A Pt field emitter with two adjacent emission sites of a gap size of less than 10 nm was fabricated using electron-be m-induced deposition followed by annealing. The emission patterns of electrons from the two adjacent sites were observed by field-emission microscopy at room temperature and 100 K. The striped emission patterns, corresponding to the interference fringes by electron waves in field emission, were observed for the first time. The fringelike electron-emission patterns in this experiment were found to be in a good agreement with those of the Young's interference from the two emission sites. (c) 2007 American Vacuum Society.