(237d) Probing the Rheological, Electrical, and Microstructural Properties of Complex Fluids with Dielectric Rheosans

This poster provides an overview of recent soft-matter research performed using the Dielectric RheoSANS instrument on the small angle neutron scattering (SANS) beamlines at the National Institute of Standards and Technology (NIST) Center for Neutron Research (NCNR). We will highlight applications of the technique to answer fundamental questions in three rheologically and structurally distinct systems: 1) Understanding alignment in water-swollen reverse worm-like micelles undergoing steady-shear and large-amplitude oscillatory shear flow. 2) Flow-induced microstructure in highly viscoelastic oil/water/block copolymer microemulsions across the order-disorder-order transition from lamellar to bicontinuous to hexagonal phases. 3) Measuring rotational dynamics and aggregation of model thermoreversible, adhesive hard rod suspensions under strong shear flow.