A joint research group led by Professor Tomoki Machida has discovered that a one-dimensional moiré superlattice structure with stripes in one direction can be formed when two atomic layers in sheet form are superimposed by shifting their orientation to a specific angle. When two atomic layers of Tungsten Ditelluride (WTe2) are superimposed with a twist angle for each crystalline orientation, it was discovered that the change in alignment pattern becomes one-dimensional at a specific twist angle. One-dimensional materials such as carbon nanotubes exhibit phenomena peculiar to low dimensions, but it has been difficult to create large-area structures while preserving these characteristics. It is expected to serve as a new platform for novel, highly anisotropic materials research and device applications. This research was conducted in collaboration with research groups at the Japan Advanced Institute of Science and Technology and Osaka University. The resulting paper was published in ACS Nano on 27 March.
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