Picture of athlete cycling

Open Access research with a real impact on health...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by Strathclyde researchers, including by researchers from the Physical Activity for Health Group based within the School of Psychological Sciences & Health. Research here seeks to better understand how and why physical activity improves health, gain a better understanding of the amount, intensity, and type of physical activity needed for health benefits, and evaluate the effect of interventions to promote physical activity.

Explore open research content by Physical Activity for Health...

Directional acoustic response of a silicon disc-based microelectromechanical systems structure

Mackie, David J. and Jackson, Joseph C. and Brown, James G. and Uttamchandani, Deepak G. and Windmill, James F. C. (2014) Directional acoustic response of a silicon disc-based microelectromechanical systems structure. Micro and Nano Letters, 9 (4). pp. 276-279. ISSN 1750-0443

PDF (mackie2014-directional-acoustic-response)
mackie2014.pdf - Final Published Version
License: Creative Commons Attribution 4.0 logo

Download (232kB) | Preview


A microelectromechanical systems (MEMS)-based structure capable of operating mechanically as a directional acoustical sensor is presented. The structure, fabricated through the commercially available SOIMUMPS foundry process, consists of two circular discs attached to a central suspension beam, fixed at both ends. The design of the structure resembles other directional MEMS microphones that mimic the directional hearing organ of the parasitoid fly, Ormia ochracea. Modal analysis and mechanical acoustic directionality analysis using both laser Doppler vibrometry and finite element modelling have been implemented. It is demonstrated that this coupled MEMS structure exhibits an acoustic directional response, with a one-to-one relationship between the relative vibration amplitudes of the two coupled discs and the angle of sound, from −75° to +60°.