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Saito Lab
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The lab combines two-dimensional layered materials with synchrotron radiation to create the next generation of devices.
AboutAbout the lab
Functional electronic materials multiplied by synchrotron radiation.
The Saito Lab creates new materials for electronic devices and investigates their properties.
Its main subjects are two-dimensional layered materials, in which atoms are stacked in layers, and amorphous semiconductors, in which the atoms have no regular arrangement.
The lab combines analysis using synchrotron radiation with simulations based on first-principles calculations and machine learning.
Synchrotron experiments are conducted at NanoTerasu on Aobayama Campus and at SPring-8 in Hyogo Prefecture.
Key terms
- Two-dimensional layered material
- A material in which atoms form thin layers stacked on top of one another. The layers are held together by weak forces
- Amorphous
- A state in which atoms have no regular arrangement. Unlike crystals, it is difficult to analyze by ordinary methods
- Synchrotron radiation
- Intense light such as X-rays, emitted when electrons traveling at nearly the speed of light are bent by magnets
NewsLab news
An undergraduate student received a Poster Award at the fourth-year interim presentation of the Department of Materials Science and Engineering
Review article on the fabrication and applications of layered chalcogenides published in MATERIAL STAGE
Paper on contact materials for MoS2, in collaboration with Keio University, published in Japanese Journal of Applied Physics
Paper on two-dimensional layered materials using amorphous crystallization published in the Journal of the Japanese Association for Crystal Growth
Prof. Saito received the Achievement Award from the Japan Institute of Metals
ResearchResearch themes
The lab creates new materials for electronic devices and clarifies their electronic states and atomic arrangements. By combining analysis with synchrotron radiation and simulations using first-principles calculations and machine learning, it advances materials development efficiently.
*Illustrative imageCreating two-dimensional layered materials
The lab found that metastable layered materials can be obtained by heating amorphous material, whose atoms are randomly arranged, to bring the atoms into order. It has also shown that GeTe2, which does not exist in nature and cannot be made by ordinary methods, exhibits semiconductor properties.
*Illustrative imageBonding layered materials together
In transistors made of two-dimensional materials, contact resistance was a problem because current did not enter the metal electrodes well. By using layered materials for the electrodes as well and forming the interface that way, contact resistance dropped significantly, and drive current increased by 4 to 30 times.
*Illustrative imageNew materials and interfaces for spintronics
For devices that exploit spin, a property of electrons resembling rotation, the lab develops ferromagnets with layered structures and topological materials. It also fabricates stacked films layered at nanometer thicknesses and investigates what happens at their interfaces.
*Illustrative imageMaking layered thin films by sputtering
Even a material with excellent properties cannot be used unless it can be made by a method that suits actual manufacturing processes. The lab develops techniques for depositing Te-based layered thin films such as Sb2Te3 and Bi2Te3, and transition metal dichalcogenides such as MoTe2, over large areas by sputtering, a method also used in mass production.
MembersFaculty
The Saito Lab consists of faculty members, secretaries, PhD and master's students, and undergraduates.As of 2026
- ProfessorYuta Saito
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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: “Molybdenite-251617” Robert M. Lavinsky / CC BY-SA 3.0 (cropped)
- Creating two-dimensional layered materials: “Sample of MoS2” Leiem / CC BY-SA 4.0 (cropped)
- Bonding layered materials together: “Pier2.3 OV7120 CMOS image sensor closeup” Phiarc / CC BY-SA 4.0 (cropped)
- New materials and interfaces for spintronics: “Horseshoe Magnetic Filings (Flipped 180)” Noguarde / CC BY-SA 4.0 (cropped)
- Making layered thin films by sputtering: “Au sputtering light” GcG(jawp) / Public domain (cropped)
- Related lab (Kohda-Suzuki-Ishihara Lab): “Dilution Fridge with Quantum Processors Enclosed 008 8K” OJB Quantum / CC BY 4.0 (cropped)
- Related lab (Nogami Lab): “Iron runners - Trumbull-Cliffs Blast Furnace” "New Trumbull-Cliffs 600-Ton Blast Furance", The Iron Age, September 15, 1921, p. 676 / Public domain (cropped)
- Related lab (Saida Lab): “U.S. Department of Energy - Science - )” U.S. Department of Energy from United States / Public domain (cropped)
- Related lab (Omori-Ito Lab): “Aluminium etched” Alchemist-hp (talk) (www.pse-mendelejew.de) / CC BY-SA 2.0 de (cropped)
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