Molybdenum disulphide (MoS2) has been one of the most interesting materials for scientists and engineers
for a long time. While its bulk form has been in use in conventional industries as an intercalation agent and a
dry lubricant for many years, its two-dimensional forms have attracted growing attention in recent years for
applications in nano-electronic applications. Specifically, the single layer form of MoS2 shows significant
potential as a semiconductor analogue of graphene. These exciting applications are spread over many
fields, from flexible and transparent transistor devices, to low-power, high efficiency biological and
chemical sensing applications. This Review Article, for the first time, provides a comprehensive overview
of the synthesis, structural polytypes, properties, and applications of bulk, few layer, and single layer MoS2.