1. Institute of Applied DNA Computing, Meiji University, 1-1-1 Higashi-mita, Tama-ku, Kawasaki, Kanagawa-ken, 214-8571, Japan. Tel.: Fax: ; E-mail: zuwairie@isc.meiji.ac.jp
2. Department of Microelectronics and Computer Engineering, Faculty of Electrical Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor Darul Takzim, Malaysia