This product contains MoS2 flakes solution in ethanol. The MoS2 solution has been developed by ultrasonic treatment of bulk MoS2 high quality crystals synthesized through vapor transport (CVT) technique. Since the starting material (CVT grown MoS2 crystals) is highly crystalline, ultrasonic treatment to delaminate MoS2 layers yields highly crystalline MoS2 mono-, few-, and some thick layers suspended in ethanol solution. The solution predominantly contains monolayer flakes, however other thickness might be observed as well. The crystallinity of MoS2 nanomaterials has been confirmed through electron energy dispersive spectroscopy (EDAX), Raman spectroscopy (FWHM<5cm-1), and scanning electron microscopy (SEM) measurements. Depending on the thickness of the layers, flakes deposited on different substrates produce light emission (photoluminescence). Lateral sizes of MoS2 flakes deposited onto different substrates range from ~10nm - ~10 um while thickness range from 1L to 10s of layers.