Acknowledgements
We wish to thank the Thailand Research Fund (TRF)
for providing financial support through the Royal GoldenJubilee Ph. D. Program and the TRF Research Grant
BRG5380020; the Thailand’s Office of the Higher Education
Commission through the National Research University
(NRU) Project; and the National Nanotechnology Center
(NANOTEC), National Science and Technology Development
Agency (NSTDA), through the project P-10-11345;
including the Graduate School of Chiang Mai University
through a general support.