Microbubbles trigger oscillation of crystal size in solids
| Autor: | Ekaterina V. Skorb, Anna Kollath, Nadzeya Brezhneva, Daria V. Andreeva |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Physics
Oscillation Sonication General Physics and Astronomy chemistry.chemical_element Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Microstructure 01 natural sciences 0104 chemical sciences Shock (mechanics) chemistry Cavitation Shear stress Ultrasonic sensor Physical and Theoretical Chemistry Composite material 0210 nano-technology Titanium |
| Zdroj: | Physical chemistry chemical physics : PCCP. 19(8) |
| ISSN: | 1463-9084 |
| Popis: | An understanding of the nature and conditions of nonlinear processes in open systems is important for modulation of the microstructure of solids at a new level of complexity. We demonstrate that cavitation generated by high intensity ultrasound (HIUS) triggers nonlinear processes in microparticles and layers of titanium. We reveal a non-monotonic dependence of the size of grains in the treated solids on sonication time, and oscillation of titanium grain sizes vs. time of ultrasonic treatment, indicating the influence of two opposing forces: cavitation driven impact of shock heating and shear stress on surfaces. These nonlinear self-organization processes in solids promise new microstructured materials with applications among others in bio- and geosciences. |
| Databáze: | OpenAIRE |
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