This book includes selected peer reviewed articles presented at the 7th International Conference on Materials Engineering and Nanotechnology 2023 (ICMEN 2023) held on 04-05Nov at Kuala Lumpur in Malaysia. It highlights recent innovative approach and developments in materials engineering and nanotechnology fields. A broad range of topics and issues in modern materials science and nanotechnology are discussed, including advanced materials synthesis and characterization, nanoscale science and engineering, functional composite and nanomaterials, sustainable materials and green technologies. The importance and relevance of these proceedings lie in their contribution to the scientific community's collective knowledge and understanding of materials science/engineering and nanotechnology. By disseminating cutting-edge research findings and innovations, these proceedings foster collaboration, inspire new ideas, and push the boundaries of scientific discovery. Given its scope, this book will be of interest to a wide readership, including materials and nanotechnology engineers, scholars and researchers in science, technology and engineering disciplines.