Hostname: page-component-586b7cd67f-tf8b9 Total loading time: 0 Render date: 2024-11-29T07:31:24.380Z Has data issue: false hasContentIssue false
  • English
  • Français

Force-Strain Curves Of Microcapsules With Atomic Force Microscopy

Published online by Cambridge University Press:  01 February 2011

Eli Lansey  and
Fredy R. Zypman
Eli Lansey
Affiliation:
Yeshiva University, Gerofsky Physics Center, 2495 Amsterdam Avenue, New York, NY 10033, USA
Fredy R. Zypman
Affiliation:
Yeshiva University, Gerofsky Physics Center, 2495 Amsterdam Avenue, New York, NY 10033, USA
Get access

Abstract

We develop an algorithm to measure elastic properties of microcapsules with Atomic Force Microscopy (AFM). The AFM is used as an indenter and presses down on a spherical microcapsule. We study the system from an atomic point of view (considering interactions between the atoms in the system via Equivalent Crystal Theory) and calculate the force produced by the system to balance the external AFM force. We plot this force as a function of the indentation depth, and from that curve we extract the interatomic parameters of ECT that are related with elastic constants. Our calculations model measurements of force-strain curves including non-linear effects. This is relevant as classical elasticity theory breaks down in the AFM indentation regime, when atomic interactions must be considered explicitly.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 838: Symposium O – Scanning Probe and Other Novel Microscopies of Local Phenomena in Nanostructured Materials , 2004 , O10.14
Copyright
Copyright © Materials Research Society 2005

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Gao, C., Donath, E., Moya, S., Dudnik, V., Möhwald, H., Eur. Phys. J. E 5, 21 (2001)Google Scholar
2. Vinogradova, O.I., Andrienko, D., Lulevich, V.V., Nordschild, S., Sukhorukov, G.B., Macromolecules 37, 1113 (2004).Google Scholar
3. Lulevich, V.V., Andrienko, D., Vinogradova, O.L., J. Chem. Phys. 120, 3822 (2004)Google Scholar
4. Smith, J.R., Perry, T., Banerjea, A., Ferrante, J., Bozzolo, G., Phys. Rev. B 44, 6444 (1991)Google Scholar
5. Rose, H., Smith, J.R., Ferrante, J., J. Phys. Condens. Matter 1, 1941 (1989)Google Scholar
6. Heuberger, M., Dietler, G., Schlapbach, Nanotechnology 5, 12 (1994)Google Scholar