One problem related to the actuation principle of macroscopic dielectric elastomer actuators is the high voltage required,
typically in the Kilovolt range, that imposes particular care in the insulation of the whole actuator from the surrounding
environment. This high actuation voltage, however, can be drastically reduced if a thin film of dielectric elastomer is
used. Despite this, the manufacture of a macroscopic stack-like actuator, starting from thin films of dielectric elastomer
can present many manufacture difficulties, like the handling and the assembly of the films, the power distribution to
hundreds or thousands of layers, the presence of defects in one single layer that can cause the complete failure of the
whole actuator. In this paper, a fast, semi-automatic process is proposed for the manufacture of modular units of
dielectric elastomer, each of them consisting of many layers of rolled thin dielectric film. All the manufactured units are
independent and take their power from a lateral, compliant supply rail that contacts the sides the electroded layers. This
design is very suitable for industrial production: each module can be independently tested and then assembled in a
complete macroscopic actuator composed by an unlimited number of these modules. The simple assembly methodology
and the semi-automatic manufacture process described in this paper allows the fabrication of multilayer stacked devices,
that can be used both as contractile or expanding actuators.
Conference Committee Involvement (1)
Device and Process Technologies for Microelectronics, MEMS, Photonics, and Nanotechnology IV
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