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Matsumoto Lab
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A lab that combines vacuum technology and chemistry to make atomic-scale thin films.
AboutAbout the lab
Cutting-edge chemistry research without test tubes or flasks.
The lab studies solid and liquid thin films by combining vacuum technology and chemistry.
Thin films are materials less than 1 μm thick, and at the extreme only a few atoms thick, and they support today's electronics industry.
The materials the lab handles range widely, from inorganic electronic, magnetic, and superconducting materials to organic semiconductors, liquid crystals, and ionic liquids.
The lab develops processes for making thin films and techniques for diagnosing them, aiming to apply them to semiconductor processes, solar cells, and secondary batteries.
Key terms
- Thin film
- A material made with a thickness of 1 μm or less, and at the extreme only a few atoms thick. It forms the basis of electronic components
- Pulsed laser deposition
- A method in which an intense laser is directed at a source material in a vacuum to evaporate it, depositing a thin film on a substrate facing it
- Ionic liquid
- A salt that remains liquid even at room temperature. It hardly evaporates and conducts electricity
NewsLab news
A master's student received a Poster Award at GCIM2026
A doctoral student received the 2023 SSDM Young Researcher Award
A master's student received the Presentation Encouragement Award at the Annual Meeting of the Japan Society of Vacuum and Surface Science
ResearchResearch themes
The lab fuses vacuum technology and chemistry to make thin films that are as thin as atoms. Its work covers thin-film fabrication processes, diagnostic techniques, the physical properties and functions discovered through them, and the prototyping of devices.
*Illustrative imageLaser-based thin-film deposition equipment
In the lab's original pulsed laser deposition (PLD) system, an ultraviolet laser is directed at a source material in a vacuum comparable to that of outer space. This instantly vaporizes even high-melting-point ceramics and forms a thin film of the target composition and structure on a substrate, built up atom by atom.
*Illustrative imageThin-film synthesis with lasers
The lab is divided into a group working on inorganic ceramics and a group working on organic liquid crystals and ionic liquids. The lab proposed a vacuum deposition method that uses an ionic liquid to synthesize pentacene single crystals in a short time, and also succeeded in making large organic single-crystal thin films via a liquid crystal phase.
*Illustrative imageAnalysis and diagnostic techniques in vacuum
The lab also develops new analysis and diagnostic techniques combined with vacuum technology. Using a vacuum laser microscope that can observe high-temperature solid-liquid interfaces in situ, it captured how steps on crystal faces advance as SiC crystals, which are used in power semiconductors, grow from solution.
*Illustrative imageExploring material functions and prototyping devices
The lab investigates the properties of the thin films it makes and prototypes devices. It produced high-quality SiC thin films using a special process in which the film coexists with a high-temperature melt, and confirmed the rectifying characteristics of a Schottky junction. For LiCoO2, a cathode material for lithium-ion batteries, it found that thin films with optimized composition improve battery performance.
MembersFaculty
The members of the Matsumoto Lab consist of faculty, doctoral, master's, and undergraduate students, and assistants.As of 2025
- ProfessorYuji Matsumoto
- Assistant ProfessorKenichi Kaminaga
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Pulsed Laser Deposition in Action” Adam Andersen Læssøe / CC BY-SA 4.0 (cropped)
- Laser-based thin-film deposition equipment: “Atomic-Scale Growth by Pulsed Laser Deposition ( )” Oak Ridge National Laboratory / CC BY 2.0 (cropped)
- Thin-film synthesis with lasers: “Ionic Liquid Liquid Crystal” Monia Martins / CC BY-SA 4.0 (cropped)
- Analysis and diagnostic techniques in vacuum: “SiC wafers 6inch” FDominec / CC BY-SA 4.0 (cropped)
- Exploring material functions and prototyping devices: “Lithium-ion coin cell batteries in laboratory testing fixture” Chingo K / CC BY 4.0 (cropped)
- Related lab (Kanie Lab): “Gold nanoparticles as indicators” Valeg96 / CC BY-SA 4.0 (cropped)
- Related lab (Homma Lab): “Lithium-Ion Cell cylindric” RudolfSimon / CC BY-SA 3.0 (cropped)
- Related lab (Kasai Lab): “EFluor Nanocrystal Vials” Travis.jennings / CC BY 3.0 (cropped)
- Related lab (Pichierri Lab): “FuranELF” Silvi / CC BY-SA 4.0 (cropped)
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