Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session GG09: V: Multicellular Phenomena I
12:30 PM–2:30 PM,
Monday, March 20, 2023
Room: Virtual Room 9
Sponsoring
Unit:
DBIO
Chair: Trung Phan, Yale University
Abstract: GG09.00002 : What shapes bacterial biofilms? A Physics perspective.*
12:42 PM–12:54 PM
Presenter:
Eleonora Secchi
(ETH Zurich)
Author:
Eleonora Secchi
(ETH Zurich)
Our work aims to understand how the material properties of the biofilm matrix determine biofilm morphology and mechanical properties. We present examples of biofilms grown in different environmental conditions, ranging from the air-solid interface of agar plates to surfaces exposed to fluid flow and porous media, and by different bacterial species. In each case, we show that the interplay between biology-driven forces, i.e., growth, and physics-driven ones, i.e., surface adhesion, osmotic pressure, and shear stress, controls biofilm morphology, rheology, and, ultimately, affects the physiological protective function of biofilms. By shedding light on this interplay, we can control biofilm development, showing the prominent role physics can play in developing novel antimicrobial and antifouling strategies.
*The authors acknowledge support from SNSF PRIMA grant 179834.
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