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.

• Distinctive Mechanical and Functional Properties Due to Glide Dislocations in Zinc Sulfide,

  K. Matsunaga,

  47th International Conference and Expo on Advanced Ceramics and Composites (ICACC2023), (Daytona, USA)

  22-27 Jan. 2023, Oral

• DFT calculations of carrier-trapping effects on atomic structures of 30° partial dislocation cores in zincblende II-VI group zinc compounds,
  S. Hoshino, Y. Oshima, T. Yokoi, A. Nakamura, K. Matsunaga,
  Physical Review Materials, 7 (1) 013603, 17 Jan. 2023

• Ca-vacancy effect on stability of substitutional divalent cations in calcium-deficient hydroxyapatite,
  T. Saito, Y. Ishikawa, Y. Noda, T. Yokoi, Y. Oshima, A. Nakamura, K. Matsunaga*, 
  Journal of the American Ceramic Society, 106 (2), 1587-1596, Feb. 2023

• Atomic structures of grain boundaries for Si and Ge: A simulated annealing method with artificial-neural-network interatomic potentials,
  T. Yokoi*, Y. Oshima, K. Matsunaga,
  Journal of Physics and Chemistry of Solids, 173, 111114, Feb. 2023

• Artificial-neural-network descriptor and interatomic potential for molecular simulations of lattice defects,
  T. Yokoi, Y. Oshima, K. Matsunaga,
  6th International Symposium on Frontiers in Materials Science (FMS 2022), (Phu Quoc, Vietnam) 21-23 Nov. 2022, Invited talk

   

  Dislocation-induced gap states in CdTe: A first-principles study,
  S. Hoshino, T. Yokoi, Y. Oshima, K. Matsunaga,

  6th International Symposium on Frontiers in Materials Science (FMS 2022), (Phu Quoc, Vietnam) 21-23 Nov. 2022, Oral

• Grain boundary structures and energetics in CdTe: An artificial-neural-network interatomic potential and first-principles approach,
  T. Yokoi, K. Adachi, Y. Oshima, K. Matsunaga,
  The 33rd International Photovoltaic Science and Engineering Conference (PVSEC-33), (Nagoya, Japan) 13-17 Nov. 2022, Poster 

   

  Dislocation-induced gap states in CdTe: A first-principles study,
  S. Hoshino, Y. Oshima, T. Yokoi, A. Nakamura, K. Matsunaga,
  The 33rd International Photovoltaic Science and Engineering Conference (PVSEC-33), (Nagoya, Japan) 13-17 Nov. 2022, Poster 

   

  Peierls stresses of Basal and Pyramidal Dislocations in ZnO: First-principles approach,
  T. Tanaka, Y. Oshima, T. Yokoi, A. Nakamura, K. Matsunaga,
  The 33rd International Photovoltaic Science and Engineering Conference (PVSEC-33), (Nagoya, Japan) 13-17 Nov. 2022, Poster 

   

  Dislocation structures and photoconductive properties in TiO₂,
  A. Takagi, Y. Oshima, T. Yokoi, A. Nakamura, K. Matsunaga,
  The 33rd International Photovoltaic Science and Engineering Conference (PVSEC-33), (Nagoya, Japan) 13-17 Nov. 2022, Poster 

• Artificial-neural-network potential for accurately predicting atomic structure and physical properties of lattice defects in semiconductors,
  T. Yokoi, 
  The 8th International Symposium on Advanced Science and Technology of Silicon Materials (第8回シリコン材料の先端科学と技術国際シンポジ ウム), (Okayama, Japan) 7-9 Nov. 2022, Invited talk

• Orthorhombic Distortion-induced Anatase-like Optoelectronic Properties of Rutile TiO₂,
  B. Chen*, K. Kang, H. Jeen, Y. Zhang, J. Lin, B. Feng, Y. Ikuhara, S. Hoshino, K. Matsunaga, and H. Ohta*,
  Journal of Applied Physics, 132 (18), 185301, Nov. 2022

• Electronic and atomic structures of dislocation cores in inorganic semiconductors showing distinctive mechanical behavior,

  K. Matsunaga,

  The 23rd Asian Workshop on First-Principles Electronic Structure Calculations (ASIAN-23), (Online)

  31 Oct. – 2 Nov. 2022, Invited talk

• ◆総説

  Ceramic science of crystal defect cores,
  K. Matsunaga, M. Yoshiya, N. Shibata, H. Ohta, T. Mizoguchi,
  Journal of the Ceramic Society of Japan, 130 (8), 648–677, Aug. 2022

• Atomic structures and stability of finite-size extended interstitial defects in silicon: Large-scale molecular simulations with a neural-network potential,
  M. Ohbitsu*, T. Yokoi, Y. Noda, E. Kamiyama, T. Ushiro, H. Nagaoka, K. Sueoka, K. Matsunaga, 
  Scripta Materialia, 214, 114650, June 2022

• First-principles analysis of oxide-ion conduction mechanism in Si-deficient lanthanum silicate apatite,
  Y. Ogura*, T. Yokoi, K. Fujii, M. Yashima, K. Matsunaga,
  The Journal of Physical Chemistry C, 126 (13), 5805–5812, April 2022

Building 5. of Graduate School of Engineering 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.