Daniel Svenšek (Avtor), Harald Pleiner (Avtor), Helmut R. Brand (Avtor)

Povzetek

It is known that some flagellated bacteria like Serratia marcescens, when deposited and affixed onto a surface to form a “bacterial carpet”, self-organize in a collective motion of the flagella that is capable of pumping fluid through microfluidic channels. We set up a continuum model comprising two macroscopic variables that is capable of describing this self-organization mechanism as well as quantifying it to the extent that an agreement with the experimentally observed channel width dependence of the pumping is reached. The activity is introduced through a collective angular velocity of the helical flagella rotation, which is an example of a dynamic macroscopic preferred direction. Our model supports and quantifies the view that the self-coordination is due to a positive feedback loop between the bacterial flagella and the local flow generated by their rotation. Moreover, our results indicate that this biological active system is operating close to the self-organization threshold.

Ključne besede

dinamika tekočin;mikrofluidika;bakterije;fluid dynamics;microfluidics;bacteria;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FMF - Fakulteta za matematiko in fiziko
UDK: 532.5
COBISS: 3289188 Povezava se bo odprla v novem oknu
ISSN: 1744-683X
Št. ogledov: 652
Št. prenosov: 271
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: dinamika tekočin;mikrofluidika;bakterije;
Konec prepovedi (OpenAIRE): 2020-01-23
Strani: str. 2032-2042
Letnik: ǂVol. ǂ15
Zvezek: ǂiss. ǂ9
Čas izdaje: 2019
DOI: 10.1039/C9SM00023B
ID: 11037297