force studies involving CH3-terminated monolayers have been done in liquid environments. Several studies have reported pulloff forces ranging from 0.5 to 5 nN in ethanol solution [1, 3, 6, 12]. The variation in the measured forces was attributed to the size of the interacting probe. The SAM-ethanol interfacial free energy was calculated according to the Johnson-Kendall-Roberts (JKR) theory [17] to be in the range of 1.0-3.0 mJ/m 2 in these studies. The pull-off force values measured between CH3-terminated surfaces in water were much less reproducible [1, 12, 16]. Complications in pull-off force measurements arise in an aqueous environment due to capillary effects associated with formation of gas bridges between hydrophobic surfaces. Submicroscopic air bubbles can nucleate on hydrophobic surfaces, which then form air bridges between the probe and the substrate [16]. Book Name: Atomic Force Microscopy in Adhesion Studies
Related Links	https://content.taylorfrancis.com/books/download?dac=C2012-0-01935-9&isbn=9780429087295&doi=10.1201/b12164-76&format=pdf
Ending Page	252
Page Count	2
Starting Page	251
DOI	10.1201/b12164-76
Language	English
Publisher	Informa UK Limited
Publisher Date	2005-10-01
Access Restriction	Open
Subject Keyword	Book Name: Atomic Force Microscopy in Adhesion Studies Forces Measured Ch3 Terminated Pull Off Force Measurements
Content Type	Text
Resource Type	Chapter

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