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2020 IPS Conference
Study Materials
Corporate Members
Home
About/Contact
Newsletters
Events/Seminars
2020 IPS Conference
Study Materials
Corporate Members
We report the observation of a large-distance intermediate response in an experimental system of entangled F-actin gels. The tools of 1-point and 2-point microrheology were used to characterize the local and distance-dependent responses of the actin networks, respectively. The 2-point response at intermediate distances, arising from the effect of mass displacement rather than momentum diffusion, is enhanced by the much softer local microenvironment of the tracers compared to the bulk properties of the gel. Consequently, the intermediate behavior sets in at particle separations much larger than the mesh size, ξ, of the actin gel. Results from several networks with different mesh sizes will be presented, emphasizing this inherent property of complex fluids and its relation to ξ.