Fig. 8

a The structure difference between 1 T, 2H and 3R [163]. Adapted with permission from ref [163]. Copyright 2016 for John Wiley and Sons. b Top and side views for 2H (left) and 1 T (Right) phase of MoS₂ single layer [106]. Adapted with permission from ref [106], under a Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by/4.0/)