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Nanoparticle films as sensitive strain gauges
- Source :
- Applied Physics Letters. 91:183105
- Publication Year :
- 2007
- Publisher :
- AIP Publishing, 2007.
-
Abstract
- We demonstrate that thin films consisting of cross-linked nanoparticle aggregates function as highly sensitive strain gauges. The sensors exploit the exponential dependence of the interparticle tunnel resistance on the particle separation. Their sensitivity (gauge factor) is two orders of magnitude higher than that of conventional metal foil gauges and rivals that of state-of-the-art semiconductor gauges. We describe the strain gauge behavior in a tunneling model that predicts the dependence of the gauge factor on several parameters, in particular, the nanoparticle size, the interparticle separation gap, and the conductance of the linker molecules.
- Subjects :
- Materials science
Physics and Astronomy (miscellaneous)
Condensed matter physics
business.industry
High Energy Physics::Lattice
High Energy Physics::Phenomenology
Conductance
Nanoparticle
Nanotechnology
High Energy Physics::Theory
Semiconductor
Gauge factor
Thin film
business
Order of magnitude
Strain gauge
Quantum tunnelling
Subjects
Details
- ISSN :
- 10773118 and 00036951
- Volume :
- 91
- Database :
- OpenAIRE
- Journal :
- Applied Physics Letters
- Accession number :
- edsair.doi...........52bdbe8c439fd1edcf819a6372a644a0