This collection honoring Professor Jiann-Yang Hwang focuses on characterization and processing development in minerals, metals, and materials. Topics include but are not limited to:• Characterization methodology of minerals, metals, and materials

• Microwave-assisted material processes

• Recycling and reuse of metallurgical byproducts

• Materials for hydrogen storage

• Wastewater treatment and environmental protection

• Natural materials for value-added applications

• Principles and interactions of material characterization and manufacturing processing