HOLE FORMATION METHOD AND MEASUREMENT DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a hole formation method capable of opening a hole in a desired place of a thin film.SOLUTION: A first voltage is applied between two electrodes installed by sandwiching a film in the electrolytic solution while irradiating light to the film in an electrolytic solution 105 with respect to an insulating film 101 mounted with a near-field light emission element 203 or after providing the film in an electrolytic solution after irradiating light to the film, and after that, a second voltage is applied between the two electrodes, and a procedure of detecting a current value flowing between a first electrode and a second electrode by applying the second voltage is stopped when the current value reaches or exceeds a predetermined threshold value.