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Published on: November 26, 2019
Force Generation in Confined Active Fluids: The Role of Microstructure
Shuvojit Paul1, Ashreya Jayaram2, N Narinder1
1Fachbereich Physik, Universität Konstanz, 78464 Konstanz, Germany.
Abstract:
We experimentally determine the force exerted by a bath of active particles onto a passive probe as a function of its distance to a wall and compare it to the measured averaged density distribution of active particles around the probe. Within the framework of an active stress, we demonstrate that both quantities are-up to a factor-directly related to each other. Our results are in excellent agreement with a minimal numerical model and confirm a general and system-independent relationship between the microstructure of active particles and transmitted forces.
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