Direct Observation of Wetting and Diffusion in the Hydrophobic Interior of Silica Nanotubes
| Autor: | Sang Bok Lee, Douglas S. English, Louis Bivona, Charles J. Shook, Kenji Okamoto |
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| Rok vydání: | 2004 |
| Předmět: |
Nanotube
Materials science Photoluminescence Mechanical Engineering Diffusion Fluorescence recovery after photobleaching Bioengineering Nanotechnology General Chemistry Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Condensed Matter::Soft Condensed Matter Condensed Matter::Materials Science Template reaction Chemical engineering General Materials Science Wetting Nanotube membrane Dewetting |
| Zdroj: | Nano Letters. 4:233-239 |
| ISSN: | 1530-6992 1530-6984 |
| Popis: | Fluorescence microscopy techniques are used to investigate diffusion and wetting at the interior surface of template-synthesized silica nanotubes. Imaging of individual nanotubes reveals that complete modification of the nanotube interiors with hydrophobic ligands is attained during nanotube synthesis. Fluorescence recovery after photobleaching experiments show that (1) spontaneous dewetting of the nanotube interior occurs when the immersing solvent is displaced with pure water and (2) anomalously slow diffusion is observed at the nanotube interior surface. |
| Databáze: | OpenAIRE |
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