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Accueil du site > Séminaires > Archives séminaires > Séminaires 2017 > Séminaire MSC. 23 octobre 2017. Wilson Poon (University of Edinburgh) : "Painting with bacteria : using E. coli for templated supra-colloidal self assembly" .

Séminaire MSC. 23 octobre 2017. Wilson Poon (University of Edinburgh) : "Painting with bacteria : using E. coli for templated supra-colloidal self assembly"

Sauf mention contraire, les séminaires et les soutenances se déroulent à 11h30 en salle 454A du bâtiment Condorcet.


Wilson Poon, Professor of Natural Philosophy School of Physics & Astronomy The University of Edinburgh

Painting with bacteria : using E. coli for templated supra-colloidal self assembly

Abstract : Motile bacteria are ’active colloids’ - living particles that are capable of self propulsion. Active colloids open up a new world of possibilities of self assembling structures using ’bricks’ on the microscale. I shall briefly introduce the general field of active colloids, before focussing on our recent experiments using swimming Escherichia coli bacteria as the ’bricks’ in self assembling quasi-two-dimensional structures (’painting’). Our bacteria are genetically modified so that they only swim when illuminated, so that we can use external light field patterns to direct their motion, and therefore assemble structures. I will show how to ’tune’ the bacteria so that it becomes possible to alter the assembled structures in real time on a supra-colloidal scale, and also use these bacteria to prove a theorem in the physics of active colloids.


Contact : Équipe séminaires / Seminar team - Published on / Publié le 16 octobre 2017


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