Method for detecting biomolecules using a capacitive touch screen

摘要

There is provided a method of detecting biomolecules using a capacitive touch screen receiving a touch with a conductor as an input signal to perform an output on a display screen, and more particularly to a method of detecting target biomolecules by applying biomolecules having electrical conductivity to a touch panel and detecting a change in capacitance of a surface of a touch panel generated according to the concentration of the biomolecules.;A method of detecting biomolecule according to the present invention uses a capacitive touch screen capable of being cheaply manufactured on a large scale, such that the method may have advantages such as cheap cost and a short analysis time and simply detect biomolecules in a personal terminal such as a smart phone, a tablet PC, and the like, on which a capacitive touch screen is mounted, as compared to the existing method requiring an expensive exclusive analysis apparatus based on absorbance or fluorescence having a large volume, a skilled experimental technique such as electrophoresis, or a long analysis time to thereby be performed only in an experimental room equipped with specialists and equipment.

主权项

1. A method of detecting biomolecules using a single-touch capacitive touch screen, comprising:
(a) applying a standard sample and at least one biomolecule to be detected on a touch panel of the single-touch capacitive touch screen; (b) laminating an auxiliary panel on which a transparent electrode connected to a wire is coated or an auxiliary panel of which a transparent electrode is coated on both surfaces on the touch panel in the step (a) thereby being the surface coated with the transparent electrode in contact with the touch panel; (c) touching the wire connected to the transparent electrode or the transparent electrode on the surface opposite to the surface in contact with the touch panel using a touch conductor to allow capacitance of a surface of the touch panel to be changed; and (d) measuring a touch signal position using a touch controller to detect a concentration of the biomolecule, wherein in the step (d), a concentration of the biomolecule is calculated by measuring a distance L and an angle θ between the touch signal position on the touch panel measured using the touch controller and the position of the standard sample applied onto the touch panel and then inserting the measured distance L and the angle θ into an equation obtained by the standard sample containing the biomolecule to be detected.