Non-contact AFM measurement of the Hamaker constants of solids: Calibrating cantilever geometries

Non-contact AFM measurement of the Hamaker constants of solids: Calibrating cantilever geometries Journal of Colloid and Interface Science 517 (2018) 213–220 Contents lists available at ScienceDirect Journal of Colloid and Interface Science journal homepage: www.elsevier.com/locate/jcis Regular Article Non-contact AFM measurement of the Hamaker constants of solids: Calibrating cantilever geometries Sean G. Fronczak, Christopher A. Browne, Elizabeth C. Krenek, Stephen P. Beaudoin, David S. Corti Davidson School of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, West Lafayette, IN 47907-2100, United States graphical a bstract article i nfo abstract Article history: Hypothesis: Surface effects arising from roughness and deformation can negatively affect the results of Received 8 December 2017 AFM contact experiments. Using the non-contact portion of an AFM deflection curve is therefore desirable Revised 29 January 2018 for estimating the Hamaker constant, A, of a solid material. A previously validated non-contact quasi- Accepted 30 January 2018 dynamic method for estimating A is revisited, in which the cantilever tip is now always represented Available online 1 February 2018 by an ‘‘effective sphere”. In addition to simplifying this previous method, accurate estimates of A can still be obtained even though precise knowledge of the nanoscale geometric features of the cantilever tip are Keywords: no longer required. van der Waals force Experiments: The tip’s http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Colloid and Interface Science Elsevier

Non-contact AFM measurement of the Hamaker constants of solids: Calibrating cantilever geometries

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Publisher
Elsevier
Copyright
Copyright © 2018 Elsevier Inc.
ISSN
0021-9797
eISSN
1095-7103
D.O.I.
10.1016/j.jcis.2018.01.108
Publisher site
See Article on Publisher Site

Abstract

Journal of Colloid and Interface Science 517 (2018) 213–220 Contents lists available at ScienceDirect Journal of Colloid and Interface Science journal homepage: www.elsevier.com/locate/jcis Regular Article Non-contact AFM measurement of the Hamaker constants of solids: Calibrating cantilever geometries Sean G. Fronczak, Christopher A. Browne, Elizabeth C. Krenek, Stephen P. Beaudoin, David S. Corti Davidson School of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, West Lafayette, IN 47907-2100, United States graphical a bstract article i nfo abstract Article history: Hypothesis: Surface effects arising from roughness and deformation can negatively affect the results of Received 8 December 2017 AFM contact experiments. Using the non-contact portion of an AFM deflection curve is therefore desirable Revised 29 January 2018 for estimating the Hamaker constant, A, of a solid material. A previously validated non-contact quasi- Accepted 30 January 2018 dynamic method for estimating A is revisited, in which the cantilever tip is now always represented Available online 1 February 2018 by an ‘‘effective sphere”. In addition to simplifying this previous method, accurate estimates of A can still be obtained even though precise knowledge of the nanoscale geometric features of the cantilever tip are Keywords: no longer required. van der Waals force Experiments: The tip’s

Journal

Journal of Colloid and Interface ScienceElsevier

Published: May 1, 2018

References

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