Matsunaga Laboratory

Day by day our lives, societies, and the world around us are becoming increasingly more rich, comfortable and convenient. Still, the earth faces many challenging environmental problems and complex issues such as aging societies and we have to tackle these head on to solve them.

In the laboratory, we study the structure of materials and their micro and macroscopic properties from electronic, atomic and molecular aspects, and aim to connect this expertise to development of various innovative materials, and become pioneers in the area of materials science.

Parallel Computer

This is a parallel computer used in our laboratory.

Stereo microscopes

These are used to check the conditions of samples. We have one stereo microscopes.

Imaging Box

This enables us to take nice pictures of small and beautiful objects such as crystals or jewelries.

Water Purification System

This enables purification of water.

Low Speed Precision Cutters

These are used for cutting various types of materials with minimal deformation. We have two cutters.

Precision polishing machines

These are used to polish brittle materials. We have six polishing machines.

Ion Milling Systems

These can produce high-quality TEM specimens with electron transparency.

Magnetron Sputter Coater

This enables nanoscale thin film deposition on the surface of samples.

Precision universal testing machine

This is used to deform materials with measuring displacements and loads.

Semiconductor Parameter Analyzer

This is used for electrical characterization of semiconducting or insulating materials.

Low-Noise Vacuum Prober station

This is used to measure electric properties of materials from low temperature to high temperature.

Spectrophotometer

This enables scientific measurement of reflection and transmission properties of samples as a function of wavelength.

Time-resolved Spectroscopy Equipment

This is used to measure weak phosphorescence spectra and the lifetime.

Xenon Light Sources

This is used to irradiate lights of the specific wavelength domain to materials. We have two xenon light sources.

Draft Chamber

This is a local exhaust ventilation, which is used to treat toxic chemical substances.

Laser microscope

This is used for observing surface morphology in samples.

• Multicrystalline informatics applied to multicrystalline silicon for unraveling the microscopic root cause of dislocation generation,
  K. Yamakoshi, Y. Ohno*, K. Kutsukake, T. Kojima, T. Yokoi, H. Yoshida, H. Tanaka, X. Liu, H. Kudo, N. Usami*, 
  Advanced Materials, 36(8), 2308599, 22 Feb. 2024

• The effect of room-temperature plastic deformation in darkness on the photoluminescence properties of ZnS,
  Y. Ogura (Y. Oshima)*, A. Nakamura, T. Kameyama, Y. Kurokawa, E. Tochigi, N. Shibata, T. Torimoto, S. Hoshino, T. Yokoi, K. Matsunaga, 
  Journal of the American Ceramic Society, 107 (4), 2040-2047, 1 Feb. 2024

• Electronic and Atomic Structures of Crystal Defect Cores in Advanced Materials,

  K. Matsunaga,

  The 3rd Materials Research Meeting (MRM 2023) / The 24th IUMRS-International Conference in Asia (IUMRS-ICA 2023), (Kyoto, Japan)

  11-16 Dec. 2023, Keynote speech

   

  Artificial-neural-network potential for accurately predicting grain boundary thermodynamics,

  T. Yokoi, M. Matsuura, Y. Ogura, K. Matsunaga,

  The 3rd Materials Research Meeting (MRM 2023) / The 24th IUMRS-International Conference in Asia (IUMRS-ICA 2023), (Kyoto, Japan)

  11-16 Dec. 2023, Poster

   

  Quantum Monte Carlo Method for Formation Energies Point Defects in Si,

  M. Yamada, T. Yokoi, Y. Ogura, K. Matsunaga,

  The 3rd Materials Research Meeting (MRM 2023) / The 24th IUMRS-International Conference in Asia (IUMRS-ICA 2023), (Kyoto, Japan)

  11-16 Dec. 2023, Poster

   

  Artificial-neural-network descriptor and interatomic potential for accurately predicting interaction of lattice defects in Si,

  M. Uchida, T. Yokoi, Y. Ogura, K. Matsunaga,

  The 3rd Materials Research Meeting (MRM 2023) / The 24th IUMRS-International Conference in Asia (IUMRS-ICA 2023), (Kyoto, Japan)

  11-16 Dec. 2023, Poster

• Bringing the photoplastic effect in ZnO to light: A photoindentation study on pyramidal slip,
  H. Oguri*, Y. Li, E. Tochigi, X. Fang, K. Tanigaki, Y. Ogura (Y. Oshima), K. Matsunaga, A. Nakamura,
  Journal of the European Ceramic Society, 44(2), 1301-1305, Feb. 2024

• Electronic and atomic structures of glide dislocations in inorganic semiconductors relevant to their light-illumination dependent mechanical behavior,

  K. Matsunaga,

  The 11th Pacific Rim International Conference on Advanced Materials and Processing (PRICM11), (Jeju, South Korea)

