Polymer-disordered liquid crystals: susceptibility to an electric field.
When nematic liquid crystals are embedded in random polymer networks, the disordered environment disrupts the long-range order, producing a glassy state. If an electric field is applied, it induces large and fairly temperature-independent orientational order. To understand the experiments, we simulate a liquid crystal in a disordered polymer network, visualize the domain structure, and calculate the response to a field. Furthermore, using an Imry-Ma-like approach we predict the domain size and estimate the field-induced order. The simulations and analytic results agree with each other, and suggest how the materials can be optimized for electro-optic applications.
Liquid Crystal Institute, Kent State University, Kent, Ohio 44242, USA.
Lena M
LM
Lopatina
Liquid Crystal Institute, Kent State University, Kent, Ohio 44242, USA.
Jonathan V
JV
Selinger