Fig. 4: Water flow mechanical stimulation response of the BOFN.
From: From fish to fiber: 3D-nanoprinted optical neuromast for multi-integrated underwater detection
a Variation in the reflection spectra of the BOFN. b Relationship between dip wavelength and flow velocity. The error bars denote the different wavelength shifts obtained at the same velocities. c Comparison of the proposed BOFN and existing flow velocity sensors regarding sensitivity and resolution. d The BOFN’s response to a falling leaf, metal, and stone. e The BOFN’s response to percussion stimulation at varying frequencies. f The BOFN’s response to stimulation from a steel ball falling from different heights. g Application scenarios of underwater Morse code communication. h Transmitting Morse code for the word “HUST”.
