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Suto-Ando Lab
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The lab controls phases and interfaces in materials to create everything from memory to lightweight alloys.
AboutAbout the lab
Phase control and interface control of materials.
Suto-Ando Lab studies how to bring out the performance and functions of materials through phase control and interface control.
Its work spans the atomic scale, such as the states of electrons and chemical bonds, up to the nano- and microscale of crystal microstructures.
The targets range from devices that handle electricity to devices that function as structural materials.
The lab develops next-generation phase-change memory materials and a shape-memory magnesium alloy, the first of its kind discovered in the world.
Key terms
- Phase-change material
- A material whose electrical resistance changes greatly when its state changes, for example between crystalline and amorphous
- Shape-memory alloy
- An alloy that returns to its original shape after being deformed, when heated or when the applied force is removed
- Polymorphic transition
- A change in which a substance of the same composition changes only its atomic arrangement (crystal structure)
NewsLab news
Press release on research results concerning one-dimensional NbTe4
Associate Professor Ando received the 18th Aoba Engineering Promotion Society Award
Press release on research results concerning Cr2Ge2Te6
Press release on research results concerning chromium nitride
Press release on research results concerning ZrTe5
ResearchResearch themes
The lab aims to bring out the performance and functions of various intelligent devices to their limits, from devices that handle electricity to structural functional devices. To do so, it works on controlling the phases of materials at the atomic scale, and on creating and improving functions by controlling the physical properties and microstructures of material interfaces.
*Illustrative imageNext-generation phase-change memory materials
Phase-change memory records data using changes in electrical resistance that accompany changes in a material's crystal structure. Focusing on polymorphic transitions, which require only a slight change in atomic arrangement, the lab develops materials that can operate with lower energy and at higher speed.
*Illustrative imageNew uses for phase-change materials
Phase-change materials have been used as the recording layers of optical discs and memory. Taking advantage of phase changes between a semiconductor and a metal and of other properties not found in other materials, the lab aims to extend their use to devices such as strain sensors, vibration energy harvesters, and high-frequency switches.
*Illustrative imageMaterials whose resistance does not change with temperature
Electrical circuits in every kind of product need resistors. Using iron-aluminum alloys with a small temperature coefficient, achieved by controlling their phases and crystal microstructures, as well as phase-change materials, the lab develops materials for "zero temperature coefficient" resistors whose resistance stays constant over a wide temperature range.
*Illustrative imageShape-memory magnesium alloy
By adding scandium to magnesium and controlling its crystal structure, the lab discovered for the first time in the world that a magnesium alloy can show shape-memory properties. The material is lighter than conventional shape-memory alloys, and stronger and more ductile than conventional magnesium alloys.
MembersFaculty
Suto-Ando Lab members consist of faculty, secretaries, doctoral and master's students, and undergraduate students.As of 2025
- ProfessorYuji Suto
- Associate ProfessorDaisuke Ando
- Assistant ProfessorShuang Yi
VoicesStudent voices
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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: “Tellurium crystals” Hi-Res Images of Chemical Elements / CC BY 3.0 (cropped)
- Next-generation phase-change memory materials: “1645RT2U TM3030” ZeptoBars / CC BY 3.0 (cropped)
- New uses for phase-change materials: “DMS Messrosette” Original uploader and author is Devil m25 at de.wikipedia / CC BY-SA 3.0 (cropped)
- Materials whose resistance does not change with temperature: “3 Resistors” Afrank99 / CC BY-SA 2.5 (cropped)
- Shape-memory magnesium alloy: “Chittenden Locks during large lock maintenance 052 - magnesium anode” Joe Mabel / CC BY-SA 4.0 (cropped)
- Related lab (Yoshimi-Sekido-Kaneko Lab): “Inlet of jet engine” Tony Hisgett from Birmingham, UK / CC BY 2.0 (cropped)
- Related lab (Narushima-Ueda Lab): “Root analogue ceramic dental implant vs titanium screw type implant” Logicwhatelse / CC BY-SA 4.0 (cropped)
- Related lab (Miyamoto Lab): “Steel truss bridge over Fiskelva river in Nordreisa, Troms og Finnmark, Norway, 2022 August” Ximonic (Simo Räsänen) / CC BY-SA 4.0 (cropped)
- Related lab (Ichitsubo Lab): “Magnesium crystals” Warut Roonguthai / CC BY-SA 3.0 (cropped)
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