TY - JOUR
T1 - Transient analysis of fresnel zone plates for ultrasound focusing applications
AU - Pérez-López, Sergio
AU - Tarrazó-Serrano, Daniel
AU - Dolmatov, Dimitry O.
AU - Rubio, Constanza
AU - Candelas, Pilar
N1 - Funding Information:
Funding: This work has been supported by Spanish MICINN RTI2018-100792-B-I00 project, Generalitat Valenciana AICO/2020/139 and the Russian Governmental program “Science” project FSWW-2020-0014. The research is carried out within the framework of Tomsk Polytechnic University Competitiveness Enhancement Program grant VIU-MNOL NK 187/2020.
Funding Information:
Acknowledgments: S.P.-L. acknowledges financial support from Universitat Politècnica de València grant program PAID-01-18. D.T.-S. acknowledges financial support from MICINN BES-2016-07713 project.
Publisher Copyright:
© 2020 by the authors. Licensee MDPI, Basel, Switzerland.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/12/1
Y1 - 2020/12/1
N2 - Fresnel Zone Plates are planar lenses that can be used to focus ultrasound beams. This kind of acoustic lenses can play a key role in the resolution of ultrasonic NDT systems. In this type of pulse-echo applications, the pulse duration is an important parameter that specifies the axial resolution, and thus, shorter ultrasound pulses provide higher resolutions. However, acoustic lenses exhibit a transient response that should be considered when setting the pulse duration, as pulses shorter than the transient state duration result in degradation in the response of acoustic lenses in terms of focal intensity, focal displacement, and lateral and axial resolutions. In this work, a thorough analysis of the transient response of Fresnel Zone Plates is discussed, demonstrating that the transient state should be considered in order to achieve optimal focusing performance. Theoretical and numerical results are presented, showing very good agreement.
AB - Fresnel Zone Plates are planar lenses that can be used to focus ultrasound beams. This kind of acoustic lenses can play a key role in the resolution of ultrasonic NDT systems. In this type of pulse-echo applications, the pulse duration is an important parameter that specifies the axial resolution, and thus, shorter ultrasound pulses provide higher resolutions. However, acoustic lenses exhibit a transient response that should be considered when setting the pulse duration, as pulses shorter than the transient state duration result in degradation in the response of acoustic lenses in terms of focal intensity, focal displacement, and lateral and axial resolutions. In this work, a thorough analysis of the transient response of Fresnel Zone Plates is discussed, demonstrating that the transient state should be considered in order to achieve optimal focusing performance. Theoretical and numerical results are presented, showing very good agreement.
KW - Acoustic lens
KW - Fresnel zone plate
KW - Temporal focusing profile
KW - Transient analysis
UR - http://www.scopus.com/inward/record.url?scp=85096912234&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85096912234&partnerID=8YFLogxK
U2 - 10.3390/s20236824
DO - 10.3390/s20236824
M3 - Letter
C2 - 33260339
AN - SCOPUS:85096912234
VL - 20
SP - 1
EP - 9
JO - Sensors
JF - Sensors
SN - 1424-3210
IS - 23
M1 - 6824
ER -