Photoacoustic tweezers with a pulsed laser: theory and experiments
| Autor: | T V Malinsky, Vladimir P. Zharov, R C Kurten |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Pulsed laser
Materials science Acoustics and Ultrasonics business.industry Physics::Optics Trapping Acoustic wave Condensed Matter Physics Rotation Laser Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention Pulse (physics) chemistry.chemical_compound Optics chemistry law Tweezers Polystyrene business |
| Zdroj: | Journal of Physics D: Applied Physics. 38:2662-2674 |
| ISSN: | 1361-6463 0022-3727 |
| DOI: | 10.1088/0022-3727/38/15/019 |
| Popis: | A novel noninvasive optical technique for manipulating particles and cells is presented that utilizes laser-generated forces in an absorbing medium surrounding the particles or cells. In this technique, a laser pulse creates near-object acoustic waves, which during interaction with the objects lead to then being moved or trapped. The main optical schemes are considered, and a theory is presented for this new optical tool, namely photoacoustic (PA) tweezer with pulsed laser. The magnitudes of forces acting on polystyrene particles suspended in water were estimated as a function of the particles' properties for circular and ring geometries of the laser beam. Results of our preliminary experiments demonstrated proof that the manipulation, trapping and even rotation of cells is possible with PA tweezers. |
| Databáze: | OpenAIRE |
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