FABRICATION OF INDIUM OXIDE NANOWIRES BY THERMAL EVAPORATION WITHOUT ANY CATALYST, IN HORIZONTAL TUBULAR FURNACE SUCCESSFULLY HAS BEEN PERFORMED. THE GROWN NANOWIRES ARE 75NM-150NM IN DIAMETER AND SEVERAL MICRONS IN LENGTH. GROWTH MECHANISM OF THESE NANOWIRES WAS DISCUSSED BY MADE ANALYSIS AND IT WAS FOUND OUT THAT VS MECHANISM CAUSES LATERAL GROWTH OF NANOWIRES. FOR PREVAILING OF INDIUM OXIDE HIGH EVAPORATION TEMPERATURE AND NEED TO HIGH DEGREE FURNACES, THESE NANOWIRES HAVE BEEN MATERIALIZED IN RELATIVELY LOW VACCUM.