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dc.contributor.authorKottapalli, Ajay Giri Prakashen
dc.contributor.authorBora, Meghalien
dc.contributor.authorKanhere, Elgaren
dc.contributor.authorAsadnia, Mohsenen
dc.contributor.authorMiao, Jianminen
dc.contributor.authorTriantafyllou, Michael S.en
dc.identifier.citationKottapalli, A. G. P., Bora, M., Kanhere, E., Asadnia, M., Miao, J., & Triantafyllou, M. S. (2017). Cupula-Inspired Hyaluronic Acid-Based Hydrogel Encapsulation to Form Biomimetic MEMS Flow Sensors. Sensors, 17(8), 1728-.en
dc.description.abstractBlind cavefishes are known to detect objects through hydrodynamic vision enabled by arrays of biological flow sensors called neuromasts. This work demonstrates the development of a MEMS artificial neuromast sensor that features a 3D polymer hair cell that extends into the ambient flow. The hair cell is monolithically fabricated at the center of a 2 μm thick silicon membrane that is photo-patterned with a full-bridge bias circuit. Ambient flow variations exert a drag force on the hair cell, which causes a displacement of the sensing membrane. This in turn leads to the resistance imbalance in the bridge circuit generating a voltage output. Inspired by the biological neuromast, a biomimetic synthetic hydrogel cupula is incorporated on the hair cell. The morphology, swelling behavior, porosity and mechanical properties of the hyaluronic acid hydrogel are characterized through rheology and nanoindentation techniques. The sensitivity enhancement in the sensor output due to the material and mechanical contributions of the micro-porous hydrogel cupula is investigated through experiments.en
dc.description.sponsorshipNRF (Natl Research Foundation, S’pore)en
dc.format.extent14 p.en
dc.rights© 2017 by The Author(s). Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (
dc.subjectBiomimetic Sensorsen
dc.titleCupula-Inspired Hyaluronic Acid-Based Hydrogel Encapsulation to Form Biomimetic MEMS Flow Sensorsen
dc.typeJournal Articleen
dc.contributor.schoolSchool of Mechanical and Aerospace Engineeringen
dc.contributor.researchSingapore-MIT Alliance Programmeen
dc.description.versionPublished versionen
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