Microbubbles trigger oscillation of crystal size in solids

被引:20
作者
Kollath, Anna [1 ]
Brezhneva, Nadzeya [2 ]
Skorb, Ekaterina V. [2 ,3 ]
Andreeva, Daria V. [4 ]
机构
[1] Univ Bayreuth, Phys Chem 2, Univ Str 30, D-95440 Bayreuth, Germany
[2] Max Planck Inst Colloids & Interfaces, Muhlenberg 1, D-14424 Potsdam, Germany
[3] ITMO Univ, Lab Solut Chem Adv Mat & Technol, St Petersburg 197101, Russia
[4] Ulsan Natl Inst Sci & Technol, Inst Basic Sci, Ctr Soft & Living Matter, Ulsan 44919, South Korea
关键词
HIGH-INTENSITY ULTRASOUND; PICOSECOND SONOLUMINESCENCE; CAVITATION; TITANIUM; ALLOYS; COALESCENCE; CATALYSTS; SURFACES; WATER; LIFE;
D O I
10.1039/c6cp07456a
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
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.
引用
收藏
页码:6286 / 6291
页数:6
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