Rheological properties of viscoelastic drops on superamphiphobic substrates
The rheological properties of microliter sized drops of polymer solutions were investigated using measurements of their mechanical vibrational response. Drops were suspended on superamphiphobic substrates and vibrated by the application of a short mechanical impulse. Surface vibrations were monitore...
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| Format: | Article |
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American Chemical Society
2016
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| Online Access: | https://eprints.nottingham.ac.uk/34487/ |
| _version_ | 1848794866068226048 |
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| author | Harrold, Victoria C. Paven, Maxime Vollmer, Doris Sharp, James S. |
| author_facet | Harrold, Victoria C. Paven, Maxime Vollmer, Doris Sharp, James S. |
| author_sort | Harrold, Victoria C. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | The rheological properties of microliter sized drops of polymer solutions were investigated using measurements of their mechanical vibrational response. Drops were suspended on superamphiphobic substrates and vibrated by the application of a short mechanical impulse. Surface vibrations were monitored by refracting laser light through the drops and focusing the refracted light onto the surface of a photodiode. Time dependent variations in the photodiode output were Fourier transformed to obtain the frequency and spectral width of the mechanical resonances of the drops. These quantities were related to the frequency dependent shear storage and loss moduli (G′ and G″, respectively) using a simple theoretical model. The resulting rheological properties were found to be in agreement with microrheology measurements of the same solutions. Drop vibration therefore provides a fast and accurate method of quantifying the rheological properties of single drops. |
| first_indexed | 2025-11-14T19:23:00Z |
| format | Article |
| id | nottingham-34487 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:23:00Z |
| publishDate | 2016 |
| publisher | American Chemical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-344872020-05-04T17:38:47Z https://eprints.nottingham.ac.uk/34487/ Rheological properties of viscoelastic drops on superamphiphobic substrates Harrold, Victoria C. Paven, Maxime Vollmer, Doris Sharp, James S. The rheological properties of microliter sized drops of polymer solutions were investigated using measurements of their mechanical vibrational response. Drops were suspended on superamphiphobic substrates and vibrated by the application of a short mechanical impulse. Surface vibrations were monitored by refracting laser light through the drops and focusing the refracted light onto the surface of a photodiode. Time dependent variations in the photodiode output were Fourier transformed to obtain the frequency and spectral width of the mechanical resonances of the drops. These quantities were related to the frequency dependent shear storage and loss moduli (G′ and G″, respectively) using a simple theoretical model. The resulting rheological properties were found to be in agreement with microrheology measurements of the same solutions. Drop vibration therefore provides a fast and accurate method of quantifying the rheological properties of single drops. American Chemical Society 2016-04-01 Article PeerReviewed Harrold, Victoria C., Paven, Maxime, Vollmer, Doris and Sharp, James S. (2016) Rheological properties of viscoelastic drops on superamphiphobic substrates. Langmuir, 32 (16). pp. 4071-4076. ISSN 1520-5827 http://pubs.acs.org/doi/abs/10.1021/acs.langmuir.6b00779 doi:10.1021/acs.langmuir.6b00779 doi:10.1021/acs.langmuir.6b00779 |
| spellingShingle | Harrold, Victoria C. Paven, Maxime Vollmer, Doris Sharp, James S. Rheological properties of viscoelastic drops on superamphiphobic substrates |
| title | Rheological properties of viscoelastic drops on superamphiphobic substrates |
| title_full | Rheological properties of viscoelastic drops on superamphiphobic substrates |
| title_fullStr | Rheological properties of viscoelastic drops on superamphiphobic substrates |
| title_full_unstemmed | Rheological properties of viscoelastic drops on superamphiphobic substrates |
| title_short | Rheological properties of viscoelastic drops on superamphiphobic substrates |
| title_sort | rheological properties of viscoelastic drops on superamphiphobic substrates |
| url | https://eprints.nottingham.ac.uk/34487/ https://eprints.nottingham.ac.uk/34487/ https://eprints.nottingham.ac.uk/34487/ |