1. Thin Film Nano Tech. Lab.Department of Electronic EngineeringChang Gung University (CGU) Taoyuan 33302 Taiwan
2. Department of Obstetrics and GynecologyKeelung Chang Gung Memorial Hospital (CGMH) No. 222, Maijin Rd., Anle Keelung 204 Taiwan
3. Center for Single Atom‐based Semiconductor DeviceDepartment of Material Science and EngineeringPohang University of Science and Technology (POSTECH) Pohang 790‐784 Republic of Korea