1. NPU–NCP Joint International Research Center on Advanced Nanomaterials and Defects Engineering, Northwestern Polytechnical University, Xi’an, Shaanxi, China
2. UNESCO–UNISA Africa Chair in Nanosciences/Nanotechnology, iThemba LABS, Cape Town, South Africa
3. Department of Physics, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh, Saudi Arabia
4. Institute for Tropical Technology, Vietnam Academy of Science and Technology, Hanoi, Viet Nam