Enhancement of pupil-masked wavelength-scale gas-filled flat acoustic lens based on anomaly apodization effect; Physics Letters A; Vol. 383, iss. 5

Enhancement of pupil-masked wavelength-scale gas-filled flat acoustic lens based on anomaly apodization effect; Physics Letters A; Vol. 383, iss. 5

Dades bibliogràfiques
Parent link:	Physics Letters A Vol. 383, iss. 5.— 2019.— [P. 396-399]
Autor corporatiu:	Национальный исследовательский Томский политехнический университет Инженерная школа неразрушающего контроля и безопасности Отделение электронной инженерии
Altres autors:	Rubio C. Constanza, Tarrazo-Serrano D. Daniel, Minin O. V. Oleg Vladilenovich, Uris A. Antonio, Minin I. V. Igor Vladilenovich
Sumari:	Title screen In this letter, the improvement in focus by the use of a pupil mask produced in an acoustic mesoscale cuboid particle filled with CO2 is reported. Thereby, the result shows that the pupil mask increases the sound intensity and also increases the resolution (or a reduction of the full width at half maximum, FWHM) in focus compared to the non-masked one. These results are important because they confirm the effect of abnormal amplitude apodization for a one-wavelength dimension acoustic lens and demonstrate that it is possible to improve sound focusing of a cuboid gas-filled lens with one wavelength dimension. This is the smallest size of an acoustic lens ever considered in this type of literature, with side dimensions of the cube equal to one wavelength and a diameter to focus ratio of 2.5, the sound amplification in focus is 5.4 dB at 4125 Hz, with the resolution near to the diffraction limit. Режим доступа: по договору с организацией-держателем ресурса
Idioma:	anglès
Publicat:	2019
Matèries:	электронный ресурс труды учёных ТПУ sound focusing gas-filled lens cuboid particle apodization diffraction
Accés en línia:	https://doi.org/10.1016/j.physleta.2018.11.014
Format:	Electrònic Capítol de llibre
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664373

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