Acoustical hooks: A new subwavelength self-bending beam

Acoustical hooks: A new subwavelength self-bending beam

Bibliographic Details
Parent link:Results in Physics
Vol. 16.— 2020.— [102921, 5 p.]
Corporate Author: Национальный исследовательский Томский политехнический университет Инженерная школа неразрушающего контроля и безопасности Отделение электронной инженерии
Other Authors: Rubio C. Constanza, Tarrazo-Serrano D. Daniel, Minin O. V. Oleg Vladilenovich, Uris A. Antonio, Minin I. V. Igor Vladilenovich
Summary:Title screen
In this work, we report the first experimental observation of a new type of near-field curved acoustic beam confirmed by simulations. This new curved acoustical beam is generated by asymmetric distribution of the vortices in a polymer Janus particle (particle with broken symmetry) immersed in water. The origin of the vortices is in the conversion of an incident longitudinal wave mode to a shear wave in a solid and then back to a longitudinal wave in the water and has unique features, the radius of curvature of acoustical hook is less than the wavelength. Indeed, it is the smallest radius of curvature ever recorded for any acoustical beams. These results may be potentially useful when an object, located in the path of the beam, must be avoided. It could also have potential applications in particle manipulations.
Language:English
Published: 2020
Subjects:
электронный ресурс
труды учёных ТПУ
ultrasound focusing
acoustic bending beam
near field focusing
фокусировка
ультразвук
акустическое излучение
Online Access:https://doi.org/10.1016/j.rinp.2019.102921
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=662122

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