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Elastic Flow Instability in Nanotube Suspensions



Sheng Lin-Gibson, Jai A. Pathak, E A. Grulke, Haonan Wang, Erik K. Hobbie


We report an elastic instability associated with flow-induced clustering in non-Brownian colloidal nanotubes. Rheo-optical measurements are compared with recent simulations of mechanical flocculation in sheared fiber suspensions, and we observe an anomalous first normal stress difference that correlates with a contraction of diffuse vorticity-aligned domains. The nature of the response suggests that instabilities of this type are ubiquitous in complex fluids.
Physical Review Letters
No. 4


aggregation, nanotubes, non-brownian, shear


Lin-Gibson, S. , Pathak, J. , Grulke, E. , Wang, H. and Hobbie, E. (2004), Elastic Flow Instability in Nanotube Suspensions, Physical Review Letters, [online], (Accessed February 29, 2024)
Created December 31, 2003, Updated October 12, 2021