Probing nanoscale dipole-dipole interactions by electric force microscopy

We address the issue of dipole-dipole interaction measurements at the nanometer scale. Electric dipoles with tunable effective momentum in the range 10(3)-10(4) D are generated by charge injection in single silicon nanoparticles on a conductive substrate and probed by a spectroscopic electric force...

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Bibliographic Details
Published in:Physical review letters 2004-04, Vol.92 (16), p.166101-166101, Article 166101
Main Authors: Mélin, T, Diesinger, H, Deresmes, D, Stiévenard, D
Format: Article
Language:English
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Summary:We address the issue of dipole-dipole interaction measurements at the nanometer scale. Electric dipoles with tunable effective momentum in the range 10(3)-10(4) D are generated by charge injection in single silicon nanoparticles on a conductive substrate and probed by a spectroscopic electric force microscopy analysis. Weak dipole-dipole force gradients are measured and identified from their quadratic momentum dependence. The results suggest that dipolar interactions associated with atomic-scale charge displacements or molecules can be probed by noncontact atomic force microscopy.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.92.166101