Metrology

Proceedings of IEEE International Ultrasonics Symposium 2020 Las Vegas 09/2020

Polymer-based piezoelectric ultrasound transducer arrays on glass demonstrating mid-air applications

Authors:

Christopher Chare, Pieter Gijsenbergh, et. al.

Contents:

• The acoustic field of an ultrasound transducer array was measured using XARION's technology in order to characterize the performance of the array
• With a measured acoustic focal pressure of 300 Pa (144 dB rel. 20µPa) at 256 kHz, 10 mm above the surface, IMEC opens up the possibility of future mid-air haptic feedback applications for large-area thin-film displays

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Proceedings of Transducers 2019 Berlin 

Display Compatible PMUT Array for Mid-Air Haptic Feedback

Authors:

Alexandre Halbach, Pieter Gijsenbergh, et al.

Contents:

• Optical microphone used in development of mid-air haptic feedback sensors integrated into displays
• Sound pressure characterization of 32 x 32 element piezoelectric micromachined ultrasound transducer (PMUT)

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Sensors 07/2019

Intensity Modulated Photothermal Measurements of NO2 with a Compact Fiber-Coupled Fabry–Pérot Interferometer

Authors:

Philipp Breitegger, Benjamin Lang, et al.

Contents:

• Measurement of nitrogen dioxide concentrations in parts per billion
• The optical microphone enables a miniaturized sensing concept, providing outstanding robustness against mechanical vibrations

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Journal of Micromechanics and Microengineering  07/2019

Characterization of polymer-based piezoelectric micromachined ultrasound transducers for short-range gesture recognition applications

Authors:

Pieter Gijsenbergh, Alexandre Halbach, et al.

Contents:

• The Interuniversity Microelectronics Centre investigated the use of polymer-based piezoelectric micromachined ultrasound transducers (PMUT) for short-range gesture recognition applications
• During the course of the project the optical microphone was used to measure the pressure emitted by a single PMUT at various distances

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Elektrotechnik und Informationstechnik 11/2018

Development of an innovative measurement system for audible noise monitoring of overhead lines

Authors:

U. Schichler, W. Troppauer et al.

Contents:

• Audible noise monitoring of overhead lines with XARION's optical microphone
• Operation in proximity of high electric fields without interferences 

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Opto-Electric Engineering 09/2018

Optical fiber acoustic sensors (Chinese)

Authors:

Gao Chunming, Nie Feng, et.al.

Contents:

• Paper is only available in Chinese. Download a spelling dictionary pack if you are having trouble displaying the paper
• Different acoustic sensor technologies were compared
• XARION's sensor technology displayed its strengths with enormous bandwidth and sensitivity

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Nature Photonics 06/2016

Optical microphone hears ultrasound

Authors:

Balthasar Fischer

Contents:

• Working principle of XARION's optical microphone technology
• Advantages over conventional transducers in applications such as process control or non-destructive testing

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