Critical angle for electrically driven coalescence of two conical droplets.

Content Provider	Semantic Scholar
Author	Bird, James C. Ristenpart, William D. Belmonte, Andrew Stone, Howard A.
Copyright Year	2009
Abstract	Oppositely charged drops attract one another and, when the drops are sufficiently close, electrical stresses deform the leading edges of each drop into cones. We investigate whether or not the liquid cones coalesce immediately following contact. Using high-speed imaging, we find that the coalescence behavior depends on the cone angle, which we control by varying the drop size and the applied voltage across the drops. The two drops coalesce when the slopes of the cones are small, but recoil when the slopes exceed a critical value. We propose a surface energy model (volume-constrained area minimization) to describe the transition between these two responses. The model predicts a critical cone angle of 30.8 degrees , which is in good agreement with our measurements.
Starting Page	164502
Ending Page	164502
Page Count	1
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://math.mit.edu/~jbird/papers/BirdRisBelStone09_PRL.pdf
Alternate Webpage(s)	http://research.engineering.ucdavis.edu/rrg/wp-content/uploads/sites/81/2015/09/bird_PRL_2009.pdf
PubMed reference number	19905699v1
Volume Number	103
Issue Number	16
Journal	Physical review letters
Language	English
Access Restriction	Open
Subject Keyword	Charge (electrical) Electricity REM Sleep Behavior Disorder Retinal Cone slope voltage
Content Type	Text
Resource Type	Article