CVD Grown MoS 2 Nanoribbons on MoS 2 Covered Sapphire(0001) Without Catalysts

D.W. and J.S. contributed equally to this work. The authors acknowledge the financial support from the National Natural Science Foundation (NSF) of China (Grant Nos. 11874427, 51272291, 51173205, 61474077, 51702368). Dr. Han Huang and Xiaoming Yuan acknowledges support from the Innovation-Driven project of Central South University (Grant Nos. 2017CX018, 2018CX045) and from the Natural Science Foundation of Hunan province (Grant Nos. 2016JJ1021, 2018JJ3684). Di Wu, Jiao Shi, and Xiaoming Zheng acknowledge the support from the Fundamental Research Funds for the Central Universities of Central South University (Grant Nos. 2018zzts107, 2017zzts330, 2017zzts066). The Australian Microscopy and Microanalysis Research Facility are acknowledged for access to facilities used in this work.