Nanorods of Sb 2 S 3 have been synthesized by a surfactant assisted hydrothermal method. The formation of nanorods through flowerlike morphology with an intermediate straw tide like structure has been depicted by scanning electron microscopy (SEM) study. This type of observation is the first of its kind for this material, and it has been explained on the basis of a two step heterogeneous nucleation-growth mechanism followed by crystal splitting. Raman spectroscopy of the nanorods has been carried out to provide an idea about their purity. An increase in the band gap is observed for Sb 2 S 3 with nanorod-type morphology. Photoluminescence (PL) shows no sign of quantum confinement effect, though a large increase in intensity for nanorods has been observed compared to the flowerlike morphology.

Graphene was prepared in hydrocarbon oil medium in a mechano-chemical process.The resulting dispersion is a mixture of multilayered and single layer graphene as revealed from High Resolution Transmission Electron Microscope (HRTEM) and Selected Area Electron Diffraction (SAED) studies. The dispersion yielded significant increase in thermal conductivity with respect to base oil. The inclusion of the graphene dispersion in grease instead of traditionally used graphite improved the thermal conductivity value considerably, without deteriorating the tribological properties achieved from the pristine graphite system. A fully formulated lubricant inhibited with the said graphene dispersion showed excellent thermal dissipation and reduction in coefficient of friction over the neat lubricant. Spectroanalytical studies of the used test specimen of tribological rig bear signature peak of graphene film, thus proving the lubrication efficiency of graphene in hydrocarbon medium. …………………………………………………………………………………………………..

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