dc.contributor.authorKottapalli, Ajay G. P.
dc.contributor.authorAsadnia, M.
dc.contributor.authorMiao, Jianmin
dc.contributor.authorBarbastathis, George
dc.contributor.authorTriantafyllou, Michael S.
dc.identifier.citationKottapalli, A. G. P., Asadnia, M., Miao, J., Barbastathis, G., & Triantafyllou, M. S. (2012). A flexible liquid crystal polymer MEMS pressure sensor array for fish-like underwater sensing. Smart materials and structures, 21(11), 115030-.en_US
dc.description.abstractIn order to perform underwater surveillance, autonomous underwater vehicles (AUVs) require flexible, light-weight, reliable and robust sensing systems that are capable of flow sensing and detecting underwater objects. Underwater animals like fish perform a similar task using an efficient and ubiquitous sensory system called a lateral-line constituting of an array of pressure-gradient sensors. We demonstrate here the development of arrays of polymer microelectromechanical systems (MEMS) pressure sensors which are flexible and can be readily mounted on curved surfaces of AUV bodies. An array of ten sensors with a footprint of 60 (L) mm × 25 (W) mm × 0.4 (H) mm is fabricated using liquid crystal polymer (LCP) as the sensing membrane material. The flow sensing and object detection capabilities of the array are illustrated with proof-of-concept experiments conducted in a water tunnel. The sensors demonstrate a pressure sensitivity of 14.3 μV Pa−1. A high resolution of 25 mm s−1 is achieved in water flow sensing. The sensors can passively sense underwater objects by transducing the pressure variations generated underwater by the movement of objects. The experimental results demonstrate the array's ability to detect the velocity of underwater objects towed past by with high accuracy, and an average error of only 2.5%.en_US
dc.relation.ispartofseriesSmart materials and structuresen_US
dc.rights© 2012 IOP Publishing Ltd.en_US
dc.subjectDRNTU::Engineering::Mechanical engineering
dc.titleA flexible liquid crystal polymer MEMS pressure sensor array for fish-like underwater sensingen_US
dc.typeJournal Article
dc.contributor.schoolSchool of Mechanical and Aerospace Engineeringen_US

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