Nozzle-Free Liquid Microjetting via Homogeneous Bubble Nucleationopen access
- Authors
- Lee, T[Lee, Taehwa]; Baac, HW[Baac, Hyoung Won]; Ok, JG[Ok, Jong G.]; Youn, HS[Youn, Hong Seok]; Guo, LJ[Guo, L. Jay]
- Issue Date
- 16-Apr-2015
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW APPLIED, v.3, no.4
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW APPLIED
- Volume
- 3
- Number
- 4
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/44152
- DOI
- 10.1103/PhysRevApplied.3.044007
- ISSN
- 2331-7019
- Abstract
- We propose and demonstrate a physical mechanism for producing liquid microjets by taking an optoacoustic approach that can convert light to sound through a carbon-nanotube-coated lens, where light from a pulsed laser is converted to high momentum sound wave. The carbon-nanotube lens can focus high-amplitude sound waves to a microspot of < 100 mu m near the air-water interface from the water side, leading to microbubbles in water and subsequent microjets into the air. Laser-flash shadowgraphy visualizes two consecutive jets closely correlated with bubble dynamics. Because of the acoustic scattering from the interface, negative pressure amplitudes are significantly increased up to 80 MPa, even allowing homogeneous bubble nucleation. As a demonstration, this nozzle-free approach is applied to inject colored liquid into a tissue-mimicking gel as well as print a material on a glass substrate.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - Information and Communication Engineering > School of Electronic and Electrical Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.