Mathematical Sciences, University of Southampton, Southampton, UK.
Physics and Astronomy, University of Southampton, Southampton, UK.
J Colloid Interface Sci. 2017 Jul 1;497:201-206. doi: 10.1016/j.jcis.2017.03.020. Epub 2017 Mar 6.
The viscosity of complex, anisotropic fluids, such as liquid crystals or their colloidal suspensions, is characterized by a number of coefficients. Methods to measure them are, typically, sensitive only to their particular combinations, hence unable to determine them individually. Using an Ericksen-Leslie model and propagation of light through aligned layers of such materials, we show theoretically and verify experimentally how this degeneracy can be lifted by exploiting both the amplitude and frequency of the voltage applied to the cell as control parameters.
复杂各向异性流体（如液晶或其胶体悬浮液）的粘度由多个系数来表征。测量这些系数的方法通常仅对其特定组合敏感，因此无法单独确定它们。我们使用 Ericksen-Leslie 模型并通过光线在这些材料的取向层中传播，从理论上展示并通过实验验证了如何通过利用施加到电池的电压的幅度和频率作为控制参数来消除这种简并性。
