Bulk layered inorganic compounds of 2D nanostructures has added significant momentum in the research field of energy conversion and storage. Moreover, a great emphasis on the study of inorganic nanotubes from 2D materials apparently surpass the performance in the pursuit of their use in energy storage and conversion. The fundamental studies of light matter interactions i.e., optical properties and the electrical properties are thus important for the development and understanding of new materials. In this presentation, we will discuss on the control of strong coupling in nano dimension in the context of transition metal dichalcogenides (TMDCs). When the TMDC layers are treated to fold in space, these materials form either 1Dnanotubes or 0D-fullerenes. These low dimensional materials can trap light inside and generate optical cavity modes. The intrinsic excitons in TMDC materials strongly interact with these cavity modes and generated polaritons. The ultrafast transient absorption analysis permitted following the excited state dynamics and elucidating the mechanism of the strong coupling to the polariton. The nanotubes of TMDC materials offer strong band gap tunability, which would be useful for multispectral vision devices and other optoelectronic applications.

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