Engineering biomimetic hair bundle sensors for underwater sensing applications

Engineering biomimetic hair bundle sensors for underwater sensing applications

We present the fabrication of an artificial MEMS hair bundle sensor designed to approximate the structural and functional principles of the flow-sensing bundles found in fish neuromast hair cells. The sensor consists of micro-pillars of graded height connected with piezoelectric nanofiber “tip-links...

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Bibliographic Details
Main Authors: Kottapalli, Ajay Giri Prakash, Asadnia, Mohsen, Karavitaki, K. Domenica, Warkiani, Majid Ebrahimi, Miao, Jianmin, Corey, David P., Triantafyllou, Michael
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2018
Subjects:
DRNTU::Engineering::Mechanical engineering
Fluid Drag
Auditory System
Online Access:https://hdl.handle.net/10356/88709
http://hdl.handle.net/10220/45893
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Institution: Nanyang Technological University
Language: English
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Summary:We present the fabrication of an artificial MEMS hair bundle sensor designed to approximate the structural and functional principles of the flow-sensing bundles found in fish neuromast hair cells. The sensor consists of micro-pillars of graded height connected with piezoelectric nanofiber “tip-links” and encapsulated by a hydrogel cupula-like structure. Fluid drag force actuates the hydrogel cupula and deflects the micro-pillar bundle, stretching the nanofibers and generating electric charges. These biomimetic sensors achieve an ultrahigh sensitivity of 0.286 mV/(mm/s) and an extremely low threshold detection limit of 8.24 µm/s. A complete version of this paper has been published [1].

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