报告题目：用于生物医学成像的先进超声换能器
报 告 人：戴吉岩教授
报告时间：2024年12月3日（星期二）上午10：00—11：30
报告地点：机械与汽车工程学院19号楼201会议室
主办单位：机械与汽车工程学院
报告人简介：
戴吉岩，香港理工大学应用物理系教授。功能薄膜材料结构研究与器件制备方面的国际知名学者，并在新型材料用于医学影像的高频、宽带超声换能器的研制方面有所建树，获颁多项专利。发表论文300余篇，论文被他引16000多次，并著有专著《Ferroic Materials for Smart Systems-from Fundamentals to Device Application》。主持完成多项香港政府资助的科技公关项目，并主持国家973项目“先进超声探头研制”子课题。曾获得2020年广东省自然科学一等奖。现任全国电介质物理学会和全国微纳技术学会理事。
报告摘要：
Ultrasound imaging is a popular diagnosis tool for clinical and veterinary medicine attributable to its fast acquisition, non-destructive and non-ionizing radiation characteristic as opposed to other diagnostic modalities. To the preclinical study for small-size animals, the current clinical sequential linear ultrasound transducers are insufficient to obtain intricate features of those targets due to the limited spatial resolution, bulky transducer and large aperture. Therefore, it is highly desirable to make ultrasound transducers with higher spatial resolution, higher sensitivity as well as smaller aperture size for acquiring contour and related biological information of small-scaled organs or tissues. In this seminar, physics and material sciences related to fabrication and characterization of high-frequency (20-MHz) phased-array transducers with high axial and lateral imaging resolutions will be introduced. In vivo ultrasound imaging with phased-array transducers is of great importance for both clinical application and biomedical research. Demonstration the potential application of our developed high-frequency phased-array transducer for biomedical research on small animals such as in vivo fisheye and mouse heart images will also be introduced. Furthermore, our very recent works in 2D array transducer design and fabrication as well as ultrahigh frequency (GHz) transducer development will be presented. Recent results in row-column array and transparent transducers for photoacoustic imaging will also be introduced.
