TIFR
Department of Chemical Sciences
School of Natural Sciences

May 1, 2019 at 2.30 pm in AG-69

Title :

Buoyant Microcapsules: Simple motility to Complex Autonomous Behavior

Abstract :

Nature has always been a great source of inspiration for the design of artificial materials with improved hierarchical organization, superior properties and smart functions. In this age of artificial intelligence and smart systems, chemists are increasingly looking to design active and adaptive materials taking inspiration from the various biological processes and their self-regulatory mechanisms which make ‘life’ possible. In this talk, I will illustrate with an example of a microcapsule with an entrapped gas bubble whose motility is governed by buoyancy forces, how we can design complex autonomous behavior into relatively simple systems. Our results show that microcapsules can be propelled by an active control of buoyancy forces and this buoyant motility can be used to trigger chemical reactions, simulate self-sorting behavior in microcapsule communities and achieve complex oscillatory motility.

References:

  1. B. A. Grzybowski & W. T. S. Huck, The Nanotechnology of Life-inspired Systems, Nat. Nanotechnol. 2016, 11, 585.
  2. B. V. V. S. P. Kumar, A. J. Patil & S. Mann, Enzyme-powered motility in buoyant organoclay/DNA protocells, Nat. Chem. 2018, 10, 1154.
  3. L. Rodriguez-Arco, B. V. V. S. P. Kumar, M. Li, A. J. Patil & S. Mann, Modulation of Higher-order Behaviour in Model Protocell Communities by Artificial Phagocytosis, Angew. Chem. Int. Ed. 2019, DOI: 10.1002/ange.201901469.