Elastic Flow Instability in Nanotube Suspensions

作者：Sheng Lin‐Gibson, Jai A. Pathak, Eric A. Grulke, Hanyan Wang, Erik K. Hobbie · 发表于：Physical Review Letters · 年份：2004 · DOI：10.1103/physrevlett.92.048302 · 被引用次数：167 · 研究领域：Rheology and Fluid Dynamics Studies、Material Dynamics and Properties、Microfluidic and Bio-sensing Technologies

We report an elastic instability associated with flow-induced clustering in semidilute non-Brownian colloidal nanotubes. Rheo-optical measurements are compared with simulations of mechanical flocculation in sheared fiber suspensions, and the evolving structure is characterized as a function of confinement and shear stress. The transient rheology is correlated with the evolution of highly elastic vorticity-aligned aggregates, with the underlying instability being somewhat ubiquitous in complex fluids.