Journal article
A simple levitated-drop tensiometer
- Abstract:
- A reliable, simple, and affordable liquid tensiometer is presented in this paper. The instrument consists of 72 ultrasonic transmitters in a tractor beam configuration that levitates small liquid samples (droplets) in air. Under operation, the instrument imparts a pressure instability that causes the droplet to vibrate while still levitating. Droplet oscillations are then detected by a photodiode, and the signal is recorded by an oscilloscope. The frequency of these oscillations is obtained and then used to obtain the effective surface tension of the sample. The instrument operates at the millisecond scale time (t < 12.5 ms), with very small liquid volumes (∼0.5 μl), and the sample is recoverable after testing. The instrument has been experimentally validated with acetone, ethanol, Fluorinert FC-40, water, and whole milk.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, 1.6MB, Terms of use)
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- Publisher copy:
- 10.1063/1.5096959
Authors
- Publisher:
- AIP Publishing
- Journal:
- Review of Scientific Instruments More from this journal
- Volume:
- 90
- Issue:
- 9
- Article number:
- 095109
- Publication date:
- 2019-09-30
- Acceptance date:
- 2019-09-03
- DOI:
- EISSN:
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1089-7623
- ISSN:
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0034-6748
- Language:
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English
- Keywords:
- Pubs id:
-
pubs:1052490
- UUID:
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uuid:e0a22bdf-0b9e-4fc9-afc3-0129258b852c
- Local pid:
-
pubs:1052490
- Source identifiers:
-
1052490
- Deposit date:
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2019-09-08
Terms of use
- Copyright holder:
- Arcenegui-Troya, J et al.
- Copyright date:
- 2019
- Rights statement:
- © 2019 Author(s). Published under license by AIP Publishing
- Notes:
- This is the publisher's version of the article. The final version is available online from AIP Publishing at: 10.1063/1.5096959
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