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Abstract — We describe the preliminary measurement conducted to establish a baseline dataset toward a cryogen-free system for quantized Hall resistance (QHR) standard application. This paper illustrates the current state-of-the-art cryogenic system, the quantization verification and ratio measurement between an established GaAs Hall bar and a graphene-base quantum Hall array resistance standard (GQHARS). The technology comparison is carried out with a room temperature ratio bridge.
Index Terms — Measurement, measurement standards, measurement techniques, graphene, measurement uncertainty, precision measurements, uncertainty.