Climbing droplets driven by mechanowetting on transverse waves

Edwin De Jong, Ye Wang, Jaap den Toonder, Patrick R. Onck (Corresponding author)

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

Uittreksel

Many applications in modern technology, such as self-cleaning surfaces and digital microfluidics, require control over individual fluid droplets on flat surfaces. Existing techniques may suffer from side effects resulting from high electric fields and high temperatures. Here, we introduce a markedly different method, termed “mechanowetting,” that is based on the surface tension–controlled droplet motion on deforming surfaces. The method is demonstrated by transporting droplets using transverse surface waves on horizontal and (vertically) inclined surfaces at transport velocities equal to the wave speed. We fully capture the fundamental mechanism of the mechanowetting force numerically and theoretically and establish its dependence on the fluid properties, surface energy, and wave param- eters. Mechanowetting has the potential to lead to a range of new applications that feature droplet control through dynamic surface deformations.
TaalEngels
Artikelnummereaaw0914
Aantal pagina's8
TijdschriftScience Advances
Volume5
Nummer van het tijdschrift6
DOI's
StatusGepubliceerd - 14 jun 2019

Vingerafdruk

transverse waves
surface waves
dynamic control
fluids
cleaning
surface energy
flat surfaces
interfacial tension
electric fields
temperature

Citeer dit

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Climbing droplets driven by mechanowetting on transverse waves. / De Jong, Edwin; Wang, Ye; den Toonder, Jaap; Onck, Patrick R. (Corresponding author).

In: Science Advances, Vol. 5, Nr. 6, eaaw0914, 14.06.2019.

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

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