Details

Autor(en) / Beteiligte

• Morris, Ryan J
• Phan, Trung V
• Black, Matthew
• Lin, Ke-Chih
• Kevrekidis, Ioannis G
• Bos, Julia A
• Austin, Robert H

Titel

Bacterial population solitary waves can defeat rings of funnels

Ist Teil von

• New journal of physics, 2017-03, Vol.19 (3), p.35002

Ort / Verlag

Bristol: IOP Publishing

Erscheinungsjahr

2017

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• We have constructed a microfabricated circular corral for bacteria made of rings of concentric funnels which channel motile bacteria outwards via non-hydrodynamic interactions with the funnel walls. Initially bacteria do move rapidly outwards to the periphery of the corral. At the edge, nano-slits allow for the transport of nutrients into the device while keeping the bacteria from escaping. After a period of time in which the bacteria increase their cell density in this perimeter region, they are then able to defeat the physical constrains of the funnels by launching back-propagating collective waves. We present the basic data and some nonlinear modeling which can explain how bacterial population waves propagate through a physical funnel, and discuss possible biological implications.