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About RIEC Introduction Message from the Director Principles, Missions, Objectives Institute Vision Organization People, Land and Buildings, Budgets History Chronology International Activities COE of International Research Collaboration How to study at RIEC Organization Computing System Platforms Division Solid State Electronics Dielectric Nano-Devices Materials Functionality Design Spintronics Nano-Integration Devices and Systems Quantum Devices Innovative Spintronic Device Computing Information Theory New Paradigm VLSI System Information Communication Platforms Division Ultrahigh-Speed Optical Communication Group Applied Quantum Optics Group Advanced Wireless Information Technology Information Storage Systems Ultra-Broadband Signal Processing Quantum-Optical Information Technology Network Architecture Environmentally Conscious Secure Information System Human and Bio Information Systems Division Electromagnetic Bioinformation Engineering Advanced Acoustic Information Systems Visual Cognition and Systems Realｰworld computing Nano-Bio Hybrid Molecular Devices Interactive Content Design Soft Computing Integrated System Research Facilities Laboratory for Nanoelectronics and Spintronics Laboratory for Brainware Systems Research Center for 21st Century Information Technology（IT-21 Center） Common Research Facilities Flexible Information System Center Fundamental Technology Center Management Office for Safety and Health Promotion Office Ad-hoc research groups Co-creation Research Center Furukawa Electric x Tohoku Univ. Co-creation Research Center for Photonics Integration Staff Cooperative Research About RIEC Cooperative Research Projects Public Invitation RIEC Nation-wide Application System List of Research Projects Description of acknowledgment RIEC Annual Meeting FY2023 RIEC Annual Meeting FY2022 RIEC Annual Meeting International Exchange International Activities COE of International Research Collaboration Information What’s New Award News Press Release Event RIEC Annual Meeting Projects Type-T (Study Groups on Electrical Communication) Lecture Symposiums Nation-wide Cooperative Study Group Archives RIEC NEWS WEB Latest version of the Archives RIEC, Tohoku University : Back number Annual Report of RIEC : Back Number RIEC NEWS Back Number Other Call For Proposals RIEC Administrative Office (Japanese Website) Educational Activities 日本語 English About RIEC Introduction Message from the Director Principles, Missions, Objectives Institute Vision Organization People, Land and Buildings, Budgets History Chronology International Activities COE of International Research Collaboration How to study at RIEC Organization Computing System Platforms Division Solid State Electronics Dielectric Nano-Devices Materials Functionality Design Spintronics Nano-Integration Devices and Systems Quantum Devices Innovative Spintronic Device Computing Information Theory New Paradigm VLSI System Information Communication Platforms Division Ultrahigh-Speed Optical Communication Group Applied Quantum Optics Group Advanced Wireless Information Technology Information Storage Systems Ultra-Broadband Signal Processing Quantum-Optical Information Technology Network Architecture Environmentally Conscious Secure Information System Human and Bio Information Systems Division Electromagnetic Bioinformation Engineering Advanced Acoustic Information Systems Visual Cognition and Systems Realｰworld computing Nano-Bio Hybrid Molecular Devices Interactive Content Design Soft Computing Integrated System Research Facilities Laboratory for Nanoelectronics and Spintronics Laboratory for Brainware Systems Research Center for 21st Century Information Technology（IT-21 Center） Common Research Facilities Flexible Information System Center Fundamental Technology Center Management Office for Safety and Health Promotion Office Ad-hoc research groups Co-creation Research Center Furukawa Electric x Tohoku Univ. Co-creation Research Center for Photonics Integration Staff Cooperative Research About RIEC Cooperative Research Projects Public Invitation RIEC Nation-wide Application System List of Research Projects Description of acknowledgment RIEC Annual Meeting FY2023 RIEC Annual Meeting FY2022 RIEC Annual Meeting International Exchange International Activities COE of International Research Collaboration Information What’s New Award News Press Release Event RIEC Annual Meeting Projects Type-T (Study Groups on Electrical Communication) Lecture Symposiums Nation-wide Cooperative Study Group Archives