**Author details**

Mohd Anuar Md Ali<sup>1</sup> , Aminuddin Bin Ahmad Kayani2,3\* and Burhanuddin Yeop Majlis<sup>1</sup>

\*Address all correspondence to: aminuddin.kayani@mmu.edu.my

1 Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan (UKM), Bangi, Selangor, Malaysia

2 Center for Advanced Materials and Green Technology, Multimedia University (MMU), Cyberjaya, Selangor, Malaysia

3 Functional Materials and Microsystems Research Group, School of Engineering, RMIT University, Melbourne, Australia
