This work was supported by research fund of the Faculty of
Engineering, Khon Kaen University; the Higher Education Research
Promotion and National Research University Project of Thailand,
Office of the Higher Education Commission, through the Advanced
Functional Materials Cluster of Khon Kaen University. The authors
also would like to acknowledge the support of the Thailand
Research Fund (TRF) and Khon Kaen University under the Royal
Golden Jubilee Ph.D. Program (Grant No. PHD/0195/2557), TRF
Research Career Development (Grant No. RSA5780013), and TRF
Senior Research Scholar (Grant No. RTA5780004).