Three-Dimensional Real-Time Tracking of Nanoparticles at an Oil–Water Interface
| Autor: | Andrew J. Berglund, Kan Du, J. Alexander Liddle |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Range (particle radiation)
Time Factors Materials science Water Nanoparticle Nanotechnology Surfaces and Interfaces Condensed Matter Physics Tracking (particle physics) Diffusion Motion Chemical physics Drag Electrochemistry Nanoparticles Polystyrenes Emulsions General Materials Science Microemulsion Particle size Diffusion (business) Oils Spectroscopy Fluorescent Dyes Complex fluid |
| Zdroj: | Langmuir. 28:9181-9188 |
| ISSN: | 1520-5827 0743-7463 |
| DOI: | 10.1021/la300292r |
| Popis: | Single-particle tracking with real-time feedback control can be used to study three-dimensional nanoparticle transport dynamics. We apply the method to study the behavior of adsorbed nanoparticles at a silicone oil–water interface in a microemulsion system over a range of particles sizes from 24 nm to 2000 nm. The diffusion coefficient of large particles (>200 nm) scales inversely with particle size, while smaller particles exhibit an unexpected increase in drag force at the interface. The technique can be applied in the future to study three-dimensional dynamics in a range of systems, including complex fluids, gels, biological cells, and geological media. |
| Databáze: | OpenAIRE |
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