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Morphological Transitions of Water Channels Induced by Vertical Vibrations.
Langmuir. 2018 10 30; 34(43):12882-12888.L

Abstract

We report the results of comprehensive experiments and numerical calculations of interfacial morphologies of water confined to the hydrophilic top face of rectangular posts subjected to vertical vibrations. In response to mechanical driving, an initially flat liquid channel is collected into a liquid bulge that forms in the center of the rectangular post if the acceleration exceeds a certain threshold. The bulge morphology persists after the driving is switched off, in agreement with the morphological bistability of static interfacial shapes on posts with large length-to-width ratios. In a narrow frequency band, the channel does not decay into a bulge at any acceleration amplitude, but displays irregular capillary waves and sloshing instead. On short posts, however, a liquid bulge can be dynamically sustained through vertical vibrations but quickly decays into a homogeneous channel after the external driving is stopped. To explain the dynamic bulging of the liquid interface, we propose an effective lifting force pulling on the drop's slowly moving center of mass in the presence of fast oscillation modes.

Authors+Show Affiliations

Dipartimento di Fisica e Astronomia "G. Galilei" , Università di Padova , Via Marzolo 8 , I-35131 Padova , Italy.Dipartimento di Fisica e Astronomia "G. Galilei" , Università di Padova , Via Marzolo 8 , I-35131 Padova , Italy.Dipartimento di Fisica e Astronomia "G. Galilei" , Università di Padova , Via Marzolo 8 , I-35131 Padova , Italy.Dipartimento di Fisica e Astronomia "G. Galilei" , Università di Padova , Via Marzolo 8 , I-35131 Padova , Italy.Dipartimento di Fisica e Astronomia "G. Galilei" , Università di Padova , Via Marzolo 8 , I-35131 Padova , Italy.Department of Physics , Durham University , DH1 3LE Durham , U.K.Geometry of Fluid Interfaces Group, Experimental Physics , Saarland University , 66123 Saarbrücken , Germany.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

30286294

Citation

Sartori, Paolo, et al. "Morphological Transitions of Water Channels Induced By Vertical Vibrations." Langmuir : the ACS Journal of Surfaces and Colloids, vol. 34, no. 43, 2018, pp. 12882-12888.
Sartori P, Bonato L, Delfitto G, et al. Morphological Transitions of Water Channels Induced by Vertical Vibrations. Langmuir. 2018;34(43):12882-12888.
Sartori, P., Bonato, L., Delfitto, G., Pierno, M., Mistura, G., Semprebon, C., & Brinkmann, M. (2018). Morphological Transitions of Water Channels Induced by Vertical Vibrations. Langmuir : the ACS Journal of Surfaces and Colloids, 34(43), 12882-12888. https://doi.org/10.1021/acs.langmuir.8b02370
Sartori P, et al. Morphological Transitions of Water Channels Induced By Vertical Vibrations. Langmuir. 2018 10 30;34(43):12882-12888. PubMed PMID: 30286294.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Morphological Transitions of Water Channels Induced by Vertical Vibrations. AU - Sartori,Paolo, AU - Bonato,Luca, AU - Delfitto,Giorgio, AU - Pierno,Matteo, AU - Mistura,Giampaolo, AU - Semprebon,Ciro, AU - Brinkmann,Martin, Y1 - 2018/10/22/ PY - 2018/10/5/pubmed PY - 2018/10/5/medline PY - 2018/10/5/entrez SP - 12882 EP - 12888 JF - Langmuir : the ACS journal of surfaces and colloids JO - Langmuir VL - 34 IS - 43 N2 - We report the results of comprehensive experiments and numerical calculations of interfacial morphologies of water confined to the hydrophilic top face of rectangular posts subjected to vertical vibrations. In response to mechanical driving, an initially flat liquid channel is collected into a liquid bulge that forms in the center of the rectangular post if the acceleration exceeds a certain threshold. The bulge morphology persists after the driving is switched off, in agreement with the morphological bistability of static interfacial shapes on posts with large length-to-width ratios. In a narrow frequency band, the channel does not decay into a bulge at any acceleration amplitude, but displays irregular capillary waves and sloshing instead. On short posts, however, a liquid bulge can be dynamically sustained through vertical vibrations but quickly decays into a homogeneous channel after the external driving is stopped. To explain the dynamic bulging of the liquid interface, we propose an effective lifting force pulling on the drop's slowly moving center of mass in the presence of fast oscillation modes. SN - 1520-5827 UR - https://www.unboundmedicine.com/medline/citation/30286294/Morphological_Transitions_of_Water_Channels_Induced_by_Vertical_Vibrations L2 - https://dx.doi.org/10.1021/acs.langmuir.8b02370 DB - PRIME DP - Unbound Medicine ER -
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