Dynamics of Soft Wetting

Compositionally Complex Alloy MnFeCoNiCu for Brazing Nickel‐Based Superalloy Haynes 214

“…Contact angle and drop volume were measured using the Python program drop analysis by van Gorcum. [ 13 ] The program was adapted to the experimental setup to measure the dependency of contact angle on temperature and time.…”

Optimization of Oligomer Stamping Technique for Normally Closed Elastomeric Valves on Glass Substrate

“…Videos were trimmed to capture only the frames where the droplet was determined to be dynamically spreading, thus capturing only the advancing contact angle and more accurately reflecting the surface energy after treatment [ 13 , 14 ]. A subpixel edge detection algorithm was used to fit the droplet edge to a 2nd -order polynomial and subsequently extract left and right contact angles for each frame of the trimmed video [ 15 ]. Reported measurements reflect the average extracted angle over the valid frames of each droplet spreading.…”

Droplet interaction with soft substrates

“…where d denotes the distance from the three-phase contact line, γ sin θ represents the vertical component of the liquid-vapour interfacial tension, G is the shear modulus of the solid substrate and ε is a cut-off length where linear elastic theory is no longer applicable [91]. The presence of ε is to account for the singularity at x = 0, for which the elastic solid is unable to bolster the perfectly localized vertical contact line force [100]. To make the elasticity theory work, a finite width of ε was introduced and this assumed the wetting ridge to take a rounded tip.…”