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ASCEND: Breaking new ground in ultrasonic sensor technology through innovative transducer technology

As part of the ASCEND research project at OTH Regensburg, capacitive micromechanical ultrasonic transducers (CMUTs) are being investigated as a forward-looking alternative to established piezoceramics. From modelling and fabrication in the university’s own cleanroom through to functionalisation and application-specific characterisation, the project covers the entire development chain. Particular emphasis is placed on optimising the acoustic radiation pattern using beamforming. In collaboration with industry partners, the aim is to lay the technological foundations for harnessing the advantages of CMUT technology across a wide range of application areas, such as medical technology.

What is the title of your research project?

ASCEND

Who is involved in the project?

The operational project manager is Prof. Dr Rudolf Bierl, whilst Sebastian Peller is the technical project manager

What is your funded project?

The aim is to conduct research into advanced ultrasonic transducers for ultrasonic sensor technology (e.g. in medical technology). To this end, so-called CMUTs (capacitive micromechanical ultrasonic transducers) are manufactured in the university’s own cleanroom and thoroughly characterised in the laboratories of the Sensor Technology Application Centre. Optimising the radiation pattern of such a transducer using acoustic beamforming plays a central role here.

What excites you about the project?

The project covers the entire process, from the initial model through to manufacture, functionalisation and final testing in the application. OTH Regensburg is able to bring together all the necessary expertise for this.

How can findings from the project be applied in practice?

Together with industry partners, we are seeking to establish a long-term alternative to the piezoceramics currently in commercial use for ultrasound generation. In doing so, we also aim to harness the advantages of this technology for various fields of application, thereby offering genuine added value for ultrasonic sensor technology.

 

On our website, you will find an overview of OTH Regensburg’s current funded projects.

CMUT chip on a bonding board, with a 1-euro coin for scale. Photo: OTH Regensburg/Sebastian Peller