TY - JOUR
T1 - Predicting Steady Shear Rheology of Condensed-Phase Monomolecular Films at the Air-Water Interface
AU - Raghunandan, Aditya
AU - Hirsa, Amir H.
AU - Underhill, Patrick T.
AU - Lopez, Juan M.
N1 - Publisher Copyright:
© 2018 American Physical Society.
PY - 2018/10/17
Y1 - 2018/10/17
N2 - Predicting the non-Newtonian shear response of soft interfaces in biophysical systems and engineered products has been compromised by the use of linear (Newtonian) constitutive equations. We present a generalized constitutive equation, with tractable material properties, governing the response of Newtonian and non-Newtonian interfaces subjected to a wide range of steady shear. With experiments spanning six decades of shear rate, we capture and unify divergent reports of shear-thinning behavior of monomolecular films of the lipid dipalmitoylphosphatidylcholine, the primary constituent of mammalian cell walls and lung surfactant, at near-physiological packing densities.
AB - Predicting the non-Newtonian shear response of soft interfaces in biophysical systems and engineered products has been compromised by the use of linear (Newtonian) constitutive equations. We present a generalized constitutive equation, with tractable material properties, governing the response of Newtonian and non-Newtonian interfaces subjected to a wide range of steady shear. With experiments spanning six decades of shear rate, we capture and unify divergent reports of shear-thinning behavior of monomolecular films of the lipid dipalmitoylphosphatidylcholine, the primary constituent of mammalian cell walls and lung surfactant, at near-physiological packing densities.
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U2 - 10.1103/PhysRevLett.121.164502
DO - 10.1103/PhysRevLett.121.164502
M3 - Article
C2 - 30387637
AN - SCOPUS:85055165011
SN - 0031-9007
VL - 121
JO - Physical Review Letters
JF - Physical Review Letters
IS - 16
M1 - 164502
ER -