Three-dimensional reconstruction of nonplanar ultrasound fields using Radon transform and the schlieren imaging method

Xu, Zheng; Chen, Hao; Xu, Yang; Mei, Qian; Cheng, Qian

doi:10.1121/1.4994282

Cited by 22 publications

(7 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1(b). Detailed information about the Schlieren imaging method [22][23][24] can be found in the supplementary material (Part I) available online at stacks.iop.org/APEX/13/064003/mmedia. A long burst of 409 kHz ultrasonic waves is emitted from the transducer, and the ultrasonic waves propagate from the upper side of the structure.…”

mentioning

confidence: 99%

Acoustic hook beam lens for particle trapping

Ren

Zhou

et al. 2020

Appl. Phys. Express

Self Cite

View full text Add to dashboard Cite

We report the generation of acoustic hook beams by a holographic lens. Compared with the conventional method, the intensity of the hook beam is greatly improved and the bending position is adjustable. We further rotate the hook beam into a two-dimensional axisymmetric structure with a cavity in the middle, forming a self-healing bottle beam. As an experiment, the generated bottle beam is used to trap and manipulate a polystyrene particle in the center of the bottle in water. The self-healing property of the bottle beam may have potential applications in biomedical application to manipulate cells or tissues behind obstacles.

show abstract

mentioning

confidence: 99%

Acoustic hook beam lens for particle trapping

Ren

Zhou

et al. 2020

Appl. Phys. Express

Self Cite

View full text Add to dashboard Cite

show abstract

“…The Schlieren imaging method [29][30][31][32][33][34] was used to visualize the acoustic field. The schematic diagram of the experimental setup for Schlieren imaging is shown in figure 4(a), and the photograph of this system is shown in figure 4(b).…”

Section: Methodsmentioning

confidence: 99%

High efficiency acoustic Fresnel lens

Zhou

Liu

2019

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

We present a water-immersed ultrasound high-efficiency Fresnel lens based on the theory of extraordinary acoustic transmission of plate-wave resonance. We studied, experimentally and numerically, the acoustic pressure gain of the Fresnel lens with and without gratings on the back. We found that the transmission coefficient of the incident acoustic waves through the lens with gratings on the back was much higher than that of the lens without gratings, thus increasing the acoustic pressure gain at the focal point of an impedance-mismatched Fresnel lens by 14.1 dB. We then optimized the grating width in the structure, thereby increasing the acoustic pressure gain by 16.3 dB. This lens has potential applications in acoustic imaging and medical diagnosis.

show abstract

“…At the same time, researchers employed schlieren techniques, which are commonly used in gas dynamics measurements, to visualize and quantitatively measure acoustic fields. Schlieren continues to prove useful in acoustic studies, as is evident from [16]- [21].…”

Section: Prior Workmentioning

confidence: 97%

“…We utilize tomography in this work, assuming that the field of interest is axisymmetric. Tomography has also been used in some of the schlieren studies mentioned above to reconstruct the acoustic field [20], [21].…”

Section: Prior Workmentioning

confidence: 99%

Determination of Radiation Pressure in Acoustic Levitation by Optical Acoustic-Field Measurement

Scire

2019

IEEE Access

View full text Add to dashboard Cite

Pulsed digital holography was used to determine the acoustic radiation force on objects suspended in a single-axis acoustic levitator. Digital holography provided both the object images and the optical phase data required to determine the instantaneous acoustic pressure. The phase data were utilized in tomography calculations, converting the measured line-of-sight variations to a pressure field by assuming that the system was axisymmetric. The pressure field was used to calculate the velocity field and these together were used to calculate the acoustic radiation pressure. This pressure was integrated over the surface of the object to determine the vertical force on the object. Force measurements were completed for five different polymer spheres, of different sizes and densities, and for an evaporating water droplet. For all but the heaviest sphere, the optically measured force agreed with the measured weight of the sphere within experimental uncertainty. For the heaviest sphere, the overall average showed an upward bias but was still only 4.7% high. For the water data, the optically measured force was consistent with the droplet volume as the droplet evaporated.INDEX TERMS Acoustic measurements, holography, levitation, nonlinear acoustics.

show abstract

Three-dimensional reconstruction of nonplanar ultrasound fields using Radon transform and the schlieren imaging method

Cited by 22 publications

References 18 publications

Acoustic hook beam lens for particle trapping

Acoustic hook beam lens for particle trapping

High efficiency acoustic Fresnel lens

Determination of Radiation Pressure in Acoustic Levitation by Optical Acoustic-Field Measurement

Contact Info

Product

Resources

About