Patent ID: 7510663

Claim:
A method for manufacturing an organic molecular device comprising the steps of: a) providing a substrate of a resistive insulating material having an insulating layer formed on an upper surface and forming a lower electrode on the insulating layer; b) forming a predetermined size of a sacrificial layer pattern on an entire upper surface of the substrate including the lower electrode and the insulating layer; c) using a photo etching technique to remove a portion of the sacrificial layer excluding a predetermined area covering the lower electrode so that a remaining portion of the sacrificial layer surroundsâ€”the lower electrode; d) covering the entire remaining surface from step c including the remaining portion of the sacrificial layer surrounding the lower electrode with a polymer and forming a polymer pattern with a line width of 50 nm using electron beam etching to expose the sacrificial layer and the substrate on which the lower electrode is formed; e) forming an upper electrode by depositing metal on an entire-upper surface from step d) and removing metal on the polymer pattern by a lift-off process so that an upper electrode is formed on the remaining portion of the sacrificial layer so as to have an air-bridge configuration and to surround upper and side surfaces of the lower electrode and to be on an exposed portion of the insulating layer; f) removing the sacrificial layer so that a nanogap is formed between the upper electrode and the lower electrode; and g) adsorbing conductive organic molecules between the upper electrode and the lower electrode, wherein the sacrificial layer pattern is formed of an organic material, an oxide film, a metal film, or a combination thereof having different etching selection ratios with respect to the insulating layer, the sacrificial layer pattern is formed in a nanometer thickness and the nano gap is formed with vertical and horizontal distances between the upper and lower electrodes wherein the horizontal distances are larger than the vertical distance.