Evidence of laser-induced nanobubble formation mechanism in water

Jelenčič, Miha (avtor), Orthaber, Uroš (avtor), Mur, Jaka (avtor), Petelin, Jaka (avtor), Petkovšek, Rok (avtor)

Principles of laser-induced nanobubble formation in water are studied and presented. Nanobubbles were generated by laser light at intensities below threshold for laser-induced breakdown and subsequently expanded by a rarefaction wave to facilitate their observation and analysis. Different methods were used to study nanobubble formation and characteristics. Firstly, probability of nanobubble formation as a function of water sample purity was examined. Secondly, relation between laser fluence at different wavelengths and the number of generated nanobubbles was investigated. Thirdly, measurements of nanobubble lifetime were conducted indicating a contradiction to the Epstein-Plesset equation-based prediction of free bubble dissociation. Accumulated evidence suggests that the presence of physical impurities is a prerequisite for nanobubble formation. Consequently, a lack of impurities results in the absence of nanobubbles in contrast to assumptions by existing studies. The findings presented in this paper provide new insights into the fundamental properties of laser-induced nanobubbles in water.

• Jezik: Angleški jezik
• Ključne besede: laser-induced bubbles, nanobubbles, bubble nucleation, shock waves, Epstein-Plesset equation
• 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: 2023
• Št. strani: 9 str.
• Številčenje: Vol. 99, art. 106537
• PID: 20.500.12556/RUL-148207
• UDK: 532.528
• ISSN pri članku: 1350-4177
• DOI: 10.1016/j.ultsonch.2023.106537
• COBISS.SI-ID: 160337923
• Datum objave v RUL: 01.08.2023

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-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
• Opis: Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: lasersko inducirani mehurčki, nanomehurčki, nukleacija mehurčkov, udarni valovi, Epstein-Plessetova enačba

Projekti

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P2-0270
• Naslov: Proizvodni sistemi, laserske tehnologije in spajanje materialov

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: J2-3057
• Naslov: Kontrolirano generiranje mikromehurčkov in raziskave njihove fizike za uporabo v kemiji, biologiji in medicini