Dr. Minoru Toda Life Member

IEEE Princeton/Central Jersey Section
Tagline
Design of ultrasonic transducers, spring-mass matching layers, internal matching layer inside or protection metal, PVDF sensors
Biography
Minoru Toda was born in Kyoto Japan, has graduated from electrical engineering of Shizuoka University Japan, and hold PhD electronic physics from Tokyo University Japan. He has 40 years experience working for US companies, which are RCA laboratories, Measurement Specialties and TE Connectivity. in sensor design, ultrasonics, acoustics, were created leading to 52 US patents granted and published more than 50 papers, mostly first inventor or first author. More than 700 programs were written in MATLAB, all of them are based on physical analysis started from basic theories. Major recent experiences are in new designs of ultrasonic transducers for medical and industrial applications which were derived from new concepts of impedance matching of transducers for medical imaging, high power tissue abrasion, liquid level and gas/air measurements, all of which use new concepts of impedance matching
Certifications
PhD from Tokyo University on Electronic physics
Technical Expertise
Simulation and Modeling
Acoustics
Electro-Mechanical
New Product Development
Technical Writing
Electronic Components
New Product Development
Special Skills
Technical Specialties
I have 40 years experience in US companies. My strength is use of MATLAB programs which I developed from my own theoretical equations (as seen in my publications) and experimental confirmations. The field of background is from ultrasonic transducers to microwave to optics. Recent achievements in ultrasonic transducers are, new designs of impedance matching layer using thin polymer-metal films (invented) replacing quarter wavelength layer, internal matching layer (invented) for metal protected transducers, polymer-metal multilayer absorber(invented) replacing powder/binder, electrical impedance matching circuit combined with TR switch. The related materials and devices are PZT, PVDF and LiNbO3 for thickness mode and flexural or bending modes from ultrasonic transducers to sensors. During working for US companies, 53 US patents were granted, and numerous publications are in "Minoru Toda Google Scholar" showing 85 papers as examples.
Additional Specialties
Matlab programs for simulation of design of ultrasonic transducers were build up from basic theories, not borrowing commercial programs. Therefore, the simulation programs for transducers can be modified/combined in any way as needed, i.e. combined multiple transducers, external matching network, transmission line/cables. Therefore any unique structures can be analyzed and also unique ideas were created from the programs. I own numerous measurement equipment, tools and materials. Using these, experimental validation and combination with theories can be done.
Interests
Nondestructive testing
Ultrasonic transducers
Piezoelectricity
Piezoelectric films
Piezoelectric devices
Piezoelectric materials
Ultrasonic transducers
Ultrasonic transducers
Nondestructive testing
Piezoelectricity
Sonar
Ultrasonics, ferroelectrics, and frequency control
Publications
M. Toda, "High field dielectric loss of PVF2 and the electromechanical conversion efficiency ofa PVF2 fan," Ferroelectrics.
M. Toda, "Theory of curved clamped PVDF acoustic transducers," 1999 IEEE Ultrasonics Symposium. Proceedings. International Symposium (Cat. No.99CH37027).
M. Toda, "Phase matched air ultrasonic transducers using corrugated PVDF film with half wavelength depth," 2001 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.01CH37263).
M. Toda, "Cylindrical PVDF film transmitters and receivers for air ultrasound," IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.
Minoru Toda, "Observation of Plasma Density Waves in n-InSb in Transverse Magnetic Fields," Japanese Journal of Applied Physics.
Education
The University of Tokyo
Doctor of Science
Physical Sciences , 1965