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Godin M, Tabard-Cossa V, Miyahara Y, et al. Cantilever-based sensing: the origin of surface stress and optimization strategies. Nanotechnology. 2010;21(7):75501doi: 10.1088/0957-4484/21/7/075501.
Godin, M., Tabard-Cossa, V., Miyahara, Y., Monga, T., Williams, P. J., Beaulieu, L. Y., Bruce Lennox, R., & Grutter, P. (2010). Cantilever-based sensing: the origin of surface stress and optimization strategies. Nanotechnology, 21(7), 75501. https://doi.org/10.1088/0957-4484/21/7/075501
Godin, Michel, et al. "Cantilever-based sensing: the origin of surface stress and optimization strategies." Nanotechnology vol. 21,7 (2010): 75501. doi: https://doi.org/10.1088/0957-4484/21/7/075501
Godin M, Tabard-Cossa V, Miyahara Y, Monga T, Williams PJ, Beaulieu LY, Bruce Lennox R, Grutter P. Cantilever-based sensing: the origin of surface stress and optimization strategies. Nanotechnology. 2010 Feb 19;21(7):75501. doi: 10.1088/0957-4484/21/7/075501. Epub 2010 Jan 18. PMID: 20081290.
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Nanotechnology. 2010 Feb 19;21(7):75501. doi: 10.1088/0957-4484/21/7/075501. Epub 2010 Jan 18.

Cantilever-based sensing: the origin of surface stress and optimization strategies.

Nanotechnology

Michel Godin, Vincent Tabard-Cossa, Yoichi Miyahara, Tanya Monga, P J Williams, L Y Beaulieu, R Bruce Lennox, Peter Grutter

Affiliations

  1. Department of Physics, University of Ottawa, 150 Louis Pasteur, Ottawa, ON, K1N 6N5, Canada. [email protected]

PMID: 20081290 DOI: 10.1088/0957-4484/21/7/075501

Abstract

Many interactions drive the adsorption of molecules on surfaces, all of which can result in a measurable change in surface stress. This article compares the contributions of various possible interactions to the overall induced surface stress for cantilever-based sensing applications. The surface stress resulting from adsorption-induced changes in the electronic density of the underlying surface is up to 2-4 orders of magnitude larger than that resulting from intermolecular electrostatic or Lennard-Jones interactions. We reveal that the surface stress associated with the formation of high quality alkanethiol self-assembled monolayers on gold surfaces is independent of the molecular chain length, supporting our theoretical findings. This provides a foundation for the development of new strategies for increasing the sensitivity of cantilever-based sensors for various applications.

Publication Types

Grant support