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Liposome destruction by a collapsing cavitation microbubble: a numerical study
ID
Zevnik, Jure
(
Avtor
),
ID
Dular, Matevž
(
Avtor
)
PDF - Predstavitvena datoteka,
prenos
(3,11 MB)
MD5: 290DB422DFD576AC22C6B9A8DD3C3574
URL - Izvorni URL, za dostop obiščite
https://www.sciencedirect.com/science/article/pii/S1350417721002480
Galerija slik
Izvleček
Hydrodynamic cavitation poses as a promising new method for wastewater treatment as it has been shown to be able to eradicate bacteria, inactivate viruses, and destroy other biological structures, such as liposomes. Although engineers are already commercializing devices that employ cavitation, we are still not able to answer the fundamental question: What exactly are the damaging mechanisms of hydrodynamic cavitation in various ap-plications? In this light, the present paper numerically addresses the interaction between a single cavitation microbubble and a nearby lipid vesicle of a similar size. A coupled fluid-structure interaction model is employed, from which three critical modes of vesicle deformation are identified and temporally placed in relation to their corresponding driving mechanisms: (a) unilateral stretching at the waist of the liposome during the first bubble collapse and subsequent shock wave propagation, (b) local wrinkling at the tip until the bubble rebounds, and (c) bilateral stretching at the tip of the liposome during the phase of a second bubble contraction. Here, unilateral and bilateral stretching refer to the local in-plane extension of the bilayer in one and both principal directions, respectively. Results are discussed with respect to critical dimensionless distance for vesicle poration and rupture. Liposomes with initially equilibrated envelopes are not expected to be structurally compromised in cases with (delta)>1.0, when a nearby collapsing bubble is not in their direct contact. However, the critical dimensionless distance for the case of an envelope with pre-existing pores is identified at (delta)=1.9. Additionally, the influence of liposome-bubble size ratio is addressed, from which a higher potential of larger bubbles for causing stretching- induced liposome destruction can be identified.
Jezik:
Angleški jezik
Ključne besede:
bubble dynamics
,
cavitation
,
fluid-structure interaction
,
shock wave emission
,
giant lipid vesicles
,
DOPC
Vrsta gradiva:
Članek v reviji
Tipologija:
1.01 - Izvirni znanstveni članek
Organizacija:
FS - Fakulteta za strojništvo
Status publikacije:
Objavljeno
Različica publikacije:
Objavljena publikacija
Leto izida:
2021
Št. strani:
Str. 1-15
Številčenje:
Vol. 78, art. 105706
PID:
20.500.12556/RUL-128926
UDK:
532.528:577.115.5
ISSN pri članku:
1350-4177
DOI:
10.1016/j.ultsonch.2021.105706
COBISS.SI-ID:
73323779
Datum objave v RUL:
18.08.2021
Število ogledov:
1424
Število prenosov:
177
Metapodatki:
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Objavi na:
Gradivo je del revije
Naslov:
Ultrasonics Sonochemistry
Skrajšan naslov:
Ultrason. sonochem.
Založnik:
Butterworth-Heinemann, Elsevier Science
ISSN:
1350-4177
COBISS.SI-ID:
707668
Licence
Licenca:
CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:
http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:
To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
Začetek licenciranja:
31.07.2021
Sekundarni jezik
Jezik:
Slovenski jezik
Ključne besede:
dinamika mehurčkov
,
kavitacija
,
interakcija fluid-struktura
,
emisija udarnih valov
,
lipidni vezniki
,
DOPC
Projekti
Financer:
EC - European Commission
Program financ.:
H2020
Številka projekta:
771567
Naslov:
An investigation of the mechanisms at the interaction between cavitation bubbles and contaminants
Akronim:
CABUM
Financer:
ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:
P2-0401
Naslov:
Energetsko strojništvo
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