15 citations · 39 across the 6 of their papers we have counts for
6 papers
Droplets sitting on thin elastic sheets: A study with the boundary element method
Salik Sultan, Josua Grawitter, Gonçalo C. Antunes +1
Elasto-capillarity of a droplet wetting an elastic sheet provides an interesting system, both for fundamental and applied research. The droplet sinks into the sheet and assumes the…
Steering droplets on substrates with plane-wave wettability patterns and deformations
Josua Grawitter, Holger Stark
Motivated by strategies for targeted microfluidic transport of droplets, we investigate how sessile droplets can be steered toward a preferred direction using travelling waves in s…
Droplets on substrates with oscillating wettability
Josua Grawitter, Holger Stark
In recent decades novel solid substrates have been designed which change their wettability in response to light or an electrostatic field. Here, we investigate a droplet on substra…
Steering droplets on substrates using moving steps in wettability
Josua Grawitter, Holger Stark
Droplets move on substrates with a spatio-temporal wettability pattern as generated, for example, on light-switchable surfaces. To study such cases, we implement the boundary-eleme…
Dissipative systems with nonlocal delayed feedback control
Josua Grawitter, Reinier van Buel, Christian Schaaf +1
We present a linear model, which mimics the response of a spatially extended dissipative medium to a distant perturbation, and investigate its dynamics under delayed feedback contr…
Feedback-Control of Photoresponsive Fluid Interfaces
Josua Grawitter, Holger Stark
Photoresponsive surfactants provide a unique microfluidic driving mechanism. Since their molecular shapes change under illumination and thereby affect surface tension of fluid inte…