title: Microbubbles trigger oscillation of crystal size in solids.
abstract: 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.
authors.affiliation: Physical Chemistry II, University of Bayreuth, Universitätsstraße 30, 95440 Bayreuth, Germany.
authors.forename: Anna
authors.initials: A
authors.lastname: Kollath
authors.affiliation: Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14424 Potsdam, Germany.
authors.forename: Nadzeya
authors.initials: N
authors.lastname: Brezhneva
authors.affiliation: Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14424 Potsdam, Germany and Laboratory of Solution Chemistry of Advanced Materials and Technologies, ITMO University, 197101 St. Petersburg, Russian Federation.
authors.forename: Ekaterina V
authors.initials: EV
authors.lastname: Skorb
authors.affiliation: Center for Soft and Living Matter, Institute for Basic Science, Ulsan National Institute of Science and Technology, 44919 Ulsan, Republic of Korea. daria.baeumler@gmail.com.
authors.forename: Daria V
authors.identifier: http://orcid.org/0000-0003-0273-2064
authors.initials: DV
authors.lastname: Andreeva