Journal article
Experimental demonstration that a free-falling aerosol particle obeys a fluctuation theorem
Physical review. E, Vol.97(5-1), pp.050601-050601
05/2018
DOI: 10.1103/PhysRevE.97.050601
PMID: 29906952
Abstract
We investigate the fluctuating motion of an aerosol particle falling in air. Using a Millikan-like setup, we tracked a 1-μm sphere falling at its terminal velocity. We observe occurrences of particles undergoing upward displacements against the force of gravity, so that negative work is done briefly. These negative-work events have a probability that is shown to obey the work fluctuation theorem. This experimental confirmation of the theorem's applicability to aerosols leads us to develop and demonstrate an application: an in situ measurement of an aerosol particle's mass.
Details
- Title: Subtitle
- Experimental demonstration that a free-falling aerosol particle obeys a fluctuation theorem
- Creators
- Chun-Shang Wong - University of IowaJ Goree - University of IowaRanganathan Gopalakrishnan - University of Memphis
- Resource Type
- Journal article
- Publication Details
- Physical review. E, Vol.97(5-1), pp.050601-050601
- DOI
- 10.1103/PhysRevE.97.050601
- PMID
- 29906952
- NLM abbreviation
- Phys Rev E
- ISSN
- 2470-0045
- eISSN
- 2470-0053
- Grant note
- DOI: 10.13039/100000001, name: National Science Foundation, award: 1162645; DOI: 10.13039/100000015, name: U.S. Department of Energy, award: DE-SC0014566; DOI: 10.13039/100000104, name: National Aeronautics and Space Administration, award: 1562068
- Language
- English
- Date published
- 05/2018
- Academic Unit
- Physics and Astronomy; Mechanical Engineering
- Record Identifier
- 9984199849202771
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