Yisonic is a technology company specializing in the independent development of AlN-based PMUT (Piezoelectric Micromachined Ultrasonic Transducer) chips. Leveraging its core ultrasonic innovation, Yisonic provides comprehensive sensing and measurement solutions across five key domains — Angle, Identification, Distance, Velocity, and Density.
Through advanced ultrasonic technology, Yisonic delivers high-precision, non-contact sensing systems designed for applications ranging from industrial automation and robotics to automotive and smart devices. With full vertical integration from chip design to system solutions, Yisonic empowers clients with enhanced reliability, miniaturization, and environmental adaptability in next-generation sensing technologies.
Leadership：
Eason Y. H. Chiu, Ph.D.
Founder & CEO, Yisonic
Dr. Eason Y. H. Chiu received his Ph.D. degree from the School of Integrated Circuits, Peking University, majoring in Microelectronics and Solid-State Electronics.
His doctoral research, “Research on Key Technology of AlN PMUT-based Time-of-Flight Microsystem for Air Ranging,” focused on ultrasonic MEMS technologies and precision air-ranging systems.
Dr. Chiu has published 8 journal and conference papers, including:
Feb. 2022 — “An AlN-based Piezoelectric Micromachined Ultrasonic Transducer with a Double-Beam Suspended Structure,” JCIE.
Mar. 2021 — “A Novel Ultrasonic TOF Ranging System Using AlN-based PMUTs,” Micromachines.
May 2019 — “Study of Properties of AlN PMUT Used as a Wireless Power Receiver,” 69th IEEE-ECTC, Las Vegas, USA.
He holds over 29 invention patents related to ultrasonic MEMS design, sensing systems, and microscale actuation technologies.
In recognition of his research excellence, he received the 2019 Peking University Taiwan Student Scholarship Doctoral Grand Award.
Dr. Chiu also earned his Master’s degree from the Department of Electrical Engineering and Computer Science, National Tsing Hua University, where his thesis “CMOS-MEMS Low Power Pressure Sensing System-on-a-Chip (SSoC)” demonstrated his expertise in low-power integrated MEMS sensor systems.
Applications：
Yisonic：The Sound of Precision — AIDVD
Ultrasonic Intelligence for Angle, Identification, Distance, Velocity, and Density.
| Parameter | Meaning | Ultrasonic Advantage | Typical Applications |
|---|---|---|---|
| A-Angle | Measures angular displacement or rotation | True non-contact sensing, immune to magnetic or thermal interference | Servo motors, robotic joints, precision actuators |
| I-Identification | Recognizes materials or objects by acoustic signature | Enables intelligent sensing and classification | Industrial inspection, smart robotics, material sorting |
| D-Distance | Detects range and position via time-of-flight or phase shift | High-resolution ranging, unaffected by light or magnetic fields | Automation systems, drones, obstacle detection |
| V-Velocity | Measures motion or flow using Doppler effect | Real-time, accurate motion tracking without optical limits | Fluid monitoring, motor feedback, autonomous navigation |
| D-Density | Determines material or fluid density through sound-speed correlation | Direct measurement without contact or sampling | Process control, liquid analysis, industrial sensing |