Published January 4, 1999
| public
Journal Article
Open
A self-assembled microlensing rotational probe
- Creators
- Brody, James P.
- Quake, Stephen R.
Chicago
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Abstract
A technique to measure microscopic rotational motion is presented. When a small fluorescent polystyrene microsphere is attached to a larger polystyrene microsphere, the larger sphere acts as a lens for the smaller microsphere and provides an optical signal that is a strong function of the azimuthal angle. We demonstrate the technique by measuring the rotational diffusion constant of the microsphere in solutions of varying viscosity and discuss the feasibility of using this probe to measure rotational motion of biological systems.
Additional Information
©1999 American Institute of Physics. (Received 14 September 1998; accepted 30 October 1998) This work was supported by the Whitaker Foundation and by NSF CAREER Grant No. PHY-9722417.Files
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Additional details
- Eprint ID
- 6873
- Resolver ID
- CaltechAUTHORS:BROapl99
- Created
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2006-12-30Created from EPrint's datestamp field
- Updated
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2021-11-08Created from EPrint's last_modified field