Transducers Science and Technology - Mivado (Maarten Groen)

Piezoceramic Element Design and Fabrication for Ultrasonic Transducer of Gas Meter

Ultrasonic transducers play a significant role in generating and receiving the acoustic waves in ultrasonic flowmeters. Depending on the required accuracy, the ultrasonic transducers can be installed either in one pair or more in an ultrasonic flowmeter. The main part of an ultrasonic transducer is its piezoceramic element. In this work, four piezoceramic elements with different diameter to thi...

University of Groningen Resource utilization in lung cancer diagnostic procedures

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Impact Analysis of Variation in Geometrical Features on Intrinsic Characteristics of Capacitive Micro-machined Ultrasonic Transducers

Capacitive Micro-machined Ultrasonic Transducers (CMUTs) are the ultrasonic devices which produce better features in contrast to piezoelectric transducers. The intrinsic parameter of CMUT varies with the variation in geometrical dimension of the device. The cavity height and the radius of the CMUT with circular membrane is varied in the lumped parallel plate model for its impact on the paramete...

Microvalves for Precise Dosing Proportional Flow Control on a Chip

Precise control of fluid flow becomes increasingly challenging as systems and instruments are scaled down. Smaller dimensions allow smaller flow ranges, but also leave smaller margins for error in performance. Reliable and effective fabrication and assembly procedures are therefore a primary requirement for any microfluidic system, if it is to be successful in real-world applications. This thes...