1 Subjects: “...drug release materials...”

2 Subjects: “...reference materials (RMs)...”

3 Subjects: “...material extrusion...”

4 Subjects: “...piezoelectric ceramic materials...”

5 Subjects: “...eco-friendly sound-absorbing material...”

6 Subjects: “...Mechanical engineering and materials / bicssc...”

7 Subjects: “...porous materials...”

8 Subjects: “...porous materials...”

9 Subjects: “...piezoelectric material...”