The Applicability of Acoustic Wave Propagation Models to Silica Sols and Gels
| Autor: | Andrew K. Holmes, R. E. Challis |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Range (particle radiation)
Materials science Silica gel business.industry Wave propagation Scattering Acoustic wave Molecular physics Surfaces Coatings and Films Electronic Optical and Magnetic Materials Biomaterials chemistry.chemical_compound Colloid and Surface Chemistry Optics chemistry Particle Phase velocity business Acoustic attenuation |
| Zdroj: | Journal of Colloid and Interface Science. 216:50-58 |
| ISSN: | 0021-9797 |
| DOI: | 10.1006/jcis.1999.6301 |
| Popis: | Acoustic attenuation and phase velocity in the frequency range 2-50 MHz have been measured in a series of silica sols and gels with particle sizes in the range 12-30 nm, and concentrations in the range 5-40% (w/w). Results have been compared with both scattering and hydrodynamic models of acoustic propagation in colloids. Differences between measured and simulated results indicate that present models are inadequate for very small particle sizes and small particle separations (50 nm), where very high number concentrations of scatterers are present. Copyright 1999 Academic Press. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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