Feasibility study for development of a carbon-based MEMS/NEMS using HOPG and a MEMS fabrication process

We aim to develop a process technology for constructing a carbon MEMS/NEMS device using HOPG without a high-temperature and high-energy process. An HOPG micro-sheet was prepared by exfoliation. In addition, the cantilevers and double-clamped beams were patterned using a photoresist. The HOPG micro-sheet was adhered using a tantalum layer. We succeeded in the fabrication of cantilevers and double-clamped beams by controlling the thickness and surface roughness of the HOPG micro-sheet. The measured first resonance frequency of the constructed cantilever was near graphite property. We plan to develop more precise nano-scale devices in the future.