Design and implementation of a jellyfish otolith-inspired MEMS vector hydrophone for low-frequency detection.

ABSTRACT: Detecting low-frequency underwater acoustic signals can be a challenge for marine applications. Inspired by the notably strong response of the auditory organs of pectis jellyfish to ultralow frequencies, a kind of otolith-inspired vector hydrophone (OVH) is developed, enabled by hollow buoyant spheres atop cilia. Full parametric analysis is performed to optimize the cilium structure in order to balance the resonance frequency and sensitivity. After the structural parameters of the OVH are determined, the stress distributions of various vector hydrophones are simulated and analyzed. The shock resistance of the OVH is also investigated. Finally, the OVH is fabricated and calibrated. The receiving sensitivity of the OVH is measured to be as high as -202.1 dB@100 Hz (0 dB@1 V/μPa), and the ave

SUBMITTER: Wang R 

PROVIDER: S-EPMC8433173 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature