Abstract

Low-dimensional (one-dimensional, 1D, and two-dimensional, 2D) materials such as carbon nanotubes (CNTs), graphene, boron nitride (hBN), and transition metal dichalcogenides (TMDs, Fig. 1) have provided a fascinating platform for exploring new physics and chemistry at the nanoscale. In addition to the attractive properties of low-dimensional materials, they also allow the exploration of new superstructures, such as heterojunctions, heterostacks, and superlattices, providing even broader possibilities. We have been studying the fabrication of low-dimensional superstructures by (1) crystal growth by metalorganic chemical vapor deposition (MOCVD) and molecular beam epitaxy (MBE) and (2) stacking of each component by the dry transfer method[1]-[5]. These techniques yield a variety of low-dimensional nanostructures as designed.

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