Abstract
We discuss the application of optical trapping techniques to droplets, both in air (aerosols) and in fluid (emulsions). We show the holographic optical manipulation of aerosols and how this can be used to transfer orbital angular momentum to airborne particles. We demonstrate new types of traps for aerosols in the form of dual beam fibre traps and compare the trapping efficiency of IR and visible lasers. We discuss some of the interesting dynamics that can be observed when trapping airborne particles and how this appears to differ from conventional liquid based devices. We also examine how holographic optical trapping can be used to facilitate droplet manipulation in another liquid phase. We conclude with a discussion of the difficulties associated with trapping particles in air and possible solutions and well as look at some of the anticipated applications of such work, in particular in digital microfluidics.
Original language | English |
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Title of host publication | Optical Trapping and Optical Micromanipulation IV |
Editors | Kishan Dholakia, Gabriel C. Spalding |
Place of Publication | Bellingham |
Publisher | SPIE-International Society for Optical Engineering |
Number of pages | 13 |
ISBN (Print) | 9780819467928 |
DOIs | |
Publication status | Published - 2007 |
Event | SPIE Optics+Photonics 2007: Optical Trapping and Optical Micromanipulation IV - San Diego Convention Center, San Diego, United States Duration: 26 Aug 2007 → 29 Aug 2007 http://spie.org/x16063.xml |
Publication series
Name | Proceedings of SPIE |
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Publisher | SPIE |
Volume | 6644 |
Conference
Conference | SPIE Optics+Photonics 2007: Optical Trapping and Optical Micromanipulation IV |
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Country/Territory | United States |
City | San Diego |
Period | 26/08/07 → 29/08/07 |
Internet address |
Keywords
- optical tweezers
- laser tweezers
- aerosols
- holographic optical tweezers
- Brownian dynamics
- AEROSOL DROPLETS
- RADIATION PRESSURE
- PARTICLES
- LEVITATION
- TWEEZERS
- SPECTROSCOPY
- GROWTH
- LIGHT
- SIZE
- AIR