Seminar: Electro-Optics and Microelectronics Seminar
Silicon-Photonics Ultrasound Detection for Sensing and Imaging
Date:
November,02,2026
Start Time:
13:30 - 14:30
Location:
1061, Meyer Building
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Lecturer:
Tamar Harary
Research Areas:
| Optoacoustic microscopy combines optical excitation with acoustic detection to provide high-resolution, label-free imaging of biological tissue. In many existing systems, however, the acoustic detector imposes significant constraints on the optical geometry, field of view, and scanning configuration. In this work, silicon-photonics acoustic detectors (SPADEs) are used as miniature, broadband ultrasound sensors that enable new optoacoustic system architectures. The research follows the development of the detector platform together with three complementary imaging and sensing configurations. First, a reflection-mode optoacoustic micro-tomography system was developed using localized illumination co-scanned with a miniature SPADE. Second, a wide-field optical-resolution optoacoustic microscopy system was demonstrated in which only the optical focus was scanned while the acoustic detector remained stationary. Finally, a transparent silicon-nitride SPADE was developed, allowing optical excitation through the detector itself and enabling the detection of transient signals associated with red blood cells flowing in superficial human capillaries. Together, these studies demonstrate a route toward compact optoacoustic systems that combine high-resolution sensing with greater freedom in optical access and measurement geometry, features that are particularly relevant for future clinical applications. |
| Tamar Harary is a Ph.D. candidate in Electrical Engineering at the Technion – Israel Institute of Technology, under the supervision of Prof. Amir Rosenthal. Her research focuses on optoacoustic imaging, with an emphasis on optical-resolution optoacoustic microscopy and highly sensitive optical ultrasound detection. Her doctoral work includes the development of advanced imaging systems and photonic detection technologies for high-resolution biomedical imaging.
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