Roughness-dependent Tribology Effects on Discontinuous Shear Thickening
A joint project between the Isa and Spencer groups elucidates the essential role played by surface roughness in the discontinuous shear thickening of dense colloidal suspensions.
Rough and smooth particles in a suspension: Their mixing ratio influences the time of the sudden increase in viscosity. (SEM image: Chiao-Peng Hsu, ETH Zurich)
Roughness-dependent tribology effects on discontinuous shear thickening, Chiao-Peng Hsu, Shivaprakash N. Ramakrishna, Michele Zanini, Nicholas D. Spencer, and Lucio Isa, PNAS May 1, 2018. 201801066; published ahead of print May 1, 2018. external page https://doi.org/10.1073/pnas.1801066115