Research Keywords Lead-free piezoceramics , dielectric materials, electrocaloric materials Research interests

1. 신소재공학부/School of Materials Science and Engineering Sustainable Functional Ceramics Lab. • 조욱 교수 • Wook Jo • School of Materials Science and Engineering, • Ulsan National Institute of Science and Technology (UNIST) • Office : Engineering BLDG 1. Rm. 301-1 • Lab : Engineering BLDG 1. Rm. 405 • Tel: +82-52-217-2347 • Fax: +82-52-217-2408 • E-mail: wookjo@unist.ac.kr • Curriculum Vitae • 2014~Present: Associate Professor (UNIST) • 2014~Present: International Director at Korean Institute of Electrical and Electronic Material Engineers • 2013~Present: Associate Editor at Journal of the American Ceramic Society • 2012~Present: Editor at Scientific Reports • 2012~Present: Editor at Journal of Electroceramics • 2007~2013 : TechnischeUniversität Darmstadt, Assistant Professor at Institute of Materials Science • 2005~2006 : Seoul National University, Research Associate at the School of Materials Science & Engineering • Academic Credential • 2005: Ph. D. Materials Science & Engineering, Seoul National University • 2003: M. S Materials Science & Engineering, Seoul National University • 2001: B. S. Ceramic Engineering, Yonsei University • Awards/Honors/Memberships • 1st & 2nd most cited articles in 2012 at Journal of Applied Physics • Most active referees at Physica Status Solidi in 2010 & 2011 • 2011: Research highlight at Applied Physics Letters • 2006-Present: Registered at Marquis Who’s Who in Science & Engineering • 2004: Best research awards, Seoul National University • 2003: 1st place award at Ceramograph contest, American Ceramic Society • Research Groups • Emerging Functional Materials Research Group Two emerging keywords in ceramic community are sustainability and tailored functionality for advanced applications. This high-efficient-oriented and eco-friendly approach are to respond properly to the environmental regulations getting tougher and tougher. One of the biggest challenges on this quest lies in the fact that most useful ceramic materials contain nominally toxic elements that should be eventually removed. Our goal is to best-tailor the functionality of ceramic materials to meet the requirements for practical applications in accordance with the environmental appropriateness. Research Keywords Lead-free piezoceramics, dielectric materials, electrocaloricmaterials Research interests High power piezoelectric applications, Large stroke actuator materials, high-efficiency solid-state cooling devices, in situ characterization of functional properties. Ongoing research Topics (selected) 1. Lead-free piezoceramics for actuator applications Research Publications (selected) E. Sapper, A. Gassmann, L. Gjødvad, W. Jo, T. Granzow, and J. Rödel, “Cycling Stability of Lead-Free BNT-8BT and BNT-6BT-3KNN Multilayer Actuators and Bulk Ceramics,” J. Eur. Ceram. Soc.34 [3] (2014) 653-61. C. Groh, D. J. Franzbach, W. Jo, K. G. Webber, J. Kling, L. A. Schmitt, H.-J. Kleebe, S.-J. Jeong, J.-S. Lee, J. Rödel, “Relaxor/Ferroelectric Composites: A Solution in the Quest for Practically Viable Lead-Free Incipient Piezoceramics,” Adv. Funct. Mater., 24 [3] (2013) 356-62. K. Wang, F. Yao, W. Jo, D. Gobeljic, V. V. Shvartsman, D. C. Lupascu, J.-F. Li, and J. Rödel, “Temperature-Insensitive (K, Na)NbO3-Based Lead-Free Piezo Actuator Ceramics,” Adv. Funct. Mater.23 [33] (2013) 4079-86. R. Dittmer, W. Jo, J. Rödel, S. V. Kalinin, and N. Balke, “Nanoscale insight into lead-free BNT-BT-xKNN,” Adv. Funct. Mater.22 [20] (2012) 4208-15. W. Jo, R. Dittmer, M. Acosta, J. Zang, C. Groh, E. Sapper, K. Wang, and J. Rödel, “Giant electric-field-induced strains in lead-free ceramics for actuator applications – status and perspective,” J. Electroceram.29 [1] (2012) 71-93. W. Joand J. Rödel, “Electric-Field-Induced Volume Change and Room Temperature Phase Stability of (Bi1/2Na1/2)TiO3-x mol% BaTiO3Piezoceramics,” Appl. Phys. Lett.99 [4] (2011) 042901, 3pp. W. Jo, D.-Y. Kim, and N.-M. Hwang, "Effect of Interface Structure on the Microstructural Evolution of Ceramics," J. Am. Ceram. Soc.89 [8] (2006) 2369-80. Patents (selected) 1. Dielectric Ceramic Materials and Its Usage as Dielectric Components, German Patent, 10 2012 106 743.0, 04 JUL 2013. 2. Method of Fabricating Polycrystalline Ceramic for Thermoelectric Devices, U.S. patent: US 13/064,222, 3 NOV 2011. 3. Ceramic Material, Method for the Production of the Ceramic Material and Component Comprising the Ceramic Material, EU Patent, PCT/EP2009/055310, 30 APR 2009.