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231224s2016 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.6b00779
|2 doi
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|a eng
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|a Harrold, Victoria C
|e verfasserin
|4 aut
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|a Rheological Properties of Viscoelastic Drops on Superamphiphobic Substrates
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|c 2016
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|a Text
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|a ƒaComputermedien
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|a Date Completed 18.05.2018
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|a Date Revised 18.05.2018
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a 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
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Paven, Maxime
|e verfasserin
|4 aut
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|a Vollmer, Doris
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Sharp, James S
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 32(2016), 16 vom: 26. Apr., Seite 4071-6
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|g year:2016
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|g day:26
|g month:04
|g pages:4071-6
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