Novel materials like high-entropy alloys, natural fiber and synthetic-based composites, and semiconductor core/shell nanomaterials significantly contribute to engineering and manufacturing advancements. High-entropy alloys offer superior mechanical properties, high-temperature strength, corrosion, and wear resistance, making them ideal for various applications. Natural fiber and synthetic-based composites provide lightweight, low-cost, and environmentally friendly alternatives, enhancing performance in industries like aerospace and automotive. Semiconductor core/shell nanomaterials offer unique optical, electronic, and mechanical properties, enabling innovations in solar cells, sensors, and biomedicine. These materials drive the development of more efficient, sustainable, and advanced engineering solutions.