Time goes by so fast. The end of year 2018 has arrived as well as the second issue of Thai Journal of Nanoscience and Nanotechnology (TJNN) volume 3. In this issue, five interesting peer-reviewed articles were published, and we hope they will be useful for our readers. The fourth year of TJNN is about to start. We hope year 2019 will be our great year. For this 2019 new year greeting season, we wish our readers have good health, lots of happiness and to success in all you do over the coming year. Happy New Year 2019.