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Sasagawa Lab
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A lab that searches for new ceramic materials and functions that go beyond high-temperature superconductivity.
AboutAbout the lab
Opening up the frontier of functional ceramics materials science.
The Sasagawa Lab researches the discovery of surprising new ceramic materials and functions, and the elucidation of their mechanisms.
Copper-oxide ceramics, which should hardly conduct electricity, become superconducting when cooled, at temperatures higher than those of metallic superconductors. Properties like this that defy common sense are the starting point.
The lab takes pride in being able to do everything in-house: making (samples and single crystals with precisely controlled composition), measuring (macroscopic properties and advanced quantum measurements), and thinking and predicting (first-principles calculations).
The lab aims to discover materials that surpass high-temperature superconductors and to understand them.
Key terms
- Superconductivity
- A phenomenon in which electrical resistance drops to zero when a material is cooled below a certain temperature, allowing electricity to flow without loss
- Single crystal
- A crystal in which the atoms are aligned in the same orientation throughout. Essential for accurately measuring the properties of a material
- First-principles calculation
- A method of predicting the properties of a material by computer from only a model of its crystal structure, without using experimental values
NewsLab news
Research results published in Advanced Functional Materials
Master's student wins Excellent Master's Thesis Presentation Award from the Materials Course
Student wins Young Researcher Encouragement Award at the meeting of the Transformative Research Area '2.5-Dimensional Materials Science'
Student wins ISS Best Student Award at ISS2025
Student wins Young Researcher Encouragement Award at the meeting of the Transformative Research Area '2.5-Dimensional Materials Science'
ResearchResearch themes
With the goal of opening up the frontier of functional ceramics materials science, the lab works on discovering discontinuous, surprising new materials and functions and on elucidating their mechanisms. A distinctive feature of the lab is that students can experience the full appeal of materials science research, which is making, measuring, and thinking and predicting, in a self-sufficient style.
*Illustrative imageExploring and designing new materials and properties
From a crystal chemistry perspective, the lab designs settings in which the quantum degrees of freedom of charge, spin, and orbital are intertwined, and realizes them as new ceramic materials using various synthesis techniques. The lab targets functions that will drive near-future electronics, such as electronic ferroelectricity and thermoelectric power generation.
*Illustrative imageDeveloping single crystals of functional materials
Good-quality single crystals are essential for precisely measuring the order and dynamics of quantum degrees of freedom. The lab advances techniques such as growing large single crystals by the traveling solvent floating zone method and crystal growth under high pressure, and attempts to make single crystals of a wide variety of functional materials.
*Illustrative imageUncovering mechanisms with advanced quantum measurements
The lab uses techniques such as angle-resolved photoemission spectroscopy and inelastic X-ray scattering at SPring-8. By measuring the motion of the electrons and phonons that govern material properties, resolved by direction and energy, the lab aims to elucidate the mechanism of high-temperature superconductivity.
MembersFaculty
The members of the Sasagawa Lab consist of faculty, visiting professors, affiliated researchers, and doctoral, master's, and undergraduate students.As of 2026
- Associate ProfessorTakao SasagawaPublications ↗
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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: “Superconductor-levitation” Pongkaew / CC0 (cropped)
- Exploring and designing new materials and properties: “Dense pellet forming7” Dominik Bejma, Marta Kowalkińska / CC BY-SA 4.0 (cropped)
- Developing single crystals of functional materials: “Silicon single crystal” Massimiliano Lincetto / CC BY-SA 4.0 (cropped)
- Uncovering mechanisms with advanced quantum measurements: “Aust.-Synchrotron-Soft-X-ray-Beamline-Experimental-Station” jjron / CC BY-SA 3.0 (cropped)
- Related lab (金子研究室): “Scanning tunneling microscope-MHS 2237-IMG 3817-gradient” Rama / CC BY-SA 3.0 fr (cropped)
- Related lab (平松研究室): “InGaN crystal SEM+CL” FDominec / CC BY 4.0 (cropped)
- Related lab (バッハ研究室): “EFluor Nanocrystal Vials” Travis.jennings / CC BY 3.0 (cropped)
- Related lab (林智広研究室): “Corrective soft contact lenses, with high oxigen permeability” Albarubescens / CC BY-SA 4.0 (cropped)
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