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the manuscript. FS and WW (Institute of Atomic and Molecular Sciences, Academia Sinica) prepared the samples, suspended graphene using by micromechanical method, and captured the OM and AFM images. HC, the corresponding author, had made substantial contributions to conception and design, and had been involved in drafting the manuscript and revising Dimethyl sulfoxide it critically for important intellectual content. All authors read and approved the final manuscript.”
“Background Thermoelectric energy conversion has attracted much interest as a possible application for environmentally friendly electric-power generators and highly reliable, accurate temperature-controllable refrigerators used as electronic devices because it is one of the simplest technologies applicable to energy conversion [1–4]. The efficiency of thermoelectricity is governed by a basic property of thermoelectrical material, and the figure of merit of a thermoelectric material is defined by (1) where T is the absolute temperature.