This book explores how eco-friendly thin film deposition, entropy-driven alloy design, and advanced surface engineering can be used to create high-performance coatings with minimal environmental impact. It emphasizes the crucial need for materials that not only meet industrial requirements but also adhere to environmental standards. By integrating surface engineering, computational methods, and sustainable practices, the book presents solutions to reduce reliance on toxic and scarce elements, lower production energy costs and carbon emissions, expedite material discovery through efficient, data-driven approaches, and enhance durability and performance in challenging environments. 

The book covers a variety of topics, including sustainable thin film fabrication, key principles of high-entropy alloys (HEAs), green synthesis methods, life cycle assessment, AI-based alloy design, and applications in renewable energy, aerospace, biomedical fields, and extreme conditions. It serves as a resource-efficient roadmap that emphasizes innovation, reduced environmental impact, and scalable manufacturing. The urgent need for alloys that can replace critical or hazardous elements, decrease energy consumption, and achieve superior performance in demanding applications is underscored throughout the text.

Thin Film and High Entropy Alloys for Sustainable Materials: Innovations, Applications, and Environmental Impact offers valuable insights for professionals operating at the intersection of materials innovation, industrial applications, and environmental stewardship. It serves as both a comprehensive reference manual and a strategic roadmap for the future.

Segun Stephen Oladijo, Ph.D., is a member of the research staff in the Department of Chemical, Metallurgical, and Materials Engineering at Tshwane University of Technology, South Africa. He earned his Ph.D. in Mechanical Engineering from the University of Johannesburg, where he specialized in developing innovative high-entropy alloy thin film coatings for structural and biomedical applications.  Dr. Oladijo's current work focuses on creating sustainable, high-performance coatings through advanced materials characterization and thin film technology, as well as using a frugal approach. His research has been published and cited in reputable journals, and his current scholarly efforts include advancing sustainable thin-film technologies. 

Abimbola Patricia Popoola, Ph.D., is a Full Professor at the Tshwane University of Technology (TUT), South Africa, specializing in advanced engineering materials, corrosion science, and sustainable energy. She has authored over 450 articles in refereed journals, produced two patents, and written 50 book chapters, in addition to more than 100 papers in refereed conference proceedings and over 30 oral/poster presentations at national/international conferences. She is an editor of two scholarly books and a recipient of multiple national and institutional research awards. Prof. Popoola was recognized as a Top Female Professor among the top 500 researchers in Africa and the first from TUT.

Michael Oluwatosin Bodunrin, Ph.D., is an Associate Professor at the University of the Witwatersrand, South Africa, specializing in titanium, stainless steel, and alloys for biomedical and structural applications. Dr. Bodunrin has over 60 peer-reviewed journal articles and has contributed to multiple book chapters. He is the founder of the Monodunrin Dream Building, supporting African research collaboration.