English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Thin, viscous liquid films subjected to impact events can deform. Here weinvestigate free surface oil film deformations that arise due to the airpressure buildup under the impacting and rebouncing water drops. Using DigitalHolographic Microscopy, we measure the 3D surface topography of the deformedfilm immediately after the drop rebound, with a resolution down to 20 nm. Wefirst discuss how the film is initially deformed during impact, as a functionof film thickness, film viscosity, and drop impact speed. Subsequently, wedescribe the slow relaxation process of the deformed film after the rebound.Scaling laws for the broadening of the width and the decay of the amplitude ofthe perturbations are obtained experimentally and found to be in excellentagreement with the results from a lubrication analysis. We finally arrive at adetailed spatio-temporal description of the oil film deformations that ariseduring the impact and rebouncing of water drops.

Deformation and relaxation of viscous thin films under bouncing drops