Affiliation: | (1) Department of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung, 804, Taiwan, R.O.C.;(2) Department of Electronics Engineering and Computer Science, Tung-Fang Institute of Technology, Kaohsiung, 804, Taiwan, R.O.C.;(3) Department of Electrical Engineering, National Sun Yat-Sen University, Kaohsiung, 804, Taiwan, R.O.C.;(4) Department of Physics, National Sun Yat-sen University, Kaohsiung, 804, Taiwan, R.O.C. |