Fig. 2: Characterization and performance testing of feather-PVDF biohybrid mechanoreceptor.
From: Avian-inspired embodied perception in biohybrid flapping-wing robotics
a Feather-PVDF biohybrid mechanoreceptor, including a schematic diagram of PVDF’s multilayer structure, the red arrow represents the direction of the rachis. b Microscopic characterization of PVDF multilayer structure, electrode layer, and adhesive surface under an optical microscope. c Microscopic characterization for the adhesive cross-section of feather-PVDF along the blue dashed line perpendicular to the feather rachis in the upper right corner of the figure. d Microscopic characterization for the adhesive cross-section of feather-PVDF along the orange dashed line parallel to the feather rachis in the upper right corner of the figure. e Schematic of the peeling test for feather-PVDF. f Peeling force curves of feather-PVDF (blue), PET-PVDF (red), and carbon fiber-PVDF (yellow) structures as a function of peeling length. Source data are provided as a Source Data file. g Microscopic structure of the bonding interface during the peeling process of feather-PVDF. h Microstructure of the feather surface. i Microstructure of the heterogeneous attachment cross-section between the feather and PVDF. j Normalized voltage curves of feather-PVDF biohybrid mechanoreceptor with the number of vibrations. Source data are provided as a Source Data file.
