Scope of Research:

• Lithium-ion battery safety test
• Characterization of Lithium-ion battery and thermoelectric materials
• Thermal transport properties of materials: thermal conductivity and thermal diffusivity

Education:

• Ph.D. (Physics) The Ohio State University, 2010
• M.S. (Physics) Tsinghua University, 2003
• B.S. (Physics) Tsinghua University, 2000

Education Disciplines:

• Physics, Condensed Matter Physics

Professional Societies:

• American Physical Society (APS)
• Materials Research Society (MRS)

Honors and Awards:

• Physics Department Fellowship, The Ohio State University  2003
• Graduate Student Scholarship, Tsinghua University  2002
• Graduate Student Scholarship, Tsinghua University  2001

Publications

• W. Cai, K. –B. Park, and J. P. Pelz, Nanometer-resolution measurement and modeling of lateral variations of the effective work function at bi-layer Pt/Al/SiO2 interface, Physical Review B 80, 165322 (2009).
• W. Cai, S. E. Stone, J. P. Pelz, L. F. Edge, and D. G. Schlom, Conduction band energies and hot-electron transport characteristics in epitaxial Sc2O3/Si (111) studied by Ballistic Electron Emission Microscopy and Internal Photoemission, Applied Physics Letter 91, 042901 (2007).
• H. Haick, J. P. Pelz, T. Ligonzo, M. Ambrico, D. Cahen, W. Cai, C. Marginean, C. Tivarus and R. T. Tung, Controlling Au/n-GaAs junctions by partial molecular monolayers, Physica Status Solidi A-Applications and Materials Science 203, 3438 (2006).
• M.H. Zhu, Y. G. Zhao, W. Cai, X. S. Wu, S. N. Gao, K. Wang, L. B. Luo, H. S. Huang, L. Lu., Spin-glass shell and magnetotransport properties of a La0.67Ca0.33MnO3 nanoring network, Physical Review B 75, 134424 (2007).
• X. S. Wu, W. Cai, X. P. Zhang, Y. G. Zhao and L. Lu, Coexistence of two types of spin glass phases in polycrystalline films of La2/3Ca1/3MnO3, Journal of Physics-Condensed Matter 17, 6981 (2005).
• Y. G. Zhao, W. Cai, X. S. Wu, X. P. Zhang, K. Wang, S. N. Gao, L. Lu and J. Zhu, Electrical transport and magnetic properties of nanostructured La0.67Ca0.33MnO3, Applied Physics A-Materials Science & Processing 81, 607 (2005).
• Y. G. Zhao, W. Cai, J. Zhao, X. P. Zhang, R. Fan, B. S. Gao, M.H. Zhu, T. Wu, S. B. Ogale, S.R. Shinde, T. Venkatesan, Q.Y.Tu, T.K. Mandal, and J. Gopalakrishnan, Insulator-metal transition and magnetoresistance of La0.5Ca0.5MnOy induced by tuning the oxygen content, Journal of Applied Physics 92, 5391, (2002).
• Y. G. Zhao, W. Cai, J. Zhao, X. P. Zhang, B. S. Gao, M.H. Zhu, L.W. Zhang, S. B. Ogale, T. Wu, T. Venkatesan, L. Lu, T.K. Mandal, and J. Gopalakrishnan, Electrical transport and magnetic properties of La0.5Ca0.5MnO3-y with varying oxygen content, Physical Review B 65, 144406 (2002).
• W. Cai, Y. G. Zhao, Y. Z. He, L.W. Zhang, M.H. Zhu, H.S. Huang, M. L. Liu, B. S. Gao, Effect of oxygen content on the electrical transport properties of La0.4Ca0.6MnO3-y, Physica Status Solidi A-Applied Research 187, 529 (2001).