Bio-inspired all-optical artificial neuromast for 2D flow sensing

Berend Wolf, Jonathan Morton, William MacPherson, Sietse van Netten

OnderzoeksoutputAcademicpeer review

44 Citaten (Scopus)
291 Downloads (Pure)


We present the design, fabrication and testing of a novel all-optical 2D flow velocity sensor, inspired by a fish lateral line neuromast. This artificial neuromast consists of optical fibres inscribed with Bragg gratings supporting a fluid force recipient sphere. Its dynamic response is modelled based on the Stokes solution for unsteady flow around a sphere and found to agree with experimental results. Tuneable mechanical resonance is predicted, allowing a deconvolution scheme to accurately retrieve fluid flow speed and direction from sensor readings. The optical artificial neuromast achieves a low frequency threshold flow sensing of 5 mm s(-1) and 5 mu m s(-1) at resonance, with a typical linear dynamic range of 38 dB at 100 Hz sampling. Furthermore, the optical artificial neuromast is shown to determine flow direction within a few degrees.

Originele taal-2English
Aantal pagina's10
TijdschriftBioinspiration & biomimetics
Nummer van het tijdschrift2
StatusPublished - mrt.-2018

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