Universal Stokes’s nanomechanical viscometer
Abstract Although, many conventional approaches have been used to measure viscosity of fluids, most methods do not allow non-contact, rapid measurements on small sample volume and have universal applicability to all fluids. Here, we demonstrate a simple yet universal viscometer, as proposed by Stoke...
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Nature Portfolio
2021
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oai:doaj.org-article:4edef86c9e1646278bbb659c7ceb2c882021-12-02T16:14:16ZUniversal Stokes’s nanomechanical viscometer10.1038/s41598-021-93729-02045-2322https://doaj.org/article/4edef86c9e1646278bbb659c7ceb2c882021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-93729-0https://doaj.org/toc/2045-2322Abstract Although, many conventional approaches have been used to measure viscosity of fluids, most methods do not allow non-contact, rapid measurements on small sample volume and have universal applicability to all fluids. Here, we demonstrate a simple yet universal viscometer, as proposed by Stokes more than a century ago, exploiting damping of capillary waves generated electrically and probed optically with sub-nanoscale precision. Using a low electric field local actuation of fluids we generate quasi-monochromatic propagating capillary waves and employ a pair of single-lens based compact interferometers to measure attenuation of capillary waves in real-time. Our setup allows rapid measurement of viscosity of a wide variety of polar, non-polar, transparent, opaque, thin or thick fluids having viscosity values varying over four orders of magnitude from $$10^{0}{-}10^{4}~\text{mPa} \, \text{s}$$ 10 0 - 10 4 mPa s . Furthermore, we discuss two additional damping mechanisms for nanomechanical capillary waves caused by bottom friction and top nano-layer appearing in micro-litre droplets. Such self-stabilized droplets when coupled with precision interferometers form interesting microscopic platform for picomechanical optofluidics for fundamental, industrial and medical applications.Komal ChaudharyPooja MunjalKamal P. SinghNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021) |
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DOAJ |
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DOAJ |
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EN |
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Medicine R Science Q |
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Medicine R Science Q Komal Chaudhary Pooja Munjal Kamal P. Singh Universal Stokes’s nanomechanical viscometer |
| description |
Abstract Although, many conventional approaches have been used to measure viscosity of fluids, most methods do not allow non-contact, rapid measurements on small sample volume and have universal applicability to all fluids. Here, we demonstrate a simple yet universal viscometer, as proposed by Stokes more than a century ago, exploiting damping of capillary waves generated electrically and probed optically with sub-nanoscale precision. Using a low electric field local actuation of fluids we generate quasi-monochromatic propagating capillary waves and employ a pair of single-lens based compact interferometers to measure attenuation of capillary waves in real-time. Our setup allows rapid measurement of viscosity of a wide variety of polar, non-polar, transparent, opaque, thin or thick fluids having viscosity values varying over four orders of magnitude from $$10^{0}{-}10^{4}~\text{mPa} \, \text{s}$$ 10 0 - 10 4 mPa s . Furthermore, we discuss two additional damping mechanisms for nanomechanical capillary waves caused by bottom friction and top nano-layer appearing in micro-litre droplets. Such self-stabilized droplets when coupled with precision interferometers form interesting microscopic platform for picomechanical optofluidics for fundamental, industrial and medical applications. |
| format |
article |
| author |
Komal Chaudhary Pooja Munjal Kamal P. Singh |
| author_facet |
Komal Chaudhary Pooja Munjal Kamal P. Singh |
| author_sort |
Komal Chaudhary |
| title |
Universal Stokes’s nanomechanical viscometer |
| title_short |
Universal Stokes’s nanomechanical viscometer |
| title_full |
Universal Stokes’s nanomechanical viscometer |
| title_fullStr |
Universal Stokes’s nanomechanical viscometer |
| title_full_unstemmed |
Universal Stokes’s nanomechanical viscometer |
| title_sort |
universal stokes’s nanomechanical viscometer |
| publisher |
Nature Portfolio |
| publishDate |
2021 |
| url |
https://doaj.org/article/4edef86c9e1646278bbb659c7ceb2c88 |
| work_keys_str_mv |
AT komalchaudhary universalstokessnanomechanicalviscometer AT poojamunjal universalstokessnanomechanicalviscometer AT kamalpsingh universalstokessnanomechanicalviscometer |
| _version_ |
1718384348762210304 |