Acoustic Hole-Hologram for Ultrasonic Focusing With High Sensitivity

Li, Zhaoxi; Wang, Danfeng; Fei, Chunlong; Jiang, Pingying; Zhang, Shuxiao; Chen, Dongdong; Li, Di; Zhen, Chenxi; Wu, Ruizhi; Xiao, Peng; Xu, Yang; Chen, Zeyu; Feng, Wei; Yang, Yanchao

doi:10.1109/jsen.2021.3052508

Cited by 6 publications

(2 citation statements)

References 34 publications

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“…Compared to ball-press transducers, array transducers, and acoustic lenses, acoustic holograms have the advantages of flexible acoustic field control capabilities, higher spatial resolution, and lower costs. To generate a specific acoustic field for AH-VIEW and maintain the coaxial propagation of light and ultrasound, we used the iterative angular spectrum approach to design a centrally apertured acoustic hologram, also known as the hole hologram ( 23 ). In the schematic of the hole-hologram design shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Acoustic hologram–induced virtual in vivo enhanced waveguide (AH-VIEW)

Lin,

Li,

Wang

et al. 2024

Sci. Adv.

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Optical imaging and phototherapy in deep tissues face notable challenges due to light scattering. We use encoded acoustic holograms to generate three-dimensional acoustic fields within the target medium, enabling instantaneous and robust modulation of the volumetric refractive index, thereby noninvasively controlling the trajectory of light. Through this approach, we achieved a remarkable 24.3% increase in tissue heating rate in vitro photothermal effect tests on porcine skin. In vivo photoacoustic imaging of mouse brain vasculature exhibits an improved signal-to-noise ratio through the intact scalp and skull. These findings demonstrate that our strategy can effectively suppress light scattering in complex biological tissues by inducing low-angle scattering, achieving an effective depth reaching the millimeter scale. The versatility of this strategy extends its potential applications to neuroscience, lithography, and additive manufacturing.

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Section: Resultsmentioning

confidence: 99%

Acoustic hologram–induced virtual in vivo enhanced waveguide (AH-VIEW)

Lin,

Li,

Wang

et al. 2024

Sci. Adv.

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“…The novel acoustic hole‐hologram, ensures optimal acoustic beam focusing while providing the transducer with high sensitivity. [ 172 ] Coded piezoelectric metasurfaces, [ 173 ] with their dual function of sound wave generation and modulation, showcase their potential as innovative disruptors in the field of high‐frequency acoustic field control.…”

Section: Piezoelectric Materials and Ultrasound Transducersmentioning

confidence: 99%

An Emerging Era: Conformable Ultrasound Electronics

Zhang,

Du,

Kim

et al. 2023

Advanced Materials

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Conformable electronics are regarded as the next generation of personal healthcare monitoring and remote diagnosis devices. In recent years, piezoelectric based conformable ultrasound electronics (cUSE) have been intensively studied due to their unique capabilities, including no‐radiative monitoring, soft tissue imaging, deep signal decoding, wireless power transfer, portability, and compatibility. This review provides a comprehensive understanding of cUSE for use in biomedical and healthcare monitoring systems and a summary of their recent advancements. Following an introduction to the fundamentals of piezoelectrics and ultrasound transducers, the critical parameters for transducer design are discussed. Next, five types of cUSE with their advantages and limitations are highlighted, and the fabrication of cUSE using advanced technologies is discussed. In addition, the working function, acoustic performance, and accomplishments in various applications are thoroughly summarized. We note that application considerations must be given to the tradeoffs between material selection, manufacturing processes, acoustic performance, mechanical integrity, and the entire integrated system. Finally, we highlight current challenges and directions for the development of cUSE, and provide research flow as the roadmap for future research. In conclusion, these advances in the fields of piezoelectric materials, ultrasound transducers, and conformable electronics spark an emerging era of biomedicine and personal healthcare.This article is protected by copyright. All rights reserved

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Composite ultrasound transducer for multi-size of tweezer manipulation

Hou

Fei

et al. 2022

Applied Acoustics

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Acoustic Hole-Hologram for Ultrasonic Focusing With High Sensitivity

Cited by 6 publications

References 34 publications

Acoustic hologram–induced virtual in vivo enhanced waveguide (AH-VIEW)

Acoustic hologram–induced virtual in vivo enhanced waveguide (AH-VIEW)

An Emerging Era: Conformable Ultrasound Electronics

Composite ultrasound transducer for multi-size of tweezer manipulation

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