**Sangwon Park**

Sang-won Park is a Professor and Head of the Department of Prosthodontics at the School of Dentistry, Chonnam National University, and also the director of the Biomedical Evaluation and Research Center, at the School of Dentistry, Chonnam National University. He obtained his M.S. (1988) and Ph.D. (1995) from the School of Dentistry, Chonnam National University. He was the Chairman of the Department of Prosthodontics and general director of Chonnam National University Hospital (2003–2011). His research deals with the design and development of zirconia and bio-ceramic 3D printing, implant surface modifications, and dental and biomaterials for clinical applications.

## **John G. Fisher**

John Fisher is an Associate Professor in the School of Materials Science and Engineering at Chonnam National University. He graduated from the Department of Engineering Materials, University of Sheffield, United Kingdom, with a Ph.D. in July 1999. He worked as a postdoctoral researcher at the Korea Institute of Energy Research from 1999 to 2001, studying the reaction bonding of Si3N4. He then moved to the Korea Advanced Institute of Science and Technology (KAIST) from 2001 to 2005 as a postdoctoral researcher and visiting professor. At KAIST, he worked on single crystal growth of Pb(Mg1/3Nb2/3)O3–35 mol% PbTiO3 and abnormal grain growth behaviour in BaTiO3. From 2005 to 2007, he was a postdoctoral researcher at the Jozef Stefan Institute, Slovenia, ˇ studying single crystal growth of (K0.5Na0.5)NbO3. He returned to KAIST in 2007 and continued studying (K0.5Na0.5)NbO3. In July 2010, he became an Assistant Professor in the School of Materials Science and Engineering at Chonnam National University. His research interests are the processing and characterization of ceramics and single crystals for lead-free piezoelectric applications. He has authored or co-authored 54 SCI(E) manuscripts and 2 book chapters.
