Email this article Noise Characteristics of the Optical Response of Ferrofluids to a Magnetic Field
- Authors: Prokof’ev A.V.1, Pleshakov I.V.1,2, Shlyagin M.3, Agruzov P.M.1, Bibik E.E.4, Kuz’min Y.I.1
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Affiliations:
- Ioffe Physical Technical Institute, Russian Academy of Sciences
- Peter the Great St. Petersburg Polytechnic University
- Centro de Investigación Científica y Educación Superior de Ensenada
- St. Petersburg State Institute of Technology
- Issue: Vol 45, No 8 (2019)
- Pages: 743-745
- Section: Article
- URL: https://bakhtiniada.ru/1063-7850/article/view/208382
- DOI: https://doi.org/10.1134/S1063785019080121
- ID: 208382
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Abstract
The noise generated by different ferrofluid samples when probed by the fiber-optic method has been investigated. It is shown that switching on a magnetic field significantly increases the noise, which is presumably related to fluctuations accompanying the process of aggregate formation. The dependences of the rms noise on the field strength and probe-light intensity have been experimentally determined. A slow decrease in the rms noise after switching off the magnetic field has been found, which indicates relaxation of the aggregates formed by the field.
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About the authors
A. V. Prokof’ev
Ioffe Physical Technical Institute, Russian Academy of Sciences
Email: ivanple@yandex.ru
Russian Federation, St. Petersburg, 194021
I. V. Pleshakov
Ioffe Physical Technical Institute, Russian Academy of Sciences; Peter the Great St. Petersburg Polytechnic University
Author for correspondence.
Email: ivanple@yandex.ru
Russian Federation, St. Petersburg, 194021; St. Petersburg, 195251
M. Shlyagin
Centro de Investigación Científica y Educación Superior de Ensenada
Email: ivanple@yandex.ru
Mexico, Ensenada
P. M. Agruzov
Ioffe Physical Technical Institute, Russian Academy of Sciences
Email: ivanple@yandex.ru
Russian Federation, St. Petersburg, 194021
E. E. Bibik
St. Petersburg State Institute of Technology
Email: ivanple@yandex.ru
Russian Federation, St. Petersburg, 190013
Yu. I. Kuz’min
Ioffe Physical Technical Institute, Russian Academy of Sciences
Email: ivanple@yandex.ru
Russian Federation, St. Petersburg, 194021
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