earticle

영어

We developed a simple method for fabrication of nanometer distance gap (nanogap). The size of the nanogap was controlled by adjusting the dimension of the window mask and finally the nanogap having a width less than 60 nm was obtained. Furthermore, we used the nanogap for electrical biosensing of biomolecular interaction without labeling. The current was proportionally increased to the concentrations of the charged molecules in the range from 100 fg/ml to 100 ng/ml at 1 V bias. It is expected that the nanogap developed here can be used as a biosensor platform for label-free detection of biomolecular interactions.