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The composite of epoxy resin and microvaristors shows the non-linear voltage-current characteristics because it has the chains of microvaristors which are formed by applying an electric field and work as current paths. These chains should be formed homogeneously to obtain the stable characteristics and their formation is strongly influenced by gravity. This paper reports the experimental results on the influence of diameter of microvaristors on the electric field to form and sustain the chains under the influence of gravity.

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