Optical bottles: A quantitative analysis of optically confined nanoparticle ensembles in suspension
| Autor: | Seongmin Park, H. Daniel Ou-Yang, Joseph Junio, Mahn Won Kim |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
genetic structures
Chemistry business.industry Physics::Optics Nanoparticle Nanotechnology General Chemistry Condensed Matter Physics Laser eye diseases law.invention Suspension (chemistry) Condensed Matter::Soft Condensed Matter Colloid chemistry.chemical_compound Optical tweezers law Materials Chemistry Optoelectronics Particle Optical radiation sense organs Polystyrene business |
| Zdroj: | Solid State Communications. 150:1003-1008 |
| ISSN: | 0038-1098 |
| DOI: | 10.1016/j.ssc.2010.01.018 |
| Popis: | We present a novel method, an optical bottle, that uses a focused laser beam to trap and a second laser to analyze optically confined multiple nanoparticles. A theoretical framework based on the mechanical equilibrium of the optical radiation pressure produced by the focused laser beam and the osmotic pressure produced by the enriched particle concentration in the optical trap is developed for analyzing the ensemble behavior of the optically confined nanoparticles. Experiments were conducted for fluorescently labeled polystyrene nanospheres and unilamellar phospholipid vesicles to determine the optical trapping energy of individual particles as well as the osmotic compressibility of the colloids. The new method is not limited by the particle concentration and is relatively easy to implement. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect