Development of a novel powder sheets printing process towards the next generation of additive manufacturing: the role of laser defocusing oleh Wenyou Zhang, William M. Abbott, Arnoldas Sasnauskas, Asli Coban, Bobby Gillham, Ioannis Bitharas, Shun Lu, Jennifer Quirke, Siyuan Ruan, Kyle Perkins, Kevin Synnatschke, Matthias Moebius, Shuo Yin, Andrew Moore, Ramesh P. Babu, Rocco Lupoi