@article{ISI:000507281500001,
 abstract = {Nonlinearities in constitutive equations of extended objects in shear
flow lead to novel phenomena, e.g. `rheochaos' in solutions of wormlike
micelles and `elastic turbulence' in polymer solutions. Since both
phenomena involve anisotropic objects, their contributions to the
deviatoric stress are likely to be similar. However, these two fields
have evolved rather independently and an attempt at connecting these
fields is still lacking. We show that a minimal model in which the
anisotropic nature of the constituting objects is taken into account by
a nematic alignment tensor field reproduces several statistical features
found in rheochaos and elastic turbulence. We numerically analyse the
full non-linear hydrodynamic equations of a sheared nematic fluid under
shear stress and strain rate controlled situations, incorporating
spatial heterogeneity only in the gradient direction. For a certain
range of imposed stress and strain rates, this extended dynamical system
shows signatures of spatiotemporal chaos and transient shear banding. In
the chaotic regime the power spectra of the order parameter stress,
velocity fluctuations and the total injected power show power law
behavior and the total injected power shows a non-gaussian, skewed
probability distribution. These dynamical features bear resemblance to
elastic turbulence phenomena observed in polymer solutions. The scaling
behavior is independent of the choice of shear rate/stress controlled
method.},
 article-number = {134002},
 author = {Mandal, Rituparno and Chakrabarti, Buddhapriya and Chakraborty,
Debarshini and Dasgupta, Chandan},
 doi = {10.1088/1361-648X/ab5caa},
 eissn = {1361-648X},
 issn = {0953-8984},
 journal = {JOURNAL OF PHYSICS-CONDENSED MATTER},
 month = {MAR 27},
 number = {13},
 orcid-numbers = {Mandal, Rituparno/0000-0002-8421-7500},
 times-cited = {0},
 title = {Complex dynamics of a sheared nematic fluid},
 unique-id = {ISI:000507281500001},
 volume = {32},
 year = {2020}
}