NOVELTY - Method (M1) for synthesizing a nanostructured material, comprises: (a) providing many precursor materials (114), where each precursor material comprises a tungsten reactant; and (b) flowing a substantially continuous stream of carbon disulfide vapor (104) in a carrier gas (102) over the precursor materials for a reaction time at a temperature of 700-1000 degrees C, where the reaction time is sufficient to permit the tungsten reactant to react with carbon disulfide to form many tungsten disulfide nanostructures.    USE - The method is useful for synthesizing a nanostructured material, which is useful in the nanostructured composite material (all claimed), where the nanostructured composite material is useful in dry lubricants, low friction coating, engine oil additive, bulletproof ware, scanning electron microscope probe tips, hydrogen fuel cell storage or lithium storage battery technology.    ADVANTAGE - The method: can be performed without the use of reducing atmospheres or hazardous and toxic chemicals, when compared to conventional methods; utilizes a simple one-zone furnace tube and requires no special machining or equipment, hence it is cost effective; and provides nanostructured material that exhibits high stability and superior mechanical properties, as compared to conventional nanostructured materials.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for:    (1) a method (M2) for synthesizing the nanostructured material, comprising: the step (a) as above per se; and (b1) flowing, in a plasma system (110), the continuous stream of carbon disulfide vapor in the carrier gas over the precursor materials for the reaction time;    (2) the tungsten disulfide nanostructures formed using the method (M1) or (M2); and    (3) a nanostructured composite material, comprising: a major amount of at least one material including metals, ceramics or polymers; and a minor amount of tungsten disulfide nanostructures.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic illustration of synthesizing tungsten disulfide nanostructures.    Carrier gas (102)    Carbon disulfide vapor (104)    Plasma system (110)    Container (112)    Precursor materials (114)