  19-23 Nov. 2023, keynote speech

• Artificial-neural-network potentials for accurately predicting lattice-defect properties,

  T. Yokoi, M. Uchida, Y. Ogura0, K. Matsunaga,

  The 15th Pacific Rim Conference of Ceramic Societies (PACRIM15), (Shenzhen, China)

  5-9 Nov. 2023, Invited

• Electronic and atomic structures of Shockley-partial dislocations in CdX (X = S, Se and Te),
  S. Hoshino*, T. Yokoi, Y. Ogura (Y. Oshima), K. Matsunaga,
  Journal of the Ceramic Society of Japan, 131(10), 613-620, 1 Oct. 2023

• Photoplastic effect in MgO single crystals,
  Y. Ogura (Y. Oshima)*, Y. Tsuchiya, S. Hoshino,  T. Yokoi, K. Matsunaga,
  Journal of the Ceramic Society of Japan, 131(10), 628-631, 1 Oct. 2023

• Direct observation of intrinsic core structure of a partial dislocation in ZnS,
  B. Feng*, S. Hoshino, B. Miao, J. Wei, Y. Ogura (Y. Oshima), A. Nakamura, E. Tochigi, K. Matsunaga, Y. Ikuhara, N. Shibata,
  Journal of the Ceramic Society of Japan, 131(10), 659-664, 1 Oct. 2023

• Grain boundary segregation of Y and Hf dopants in α-Al₂O₃: A Monte Carlo simulation with artificial-neural-network potential and DFT calculation,
  T. Yokoi*, A. Hamajima, Y. Ogura (Y. Oshima), K. Matsunaga,
  Journal of the Ceramic Society of Japan, 131(10), 751-761, 1 Oct. 2023

• Strain-rate insensitive photoindentation pop-in behavior in ZnS single crystals at room temperature,
  Y. Li*, H. Oguri, A. Matsubara, E. Tochigi, X. Fang, Y. Ogura (Y. Oshima), K. Matsunaga, A. Nakamura,
  Journal of the Ceramic Society of Japan, 131(10), 685-689, 1 Oct. 2023

• Anharmonicity in grain boundary energy for Al: thermodynamic integration with artificial-neural-network potential,
  M. Matsuura, T. Yokoi*, Y. Ogura (Y. Oshima), K. Matsunaga, 
  Scripta Materialia, 236, 115685, Nov. 2023

• Shedding new light on the dislocation-mediated plasticity in wurtzite ZnO single crystals by photoindentation,
  Y. Li*, X. Fang, E. Tochigi, Y. Ogura (Y. Oshima), S. Hoshino, T. Tanaka, H. Oguri, S. Ogata, Y. Ikuhara, K. Matsunaga, A. Nakamura,

  Journal of Materials Science & Technology, 156, 206-216, 1 Sep. 2023

• Quantum structures of dislocation cores in inorganic semiconductor crystals,

  K. Matsunaga,

  The 4th Workshop on Functional Materials Science (FMS2023), (Busan, South Korea)

  18-21 June. 2023, keynote speech

   

  Carrier-trapping effects on glide dislocation cores in Cd compound semiconductors,

  S. Hoshino, Y. Ogura, T. Yokoi, K. Matsunaga,

  The 4th Workshop on Functional Materials Science (FMS2023), (Busan, South Korea)

  18-21 June. 2023, Poster

  Outstanding Presentation Award

• Grain-boundary thermodynamics with artificial-neural-network potential: Its ability to predict the atomic structures, energetics and lattice vibrational properties for Al,
  T. Yokoi*, M. Matsuura, Y. Ogura (Y. Oshima), K. Matsunaga,
  Physical Review Materials, 7 (5),053803, 17 May 2023

• Atomic and electronic structure of grain boundaries in α-Al2O3: A combination of machine learning, first-principles calculation and electron microscopy,
  T. Yokoi*, A. Hamajima, J. Wei, B. Feng, Y. Ogura (Y. Oshima), K. Matsunaga, N. Shibata, Y. Ikuhara,
  Scripta Materialia, 229, 115368, May 2023

• Room-temperature plastic deformation modes of cubic ZnS crystals,
  S. Kitou*, Y. Ogura (Y. Oshima), A. Nakamura, K. Matsunaga, H. Sawa, 
  Acta Materialia, 247, 118738, 1 April. 2023

Emergent/Innovative Engineering Building, Furo-chou, Chikusa ku, Nagoya city, Aichi 464-8603

Nagoya University Graduate School of Engineering Department of Materials Science and Engineering

To Higashiyama Campus
From Nagoya Station: Take the Subway Higashiyama Line to Motoyama Sta. (15 minutes), then transfer to the Subway Meijo Line to Nagoya Daigaku Station.