RIEC NEWS WEB Latest version of the Archives RIEC, Tohoku University : Back number Annual Report of RIEC : Back Number RIEC NEWS Back Number Other Call For Proposals RIEC Administrative Office (Japanese Website) Educational Activities 日本語 English Dielectric Nano-Devices HOME > Research Activities > Computing System Platforms Division > Dielectric Nano-Devices &＃62;&＃62; Computing System Platforms Division Dielectric Nano-Devices Researcher [ Associate Professor ]Kohei Yamasue[ Associate Professor ]Yoshiomi Hiranaga Group Web Site http://www.d-nanodev.riec.tohoku.ac.jp/english/index.html Research Activities The aim and target of the dielectric nano-devices laboratory are developing the research on the dielectric measurement of electronic materials using nano-technologies and applying its fruits to high-performance next generation electronic devices.Our main area of interest is evaluation and development of dielectric materials, including ferroelectric and piezoelectric materials and their application to communication devices and ferroelectric data storage systems. Our major contributions to advancement in these fields are the invention and the development of “Scanning Nonlinear Dielectric Microscope” (SNDM) which is the first successful purely electrical method for observing the ferroelectric polarization distribution without the influence of the shielding effect by free charges and it has already been put into practical use. The resolution of the microscope has been improved up to atomic scale-order. Therefore, it has a great potential for realizing the ultra-high density ferroelectric recording system. Our recent research achieved the recording density of 4 Tbit/inch2 in actual information storage, requiring an abundance of bits to be packed together (Fig.1).Moreover, we have started the novel applications of SNDM to the evaluation of semiconductors such as dopant profiling in SiC power devices (Fig.2) and defect imaging in buried dielectric-semiconductor interfaces. Because SNDM can detect very small capacitance variation, it can be a very powerful evaluation tool for various materials. Now SNDM evolves into a new evaluation technique for insulator and semiconductor materials besides ferroelectric materials (Fig.3). Fig1. Ultra-high density actual information storage using ferroelectric nano-domain manipulation (4Tbit/inch²) Fig2. Dopant profile measurement of SiC power MOSFET Fig3. Atomic resolution imaging of graphene on SiC by ultrahigh vacuum noncontact scanning nonlinear dielectric potentiometry Nanoscale Dielectric Measurement Systems (Assoc. Prof. Yamasue) Research topics Development of noncontact scanning nonlinear dielectric microscopy and potentiometry with atomic-resolutionDevelopment of multifunctional time-resolved scanning probe microspectroscopy system and its application to the evaluation of the next-generation electronic materials and devices We intend to contribute to future information and communication technology through the creation of an innovative nano- and atomic-scale measurement platform for the evaluation of the emerging electronic materials and devices. In particular, we are developing scanning nonlinear dielectric microscopy and potentiometry for the atomic-scale investigation of material properties regarding electric polarization on surfaces and interfaces. We are also working on the establishment of a multifunctional time-resolved scanning probe microspectroscopy system. By integrating it with simulation and data-driven approach, we aim to realize advanced analysis and characterization of next-generation materials and devices including two-dimensional crystals and wide bandgap semiconductors. Dielectric Materials Science and Engineering(Assoc. Prof. Hiranaga) Research topics Development of ferroelectric probe data storageDevelopment of nanoscale characterization methods for ferroelectric/piezoelectric materials and devices We are promoting research aimed at the practical application of ferroelectric probe data storage, and are conducting a wide range of research and development from the production and evaluation of recording media to the prototype development of the read/write system. In addition, we are focusing on the evaluation of ferroelectric and piezoelectric materials using scanning nonlinear dielectric microscopy. We are developing the advanced measurement system for revealing nanoscale dynamics of polarization reversal behavior aiming at contributing to the progress of this field. 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