**4. Conclusions**

Based on the experimental results and discussion, the following conclusions can be drawn:


**Author Contributions:** Data curation, S.I.; Formal analysis, S.I., J.K.S., M.A.M.A., N.H.A.S.L. and H.-M.Y.; Funding acquisition, H.-S.L. and M.A.M.A.; Investigation, H.-S.L. and J.K.S.; Methodology, S.I., N.H.A.S.L. and H.-M.Y.; Supervision, M.A.M.A. and N.H.A.S.L.; Writing—original draft, S.I., H.-S.L., J.K.S., M.A.M.A., N.H.A.S.L. and H.-M.Y.; Writing—review & editing, S.I., H.-S.L., J.K.S., M.A.M.A., N.H.A.S.L. and H.-M.Y.

**Acknowledgments:** This research was supported by a basic science research program through Research University Grant (RUG) (No. Q.J130000.2522.17H81), with the funding from the Ministry of High Education (MOHE) and Universiti Teknologi Malaysia, as well as the basic science research program through the National Research Foundation (NRF) of Korea funded by the Ministry of Science, ICT and Future Planning (No. 2015R1A5A1037548). The authors wish to express their utmost gratitude to these funding entities, which have allowed the research endeavour to be carried out.

**Conflicts of Interest:** The authors declare no conflict of interest.
