- Contains A Mixture Of Chemical Species From Which The Nanowire Is To Be Formed The Catalytic Liquid Slowly Absorbs The 1 (137.03 KiB) Viewed 29 times
contains a mixture of chemical species from which the nanowire is to be formed. The catalytic liquid slowly absorbs the species from the gas through its top surface and converts these to a solid material that is deposited onto the underlying liquid-solid interface, resulting in construction of the nanowire. The liquid catalyst remains suspended at the tip of the nanowire. Gas absorption ******Y Solid deposition Liquid catalyst Initial time Intermediate time h, T. Nanowire Maximum length Consider the growth of a 18-nm-diameter silicon carbide nanowire onto a silicon carbide surface. The surface is maintained at a temperature of T, = 2400 K, and the particular liquid catalyst that is used must be maintained in the range 2400 K≤ T ≤ 3000 K to perform its function. Determine the maximum length, in nm, of a nanowire that may be grown for conditions characterized by h = 105 W/m².K and T = 8000 K. Assume properties of the nanowire are the same as for bulk silicon carbide.