Facile synthesis of silicon nitride nanowires with flexible mechanical properties and with diameters controlled by flow rate.

ABSTRACT: Ultralong Si₃N₄ nanowires (NWs) were successfully synthesized with size controlled in N₂ gas by using an efficient method. The diameters of the Si₃N₄ NWs increased when the flow rate of N₂ gas increased, with average diameters of 290 nm from flow rates of 100 ml/min, 343 nm from flow rates of 200 ml/min and 425 nm from flow rates of 400 ml/min. Young's modulus was found to rely strongly on the diameters of the Si₃N₄ NWs, decreasing from approximately 526.0 GPa to 321.9 GPa; as the diameters increased from 360 nm to 960 nm. These findings provide a promising method for tailoring these mechanical properties of the NWs in a controlled manner over a wide range of Young's modulus values. Vapour-liquid-solid

SUBMITTER: Dong S 

PROVIDER: S-EPMC5368666 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature