Biosensing Detection - Bioinspired Approaches for Human-Centric Technologies - page 95

a
b
c
Dome
Center
Dome
Edge
Posion (m)
Fig. 3.6 (a) Capacitive variation with pressure for dome with different diameters ranging from
500 μ mto800 μ m. (b) FEM model of the dome. (c) Simulated strain profile along the dashed line
in (b) for the different loads on a dome with a diameter of 500 μ m
devices. Devices rolled around fingerlike cylindrical surfaces (Fig. 3.7 ) preserve
identical conductivity and capacitance behavior after many cycles, demonstrating
the wearability of such structures and in perspective their potential for application
to artificial tactile surfaces (Song et al. 2010 ). The flexoelectricity thus becomes a
tool to realize multifunctional systems able to detect touch, shear forces, and
vibrations as humans do in their everyday life through mechanoreceptors.