OICC Press International Nano Letters 2228-5326 11 3 (September 2021) 2021 04 20 Edge, confinement effects, and measurement of the number of layers of MoS2 nanosheets by liquid-exfoliated method assisted by different solvents 10.1007/s40089-021-00337-x EN Nahid Chaudhary Centre for Nanoscience and Nanotechnology, Jamia Millia Islamia, New Delhi, IN Shikha Bansal Centre for Nanoscience and Nanotechnology, Jamia Millia Islamia, New Delhi, IN Manika Khanuja Centre for Nanoscience and Nanotechnology, Jamia Millia Islamia, New Delhi, IN Journal Article 2021 04 20 Abstract A liquid exfoliation method is an indispensable productive approach, inhibited by our breakdown to measure nanosheet concentration, estimation, and thickness. The light scattered by MoS 2 nanosheets in liquid solvents, viz., dimethyl sulfoxide (DMSO), N -methyl-2-pyrrolidone, and ethanol results in optical extinction spectra which determines the optoelectronic properties. All samples were characterized by X-ray diffraction, scanning electron microscopy, and UV–Vis spectroscopy for determining their structure, morphology, and optical properties, respectively. The minimum estimated number of layers was found to be 15 in DMSO as solvent. The liquid-phase method can be employed to a wide range of 2D material including MoSe 2 , WS 2 , and WSe 2 .