Nanotechnology continues to be a transformative path for new technologies, driving the creation of new smart materials with desirable characteristics that can be used in a great variety of applications. Many of these applications require the use of advanced functional graded materials. Functionally graded nanomaterials (FGNMs) are innovative materials with qualities that change with their dimensions, and so possess different characteristics compared to bulk materials due to their high surface to volume ratio.

Current challenges in the development of FGNMs include new methods of synthesis, characterization, and development for specific needs in a wide range of engineering fields. During the development of FGNMs, the agglomeration of nanoparticles is a critical issue that must be eliminated in proper approaches to ensure improved performance. High heat gradients can be tolerated by FGNMs and due to this show great potential for applications in aerospace industries. Through the innovative integration of inorganic and organic materials, FGNMs have the ability to resist the propagation of cracks during fracture, enabling them to be used in numerous sectors including nuclear energy, aerospace, biology, optics, electromagnetics, and energy, among other fields.

This Special Issue deals with manuscripts investigating FGNMs and basic concepts, experimental studies, and numerical studies on nanomaterials in the below listed areas. We hope to bring together scientists, academics, and researchers working on recent experimental and/or theoretical findings in FGNMs. We welcome both original research and review articles.

Potential topics include but are not limited to the following:

• Potential topics include but are not limited to:
• Synthesizing routes and characterization of FGNMs
• Structural applications of FGNMs
• Sustainable energy development using FGNMs
• Environmental impact of FGNMs
• Multifunctional nanomaterials
• Nanocomposites
• Nanocoatings for improved performance
• Machining of FGNMs
• Nanomaterials in heat transfer applications
• Thermal behavior of FGNMs
• Additive manufacturing of FGNMs
• Numerical simulation of FGNMs performance