Nanosphere Lithography for Sub‐10‐nm Nanogap Electrodes

Nanogap electrodes are effective tools for probing and detection of single molecules in the field of molecular electronics. By using nanosphere lithography, an innovative approach to prepare sub-10-nm nanogap electrodes is introduced. More significantly, nanogap arrays are also obtained in a reproducible and cost-efficient way. As an application, DNA molecules are assembled into the nanogaps for electrical detection.