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Tungsten disulfide with the molecular formula of WS2 is a super lubricant (zero friction) and a crystalline structure. Tungsten sulfide exhibits excellent tribological properties meaning it is wear-resistant, lubricant and has no friction. The tribological property of WS2 originates from its axial ratio with the numerical of at least 1.87 in order to adopt a low friction coefficient. Tungsten sulfide has six nonbonding electrons that for a positive charge network on its surface layer a …