23 May 2019 from 15:00 to 17:00

Debye Visiting Chair Lecture Series

Debye Visiting Chair - Lecture 2: Actuated ‘hairy’ surfaces: En route for adaptive, homeostatic materials

Debye Institute for Nanomaterials Science, Debye Visiting Chair, Joanna Aizenberg
Prof. Joanna Aizenberg

This is the second lecture in a series of three lectures by Debye Visiting Chair Joanna Aizenberg from Harvard University.

Abstract

Dynamic structures that respond reversibly to changes in their environment are central to self-regulating thermal and lighting systems, targeted drug delivery, sensors, and self-propelled locomotion. Since an adaptive change requires energy input, an ideal strategy would be to design materials that harvest energy directly from the environment and use it to drive an appropriate response. This lecture will present the design of a novel class of reconfigurable materials that use ‘hairy’ surfaces bearing arrays of nanostructures put in motion by environment-responsive gels. Their unique hybrid architecture, and chemical and mechanical properties can be optimized to confer a wide range of adaptive behaviors. Using both experimental and modeling approaches, we are developing these hydrogel-actuated integrated responsive systems (HAIRS) as new materials with reversible optical and wetting properties, as a multifunctional platform for controlling cell differentiation and function, and as a first homeostatic system with autonomous self-regulation.

Start date and time
23 May 2019 15:00
End date and time
23 May 2019 17:00
Entrance fee
Free of charge