●Study on the Fundamental Properties of HfO₂-based Ferroelectric Thin Films for Ferroelectric-gate FET Applications（2021.3）
●Study on Photo-induced Phenomena in Strongly Correlated Ferroelectric YMnO₃ Thin Films（2021.3）
●Study on the Electrocaloric Effect in Ferroelectric Thin Films for Heat Pump Applications（2020.3）
●Realization of High-performance Piezoelectric MEMS Vibration Energy Harvester（2019.3）
●Nanoscale Probing of Direct Piezoelectric Properties and Vibrational Energy Harvesting Application of BiFeO₃ Films (2018.3)
●Development of nonlinear piezoelectric vibrational energy harvester for human motion (2017.9)
●Study on the development of BiFeO₃-based lead-free Piezoelectrics (2017.9)
●Control of Spin-Dependent Transport in Rare Earth, Ce, doped Si Epitaxial Thin Films（2017.3）
●Novel Chemical Vapor Deposition Process of ZnO Thin Films using Nonequilibrium Plasma Gererated near Atmospheric Pressure (2016.3)
●Study on Field Effect of Polarizations in Ferroelectric/Polar Semiconductor Heterostructures(2015.3)
●Polarity Effects on the Surface Morphology,Crystal Orientation and the Electronic Structure of ZnO-based Semiconductor Heterointerfaces(2014.3)
●Study on Surface Reaction of Hydrothermally Synthesized Titanate Nanotubes and the Electrical Properties(2014.3)
● Control of Ferroelectric Domain Structure of BiFeO₃ Epitaxial Films For Piezoelectric Device Applications(2013.3)
● Magnetic and Electronic Properties of Ce doped Si Films（2011.3）
● Electrical Property of Controlled-Polarization Type Ferroelectric-Gate Thin Film Transistors（2011.3）
● Growth of YMnO₃ Epitaxial Thin Films and Effect of the Magnetic Ordering on the Ferroelectric Polarization Switching（2011.3）
● Spin Dependent Transport in ZnO Based Diluted Magneric Semiconductor/Semiconductor Heterostructures(2009.2)
● Low-Temperture Molecular Beam Epitaxial Growth and the Magneto-transport Property of Ce-Doped Si Thin Films(2009.2)
● Mn Doping Effect on the Electric and Piezoelectric Properties of ZnO Epitaxial Films(2008.3)
● Novel Nitridation Technique Using Atmospheric Pressure Plasma – Formation Mechanism of Ultrathin Silicon Nitride Film and the Dielectric Property – (2006.3)
● Fabrication and Retantion Property of Ferroelectric Gate Capacitors Using YMnO₃/Y₂O₃/Si Epitaxial System(2003.3)
● Magnetic and Magnetro-Transport Properties of Si-based Diluted Magnetic Semiconductor Si:Ce Films(2003.3)
● Studies on Electro-Optic Properties of ZnO Thin Films for Optical Waveguide Devices(2003.3)
● Preparation of Functionally Graded ZnO Films by Electrochemical Reaction(2001.3)
● Spin Induced Phenomena in Diluted Magnetic Semiconductor(2001.3)
● Influences of Plasma-Induced Damage on Material Properties in Semiconductor Devices(2000.7)
● Application and Characterization of YMnO₃ Films as Transistor Type Ferroelectric Memories(1999.10)
● Study on Strain-Enhanced Structural Changes in Semiconductor Epitaxial Films(1996.12)
● 酸化物超伝導体の相形成および配向制御に関する研究(1994.2)
● Fundamental Studies on Contact Materials in Si Microelectronic Devices(1993.11)