University of Dundee

"The Geometry of Colonization"

Event Date: 
Wednesday, February 13, 2019 - 13:00 to 14:00
Event Location: 
MSI Small Lecture Theatre
Host: 
Dr Rastko Sknepnek
Event Speaker: 
Luca Giomi
Institution: 
University of Leiden, Physics Department
Event Type: 
Seminar
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All Welcome

 

Abstract

 

 

Bacteria are among the most common and resilient forms of life on Earth, and their extraordinary surface-colonizing ability represents a central topic in microbiology, biophysics, and materials science. This process typically starts with few cells undergoing a phenotypical switch from the plantonik (i.e. swimming) to the sessile (i.e. surface-associated) lifestyle and continue via the formation of an exponentially growing monolayer of tightly packed and partially ordered cells. Colonies originating from a single bacterium, initially develops in the form of a flat and circularly symmetric monolayer and, after reaching a critical population, invade the three-dimensional space forming stacks of concentric disk-shaped layers. In this talk I will discuss some recent theoretical progress toward understanding the geometry of bacterial monolayers as well as the statistical mechanics underpinning the mono-to-multilayer transition.