title: Impact of high-frequency ultrasound on nanocomposite microcapsules: in silico and in situ visualization.
abstract: The impact of high-frequency (1.2 MHz) ultrasound with a power density of 0.33 W cm(-2) on microcapsule nanocomposite shells with embedded zinc oxide nanoparticles was investigated by exploring modeling simulations and direct visualization. For the first time the sonication effect has been monitored in situ on individual microcapsules upon exposure of their aqueous suspension to ultrasound. The stress distribution on the microcapsule shell for the impact of ultrasound with high (1.2 MHz) and low (20 kHz) frequency at two fixed intensities (0.33 and 30 W cm(-2)) has been modeled. As shown in silico and experimentally the nanocomposite microcapsules were destroyed more effectively by the action of high-frequency (1.2 MHz) ultrasound in comparison to the low frequency (20 kHz) one with the same power density.
authors.affiliation: Saratov State University, Astrakhanskaya Street 83, 410012 Saratov, Russia. gorinda@mail.ru and Taras Shevchenko National University of Kyiv, Physics Faculty, Department of Molecular Physics, 64/13, Volodymyrska Street, Kyiv, 01601, Ukraine.
authors.forename: V F
authors.initials: VF
authors.lastname: Korolovych
authors.affiliation: Saratov State University, Astrakhanskaya Street 83, 410012 Saratov, Russia. gorinda@mail.ru.
authors.forename: O A
authors.initials: OA
authors.lastname: Grishina
authors.affiliation: Saratov State University, Astrakhanskaya Street 83, 410012 Saratov, Russia. gorinda@mail.ru.
authors.forename: O A
authors.initials: OA
authors.lastname: Inozemtseva
authors.affiliation: Saratov State University, Astrakhanskaya Street 83, 410012 Saratov, Russia. gorinda@mail.ru.
authors.forename: A V
authors.initials: AV
authors.lastname: Selifonov
authors.affiliation: Saratov State University, Astrakhanskaya Street 83, 410012 Saratov, Russia. gorinda@mail.ru.
authors.forename: D N
authors.initials: DN
authors.lastname: Bratashov
authors.affiliation: Saratov State University, Astrakhanskaya Street 83, 410012 Saratov, Russia. gorinda@mail.ru.
authors.forename: S G
authors.initials: SG
authors.lastname: Suchkov
authors.affiliation: Taras Shevchenko National University of Kyiv, Physics Faculty, Department of Molecular Physics, 64/13, Volodymyrska Street, Kyiv, 01601, Ukraine.
authors.forename: L A
authors.initials: LA
authors.lastname: Bulavin
authors.affiliation: Saratov State University, Astrakhanskaya Street 83, 410012 Saratov, Russia. gorinda@mail.ru.
authors.forename: O E
authors.initials: OE
authors.lastname: Glukhova
authors.affiliation: School of Engineering & Materials Science, Queen Mary University of London, Mile End Road, London, E1 4NS, UK.
authors.forename: G B
authors.initials: GB
authors.lastname: Sukhorukov
authors.affiliation: Saratov State University, Astrakhanskaya Street 83, 410012 Saratov, Russia. gorinda@mail.ru.
authors.forename: D A
authors.initials: DA
authors.lastname: Gorin