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Jeremie Palacci, Physics Department, UCSD – APS Colloquium

February 4, 2019 @ 4:00 pm - 5:00 pm

Title: Carving non-equilibrium pathways to control self-assembly

Abstract: Active particles are microscopic particles, which can inject energy locally and made available by recent progress in colloidal science. They are ideal “pump-probes” to explore the emergent properties in non-equilibrium soft systems and control the behavior of soft matter and self-assembly at the microscale. In this talk, I will demonstrate how we can use dissipative building blocks to control self-assembly and show the robust formation of dynamical superstructures using active particles that consume fuel to carve non-equilibrium pathways. Using tailored particles, we will build self-spinning microgears and demonstrate that non-equilibrium phenomena can be harnessed to shape interactions and form hierarchical structures [1]. Next, I will show how we can active particles added to a material to regulates its activity internally and boost the annealing of a colloidal monolayer [2]. It opens a broad range of novel opportunities to thermal treatments, where the properties of matter are not controlled macroscopically but microscopically and in real time by active dopants.

[1] Aubret et al, Nature Physics, 2018

[2] Ramananarivo et al, submitted

Details

Date:
February 4, 2019
Time:
4:00 pm - 5:00 pm
Event Category:

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