Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 396-399 |
| Number of pages | 4 |
| Journal | Physics Letters, Section A: General, Atomic and Solid State Physics |
| Volume | 383 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 21 Jan 2019 |
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Keywords
- Apodization
- Cuboid particle
- Diffraction
- Gas-filled lens
- Sound focusing
ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Enhancement of pupil-masked wavelength-scale gas-filled flat acoustic lens based on anomaly apodization effect. / Rubio, Constanza; Tarrazó-Serrano, Daniel; Minin, Oleg V.; Uris, Antonio; Minin, Igor V.
In: Physics Letters, Section A: General, Atomic and Solid State Physics, Vol. 383, No. 5, 21.01.2019, p. 396-399.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Enhancement of pupil-masked wavelength-scale gas-filled flat acoustic lens based on anomaly apodization effect
AU - Rubio, Constanza
AU - Tarrazó-Serrano, Daniel
AU - Minin, Oleg V.
AU - Uris, Antonio
AU - Minin, Igor V.
PY - 2019/1/21
Y1 - 2019/1/21
N2 - 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.
AB - 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.
KW - Apodization
KW - Cuboid particle
KW - Diffraction
KW - Gas-filled lens
KW - Sound focusing
UR - http://www.scopus.com/inward/record.url?scp=85057044566&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85057044566&partnerID=8YFLogxK
U2 - 10.1016/j.physleta.2018.11.014
DO - 10.1016/j.physleta.2018.11.014
M3 - Article
VL - 383
SP - 396
EP - 399
JO - Physics Letters, Section A: General, Atomic and Solid State Physics
JF - Physics Letters, Section A: General, Atomic and Solid State Physics
SN - 0375-9601
IS - 5
ER -