Fig. 2: Design, modeling, and optimization of the E-Antenna.
From: A robust and omnidirectional-sensitive electronic antenna for tactile-induced perception
A E-Antenna’s design philosophy: (i) Schematic diagram of the biological antenna with slender flagellum and segmented stiffness distribution; (ii) E-Antenna modeling in cylindrical coordinates, featuring an insect-like slender structure and a uniform cylindrical shape; (iii) Force mode of the E-Antenna on the plane parallel to the force direction. B Strain simulation of antennas with a softer and standard substrate under the same load. C Simulation results of the magnetic field of the full-magnetized antenna and partial-magnetized antenna with the same deflection angle, respectively. D Photographs of E-Antennas with different designs, the left (MF) is a basic homogeneous design with full magnetization and normal substrate, the middle design (MF_SOFT) adopts a softer substrate, and the right design (MP_SOFT) further takes partial magnetization strategy. E The static responses of the three E-Antennas under varied loads indicate that the optimized design exhibits higher sensing sensitivity and a larger sensing range. F The dynamic responses of the three E-Antennas under three-level air flow showcase that the optimized design enhances the sensing signal-to-noise ratio (SNR) by ~200%, enabling robots to discern subtle features and achieve reliable tactile perception.
