1. Department of Intelligent Mechatronics Engineering Sejong University Seoul 05006 South Korea
2. Research Center for Advanced Materials Science (RCAMS) King Khalid University P. O. Box 9004 Abha 61413 Saudi Arabia
3. Department of Physics Faculty of Science King Khalid University P.O. Box 9004 Abha 61413 Saudi Arabia
4. School of Engineering Science Simon Fraser University Burnaby British Columbia V5A 1S6 Canada