Zhao Aiguo is based at the College of Civil Engineering, Nanjing Tech University, Nanjing, Jiangsu, China. Specialties and research interests: Acoustic metamaterials, Fatigue and fracture of materi...ver maisZhao Aiguo is based at the College of Civil Engineering, Nanjing Tech University, Nanjing, Jiangsu, China. Specialties and research interests: Acoustic metamaterials, Fatigue and fracture of materials, Additive manufacturingver menos