Yangjin, Lee Koo, Jahyun Lee, Sol Yoon, Jun-Yeong Kim, Kangwon Jang, Myeongjin Jang, Jeongsu Choe, Jeongheon Li, Bao-Wen Le, Chinh Tam Ullah, Farman Kim, Yong Soo Hwang, Jun Yeon Lee, Won Chul Ruoff, Rodney S. Cheong, Hyeonsik Cheon, Jinwoo Lee, Hoonkyung Kim, Kwanpyo 2024-01-19T18:04:20Z 2024-01-19T18:04:20Z 2021-09-05 2020-02 https://pubs.kist.re.kr/handle/201004/119005 The atomic or molecular assembly on 2D materials through the relatively weak van der Waals interaction is quite different from the conventional heteroepitaxy and may result in unique growth behaviors. Here, it is shown that straight 1D cyanide chains display universal epitaxy on hexagonal 2D materials. A universal oriented assembly of cyanide crystals (AgCN, AuCN, and Cu0.5Au0.5CN) is observed, where the chains are aligned along the three zigzag lattice directions of various 2D hexagonal crystals (graphene, h-BN, WS2, MoS2, WSe2, MoSe2, and MoTe2). The potential energy landscape of the hexagonal lattice induces this preferred alignment of 1D chains along the zigzag lattice directions, regardless of the lattice parameter and surface elements as demonstrated by first-principles calculations and parameterized surface potential calculations. Furthermore, the oriented microwires can serve as crystal orientation markers, and stacking-angle-controlled vertical 2D heterostructures are successfully fabricated by using them as markers. The oriented van der Waals epitaxy can be generalized to any hexagonal 2D crystals and will serve as a unique growth process to form crystals with orientations along the zigzag directions by epitaxy. English Wiley-VCH Verlag Universal Oriented van der Waals Epitaxy of 1D Cyanide Chains on Hexagonal 2D Crystals Article 10.1002/advs.201900757 1 Advanced Science, v.7, no.4 Advanced Science 7 4 Y scie scopus 000503431000001 2-s2.0-85076756944 Chemistry, Multidisciplinary Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science Article SINGLE-CRYSTAL GRAPHENE GROWTH HETEROSTRUCTURES TRANSITION POINTS EDGE 1D cyanide chains 2D hexagonal crystals oriented van der Waals epitaxy vertical heterostructures