Affiliation: | a Department of Electrical and Computer Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466, Japan b Instrument and Analysis Center, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466, Japan c Research Center for Micro-Structure Devices, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466, Japan |