Colloidal Rings in a Liquid Mixture
| Autor: | R. M. Muruganathan, T. M. Fischer, Yilei Zhang, Lars Egil Helseth |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
endocrine system
Range (particle radiation) Capillary action digestive oral and skin physiology Nanotechnology Surfaces and Interfaces Decane Condensed Matter Physics complex mixtures Magnetic field chemistry.chemical_compound Paramagnetism Colloid chemistry Chemical physics Emulsion Electrochemistry General Materials Science Self-assembly Spectroscopy |
| Zdroj: | Langmuir. 21:7271-7275 |
| ISSN: | 1520-5827 0743-7463 |
| DOI: | 10.1021/la050247f |
| Popis: | We investigate the self-assembly of colloidal particles on microscopic decane droplets in water and show that, by use of paramagnetic colloids, it is possible to assemble ringlike structures that can be controlled with a magnetic field. Moreover, the use of paramagnetic colloids allows us to determine the attractive forces between the colloids located at the three-phase contact line between decane, water, and air. The attractive force is in the femtonewton range and is attributed to capillary interactions due to interface deformations. When the liquid emulsion dries on a glass slide, we observe solid deposits in the form of microscopic rings of varying diameters. |
| Databáze: | OpenAIRE |
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