tiny drop at the end these fibers were grown with h 2 n 2 ratio of 0 05 pressure of 30 torr and microwave power of 1000 w fig2 shows initial highly oriented growth of silicon nanofibers for short time scale growth initial one hour fig3 shows a web of fibers grown for a longer time five hours due to the long growth initial one hour fig3 shows a web of fibers grown for a longer time five hours due to the long growth duration the grown wires were very long and intermingled the limitation on size is time dependant but not process dependant fig4 shows nanowires with different thicknesses fig5 shows a transmission electron micrograph of silicon nanowires with diameters in single digit nanometer scale these fibers were grown with h 2 n 2 ratio of 0 0075 pressure of 50 torr and 1000 w of microwave power the elemental composition of the fibrous structures was determined using energy dispersive spectroscopy eds germanium fibers can be grown using the above technique by using either germanium substrate or using germane in the vapor phase the gas phase will preferably consist of hydrogen with or without nitrogen to result in the formation of germane a gaseous source of germanium german will be catalytically decomposed on the gallium substrate resulting in accelerated dissolution of germanium into the.