Force sensing with an optically levitated charged nanoparticle
Force sensing with an optically levitated charged nanoparticle
Levitated optomechanics is showing potential for precise force measurements. Here, we report a case study to show experimentally the capacity of such a force sensor, using an electric field as a tool to detect a Coulomb force applied onto a levitated nanosphere. We experimentally observe the spatial displacement of up to 6.6 nm of the levitated nanosphere by imposing a DC field. We further apply an AC field and demonstrate resonant enhancement of force sensing when a driving frequency, ωAC, and the frequency of the levitated mechanical oscillator, ω0, converge. We directly measure a force of 3.0 ± 1.5 × 10–20 N with 10 s integration time, at a centre of mass temperature of 3 K and at a pressure of 1.6 × 10–5 mbar.
Hempston, David
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Vovrosh, Jamie
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Toros, Marko
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Winstone, George
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Rashid, Muddassar
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Ulbricht, Hendrik
5060dd43-2dc1-47f8-9339-c1a26719527d
28 September 2017
Hempston, David
0100bb52-ca44-452f-93e9-c38c5a56ee6b
Vovrosh, Jamie
f0f7025f-81e2-44b0-aff8-c4ed26e0514a
Toros, Marko
bd02c9f1-e498-474e-a98d-5b9882874915
Winstone, George
a2280720-4c80-43d7-97d0-85666ee4a1e5
Rashid, Muddassar
2d80257f-bf01-4710-8752-6b50165b747b
Ulbricht, Hendrik
5060dd43-2dc1-47f8-9339-c1a26719527d
Hempston, David, Vovrosh, Jamie, Toros, Marko, Winstone, George, Rashid, Muddassar and Ulbricht, Hendrik
(2017)
Force sensing with an optically levitated charged nanoparticle.
Applied Physics Letters, 111 (13).
(doi:10.1063/1.4993555).
Abstract
Levitated optomechanics is showing potential for precise force measurements. Here, we report a case study to show experimentally the capacity of such a force sensor, using an electric field as a tool to detect a Coulomb force applied onto a levitated nanosphere. We experimentally observe the spatial displacement of up to 6.6 nm of the levitated nanosphere by imposing a DC field. We further apply an AC field and demonstrate resonant enhancement of force sensing when a driving frequency, ωAC, and the frequency of the levitated mechanical oscillator, ω0, converge. We directly measure a force of 3.0 ± 1.5 × 10–20 N with 10 s integration time, at a centre of mass temperature of 3 K and at a pressure of 1.6 × 10–5 mbar.
Text
Force sensing with an optically levitated charged nanoparticle
- Accepted Manuscript
More information
Accepted/In Press date: 15 September 2017
e-pub ahead of print date: 28 September 2017
Published date: 28 September 2017
Identifiers
Local EPrints ID: 417633
URI: http://eprints.soton.ac.uk/id/eprint/417633
ISSN: 0003-6951
PURE UUID: 8fc65b2b-7f10-462b-bbec-9b11cb8a6db7
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Date deposited: 07 Feb 2018 17:31
Last modified: 16 Mar 2024 03:58
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Contributors
Author:
David Hempston
Author:
Jamie Vovrosh
Author:
Marko Toros
Author:
George Winstone
Author:
Muddassar Rashid
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