Journal article
Theory and experiment on particle trapping and manipulation via optothermally generated bubbles
Lab on a chip, Vol.14(2), pp.384-391
01/21/2014
DOI: 10.1039/c3lc50748c
PMCID: PMC3998756
PMID: 24276624
Abstract
We present a theoretical analysis and experimental demonstration of particle trapping and manipulation around optothermally generated bubbles. We show that a particle located within 500 μm of a surface bubble can be attracted towards a bubble by the drag force resulting from a convective flow. Once the particle comes in contact with the bubble’s surface, a balance between surface tension forces and pressure forces traps the particle on the bubble surface, allowing the particle to move with the bubble without detaching. The proposed mechanism is confirmed by computational fluid dynamics simulations, force calculations, and experiments. Based on this mechanism, we experimentally demonstrated a novel approach for manipulating microparticles via optothermally generated bubbles. Using this approach, randomly distributed microparticles were effectively collected and carried to predefined locations. Single particles were also manipulated along prescribed trajectories. This bubble-based particle trapping and manipulation technique can be useful in applications such as micro assembly, particle concentration, and high-precision particle separation.
Details
- Title: Subtitle
- Theory and experiment on particle trapping and manipulation via optothermally generated bubbles
- Creators
- Chenglong Zhao - Pennsylvania State UniversityYuliang Xie - Pennsylvania State UniversityZhangming Mao - Pennsylvania State UniversityYanhui Zhao - Pennsylvania State UniversityJoseph Rufo - Pennsylvania State UniversityShikuan Yang - Pennsylvania State UniversityFeng Guo - Pennsylvania State UniversityJohn D Mai - City University of Hong KongTony Jun Huang - Pennsylvania State University
- Resource Type
- Journal article
- Publication Details
- Lab on a chip, Vol.14(2), pp.384-391
- DOI
- 10.1039/c3lc50748c
- PMID
- 24276624
- PMCID
- PMC3998756
- ISSN
- 1473-0197
- eISSN
- 1473-0189
- Language
- English
- Date published
- 01/21/2014
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering
- Record Identifier
- 9984196990802771
Metrics
25 Record Views