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Ultrasound Devices for Biomedical Applications
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Ultrasound Devices for Biomedical Applications

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Physical Sensors".

Deadline for manuscript submissions: 31 August 2024 | Viewed by 1913

Special Issue Editors

Prof. Dr. Benpeng Zhu

E-Mail Website
Guest Editor
School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China
Interests: ultrasound device
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Dawei Wu

E-Mail Website
Guest Editor
State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
Interests: ultrasound device
Prof. Dr. Ziyu Wang

E-Mail Website
Guest Editor
The Institute of Technological Sciences, Wuhan University, Wuhan 430072, China
Interests: ultrasound device

Special Issue Information

Dear Colleagues,

In recent years, all kinds of ultrasound devices have seen rapid and significant developments. With their unique properties, the biomedical application prospects of ultrasound devices are far reaching, including ultrasound imaging, cell manipulation, drug delivery, neuro stimulating, and so on.

This Special Issue aims to publish original research papers studying the latest advances in the development of ultrasound devices, including manufacturing processes and practical applications of such devices, and reviews describing the state-of-the-art technologies in this field. The current state of this exciting research field will be presented, covering a wide range of topics, including, but not limited to:

  • Piezoelectric ultrasound transducer
  • Optoacoustic transducer
  • Surface acoustic wave device
  • Electromagnetic ultrasonic transducer

Prof. Dr. Benpeng Zhu
Prof. Dr. Dawei Wu
Prof. Dr. Ziyu Wang
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sensors is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • ultrasonic sensors
  • ultrasound devices
  • piezoelectric ultrasound transducer
  • optoacoustic transducer
  • surface acoustic wave device
  • electromagnetic ultrasonic transducer

Published Papers (1 paper)

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Research

19 pages, 3212 KiB  
Article
Harmonic-Reduced Bias Circuit for Ultrasound Transducers
by Hojong Choi
Sensors 2023, 23(9), 4438; https://0-doi-org.brum.beds.ac.uk/10.3390/s23094438 - 30 Apr 2023
Viewed by 1514
Abstract
The gain of class-C power amplifiers is generally lower than that of class-A power amplifiers. Thus, higher-amplitude input voltage signals for class-C power amplifiers are required. However, high-amplitude input signals generate unwanted harmonic signals. Therefore, a novel bias circuit was proposed to suppress [...] Read more.
The gain of class-C power amplifiers is generally lower than that of class-A power amplifiers. Thus, higher-amplitude input voltage signals for class-C power amplifiers are required. However, high-amplitude input signals generate unwanted harmonic signals. Therefore, a novel bias circuit was proposed to suppress the harmonic signals generated by class-C power amplifiers, which improves the output voltage amplitudes. To verify the proposed idea, the input harmonic signals when using a harmonic-reduced bias circuit (−61.31 dB, −89.092 dB, −90.53 dB, and −90.32 dB) were measured and were found to be much lower than those when using the voltage divider bias circuit (−57.19 dB, −73.49 dB, −70.97 dB, and −73.61 dB) at 25 MHz, 50 MHz, 75 MHz, and 100 MHz, respectively. To further validate the proposed idea, the pulse-echo measurements were compared using the bias circuits. The peak-to-peak echo amplitude and bandwidth of the piezoelectric transducer, measured when using a harmonic-reduced bias circuit (27.07 mV and 37.19%), were higher than those achieved with a voltage divider circuit (18.55 mV and 22.71%). Therefore, the proposed scheme may be useful for ultrasound instruments with low sensitivity. Full article
(This article belongs to the Special Issue Ultrasound Devices for Biomedical Applications)
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