Nanobubble nucleation by pulsed laser illumination of colloidal gold nanoparticles

Sharma, Yatha (author), Ohl, Claus-Dieter (author), Rosselló, Juan Manuel (author)

This study expands upon a technique our team previously developed for generating nanobubbles on demand with a collimated pulsed laser beam. This work highlights how the controlled addition of gold nanoparticles enhances nanobubble generation efficiency in water, even at laser intensities well below the threshold for multiphoton ionization. Specifically, we investigated the influence of nanoparticles of three distinct sizes on the laser fluence threshold for bubble nucleation and the lifetime of the resultant nanobubbles. Our findings confirm that nanoparticles with a diameter of 60 nm exhibit the greatest nucleation efficiency, achieving nearly 45 % at a fluence threshold of around 70 (+/- mJ/cm2. Interestingly, nanoparticle size did not impact the nanobubble lifetime.

• Language: English
• Keywords: laser, nanobubbles, plasmonic bubbles, shockwaves, nanoparticles
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FS - Faculty of Mechanical Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2024
• Number of pages: 12 str.
• Numbering: Vol. 14, [art. no.] 30491
• PID: 20.500.12556/RUL-166012
• UDC: 620.3
• ISSN on article: 2045-2322
• DOI: 10.1038/s41598-024-81831-y
• COBISS.SI-ID: 219520003
• Publication date in RUL: 17.12.2024

Record is a part of a journal

• Title: Scientific reports
• Shortened title: Sci. rep.
• Publisher: Nature Publishing Group
• ISSN: 2045-2322
• COBISS.SI-ID: 18727432

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.