TY - JOUR
T1 - Complex spontaneous flows and concentration banding in active polar films
AU - Giomi, Luca
AU - Marchetti, M. Cristina
AU - Liverpool, Tanniemola B.
PY - 2008/11/4
Y1 - 2008/11/4
N2 - We study the dynamical properties of active polar liquid crystalline films. Like active nematic films, active polar films undergo a dynamical transition to spontaneously flowing steady states. Spontaneous flow in polar fluids is, however, always accompanied by strong concentration inhomogeneities or "banding" not seen in nematics. In addition, a spectacular property unique to polar active films is their ability to generate spontaneously oscillating and banded flows even at low activity. The oscillatory flows become increasingly complicated for strong polarity.
AB - We study the dynamical properties of active polar liquid crystalline films. Like active nematic films, active polar films undergo a dynamical transition to spontaneously flowing steady states. Spontaneous flow in polar fluids is, however, always accompanied by strong concentration inhomogeneities or "banding" not seen in nematics. In addition, a spectacular property unique to polar active films is their ability to generate spontaneously oscillating and banded flows even at low activity. The oscillatory flows become increasingly complicated for strong polarity.
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U2 - 10.1103/PhysRevLett.101.198101
DO - 10.1103/PhysRevLett.101.198101
M3 - Article
C2 - 19113315
AN - SCOPUS:55849111519
SN - 0031-9007
VL - 101
JO - Physical Review Letters
JF - Physical Review Letters
IS - 19
M1 - 198101
ER -