Soft dielectric elastomers usually suffer from low electrical breakdown strength or electromechanical instability [1,2]. However, to realize very large actuation strains high voltages are usually required if the film thickness is within the micrometer scale. From the high voltage cable industry voltage stabilization of the utilized materials is very common, and excellent results are achieved e.g. from thermoplastic polyethylene (PE) for which the electrical breakdown strength has been improved by more than 50% by addition of minute amounts of so-called aromatic voltage stabilizers . For silicone elastomers various studies have shown that voltage stabilization is indeed possible  but not to a comparable extent to that of the PE material. PE is a thermoplastic material and therefore the electrical breakdown may be very different for that of silicone elastomers. In order to voltage stabilize silicone elastomers various studies are conducted to identify the breakdown patterns which may have different origins, such as thermal or electronic . Finally, various approaches to voltage stabilize dielectric elastomers are discussed.
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