Imperial College London
Alternate

ProfessorPeterTörök

Faculty of Natural Sciences, Department of Physics

Visiting Professor
 
 
 
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Contact

 

+44 (0)20 7594 7753peter.torok Website

 
 
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Location

 

609Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Karampatzakis:2017:10.1038/s41522-017-0028-z,
author = {Karampatzakis, A and Song, CZ and Allsopp, LP and Filloux, A and Rice, SA and Cohen, Y and Wohland, T and Török, P},
doi = {10.1038/s41522-017-0028-z},
journal = {NPJ Biofilms Microbiomes},
title = {Probing the internal micromechanical properties of Pseudomonas aeruginosa biofilms by Brillouin imaging.},
url = {http://dx.doi.org/10.1038/s41522-017-0028-z},
volume = {3},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Biofilms are organised aggregates of bacteria that adhere to each other or surfaces. The matrix of extracellular polymeric substances that holds the cells together provides the mechanical stability of the biofilm. In this study, we have applied Brillouin microscopy, a technique that is capable of measuring mechanical properties of specimens on a micrometre scale based on the shift in frequency of light incident upon a sample due to thermal fluctuations, to investigate the micromechanical properties of an active, live Pseudomonas aeruginosa biofilm. Using this non-contact and label-free technique, we have extracted information about the internal stiffness of biofilms under continuous flow. No correlation with colony size was found when comparing the averages of Brillouin shifts of two-dimensional cross-sections of randomly selected colonies. However, when focusing on single colonies, we observed two distinct spatial patterns: in smaller colonies, stiffness increased towards their interior, indicating a more compact structure of the centre of the colony, whereas, larger (over 45 μm) colonies were found to have less stiff interiors.
AU  - Karampatzakis,A
AU  - Song,CZ
AU  - Allsopp,LP
AU  - Filloux,A
AU  - Rice,SA
AU  - Cohen,Y
AU  - Wohland,T
AU  - Török,P
DO  - 10.1038/s41522-017-0028-z
PY  - 2017///
SN  - 2055-5008
TI  - Probing the internal micromechanical properties of Pseudomonas aeruginosa biofilms by Brillouin imaging.
T2  - NPJ Biofilms Microbiomes
UR  - http://dx.doi.org/10.1038/s41522-017-0028-z
UR  - http://hdl.handle.net/10044/1/50653
VL  - 3
ER  -
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