We show that graphene-percolated polymer composites exhibit fractional capacitance response in the frequency range of 50 kHz–2 MHz. In addition, it is shown that by varying the loading of graphene within the matrix from 2.5% to 12%, the phase can be controllably tuned from −67° to −31°, respectively. The electrostatic fractional capacitors proposed herein are easy to fabricate and offer integration capability on electronic printed circuit boards.

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Abstract-This paper demonstrates RF MEMS fractal capacitors possessing the highest reported self resonant frequencies (SRF) in PolyMUMPS to date. Explicitly, measurement results show SRFs beyond 20GHz. Further, quality factors higher than 4 throughout a band of 1GHz to 15GHz and reaching as high as 28 were achieved. Additional benefits that are readily attainable from implementing fractal capacitors in MEMS are discussed including suppressing residual stress warping, eliminating the need for etching holes, and reducing parasitics. The latter benefits were acquired without any fabrication intervention.

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