1 NanoTech Lab, Department of Electrical Engineering, Information Technology University (ITU) of the Punjab, Lahore 54600, Pakistan
2 Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
3 Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
4 POSCO-POSTECH-RIST Convergence Research Center for Flat Optics and Metaphotonics, Pohang 37673, Republic of Korea
5 National Institute of Nanomaterials Technology (NINT), Pohang 37673, Republic of Korea
6 e-mail: muhammad.zubair@itu.edu.pk
7 e-mail: kashif.riaz@itu.edu.pk
8 e-mail: qasim.mehmood@itu.edu.pk