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Updated: Jul 5, 2025
High Throughput Analysis of Liquid Droplet Impacts
Published on: March 6, 2020
An Experimental Study on Complete Droplet Rebound from Soft Surfaces: Critical Weber Numbers, Maximum Spreading, and
Lei Yang1, Ximiao Liu1, Jinyang Wang2,3
1College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, China.
Abstract:
Droplet impact on soft surfaces (PDMS) was experimentally studied with particular interest in the complete rebound of droplets. This study focuses on the effect of liquid viscosity and the elastic modulus of the substrate on the critical rebound Weber number, maximum spreading, and contact time. Specifically, the lower and upper critical Weber numbers increase with an increasing droplet viscosity. With decreasing PDMS elastic modulus, the upper critical Weber number increases, while the lower critical Weber number decreases. The PDMS elastic modulus does not significantly affect the maximum spreading time and contact time. An interesting phenomenon of discontinuous contact time was experimentally observed and was theoretically interpreted.
