Winstone, G., Bennett, R. , Rademacher, M., Rashid, M., Buhmann, S. and Ulbricht, H. (2018) Direct measurement of the electrostatic image force of a levitated charged nanoparticle close to a surface. Physical Review A: Atomic, Molecular and Optical Physics, 98(5), 053831. (doi: 10.1103/PhysRevA.98.053831)
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Abstract
We report on optical levitation experiments to probe the interaction of a nanoparticle with a surface in vacuum. The observed interaction-induced effect is a controllable anharmonicity of the particle trapping potential. We reconstruct the Coulomb image charge interaction potential to be in perfect agreement with the experimental data for a particle carrying Q = − ( 11 ± 1 ) e elementary charges and compare the measured electrostatic interaction with the weaker dispersive forces from theory. Our experimental results may open the route for a new surface sensitive scanning probe technique based on the high mechanical sensitivity of levitated nanoparticles.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Bennett, Dr Robert |
| Authors: | Winstone, G., Bennett, R., Rademacher, M., Rashid, M., Buhmann, S., and Ulbricht, H. |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Journal Name: | Physical Review A: Atomic, Molecular and Optical Physics |
| Publisher: | American Physical Society |
| ISSN: | 1050-2947 |
| ISSN (Online): | 1094-1622 |
| Published Online: | 19 November 2018 |
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