TY - JOUR
T1 - Spreading dynamics and contact angle of completely wetting volatile drops
AU - Jambon-Puillet, Etienne
AU - Carrier, Odile
AU - Shahidzadeh, Noushine
AU - Brutin, David
AU - Eggers, Jens
AU - Bonn, Daniel
PY - 2018/6/10
Y1 - 2018/6/10
N2 - The spreading of evaporating drops without a pinned contact line is studied experimentally and theoretically, measuring the radius R(t) of completely wetting alkane drops of different volatility on glass. Initially the drop spreads (R increases), then owing to evaporation reverses direction and recedes with an almost constant non-zero contact angle θ ∞ β1/3, where β measures the rate of evaporation; eventually the drop vanishes at a finite-time singularity. Our theory, based on a first-principles hydrodynamic description, well reproduces the dynamics of R and the value of θ during retraction.
AB - The spreading of evaporating drops without a pinned contact line is studied experimentally and theoretically, measuring the radius R(t) of completely wetting alkane drops of different volatility on glass. Initially the drop spreads (R increases), then owing to evaporation reverses direction and recedes with an almost constant non-zero contact angle θ ∞ β1/3, where β measures the rate of evaporation; eventually the drop vanishes at a finite-time singularity. Our theory, based on a first-principles hydrodynamic description, well reproduces the dynamics of R and the value of θ during retraction.
UR - http://www.scopus.com/inward/record.url?scp=85045297049&partnerID=8YFLogxK
U2 - 10.1017/jfm.2018.142
DO - 10.1017/jfm.2018.142
M3 - Article (Academic Journal)
AN - SCOPUS:85045297049
VL - 844
SP - 817
EP - 830
JO - Journal of Fluid Mechanics
JF - Journal of Fluid Mechanics
SN - 0022-1120
ER -