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Advanced Functional Materials Lab
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The lab creates materials whose properties switch in response to external stimuli.
AboutAbout the lab
Bringing out the potential within materials
The Advanced Functional Materials Lab studies materials whose optical, magnetic, and electrical properties switch in response to external stimuli such as light, pressure, and temperature.
Its main subjects are metal complexes and metal oxides, and the lab handles everything itself, from synthesis to measurement of physical properties and theoretical calculations.
The lab's research keywords are "phase transition," "phase control," "bistability," and "switching."
The lab conducts research using elements that are friendly to the global environment and to people.
Key terms
- Phase transition
- A phenomenon in which the state or properties of a material switch to another state or set of properties in response to stimuli such as light, pressure, or temperature
- Bistability
- A property in which a material has two states that can be switched between by stimuli, and both states remain stable
- Metal complex
- A compound formed when other molecules or ions bind around a metal ion
NewsLab news
A paper on pressure-induced water harvesting, with a doctoral student as first author, was accepted by J. Mater. Chem. A
A paper on an FeW octacyano metal complex, with a master's student as first author, was accepted by Eur. J. Inorg. Chem.
A doctoral student won a Poster Prize Award at the 3rd Asian Conference on Molecular Magnetism
A doctoral student won a Best Poster Presentation Award at the European Conference on Molecular Magnetism 2024
A paper on the synthesis of lambda-type trititanium pentoxide, with a master's student as first author, was accepted by Mater. Advances
ResearchResearch themes
The lab aims to create new materials and functions that benefit society, using elements that are friendly to the global environment and to people. Focusing on metal complexes and metal oxides, it studies environmentally friendly functional materials whose properties change reversibly in response to external stimuli such as light, pressure, and temperature.
*Illustrative imageCyanido-bridged metal complexes and molecular magnetic materials
Among molecular magnetic materials, the lab focuses on cyanido-bridged metal complexes. It has reported a variety of phase transitions, including color switching induced by temperature or light and a phenomenon in which magnetism is switched on and off with blue and green light.
*Illustrative imageTitanium oxide
Among titanium oxides, the lab investigates lambda-type Ti3O5 and Ti4O7. For the former, it controls properties through synthesis and works to clarify the physics of the phase transition. For the latter, it controls physical properties by changing particle size and morphology.
*Illustrative imageIron oxide and epsilon-type ferrite
The lab focuses on epsilon-type iron oxide, which was first reported in 2004 and shows giant coercivity. It studies the origin of its anisotropic crystal growth, the control of magnetic properties through particle size, and its usefulness as a probe tip for magnetic force microscopy.
*Illustrative imageSingle-molecule magnets with diverse functions
The lab is building network structures of lanthanoid complexes in order to incorporate diverse functions into a single material. The trinuclear molecular complex it synthesized combines near-infrared luminescence, behavior useful for magnetic recording media, and proton-driven superionic conduction.
MembersFaculty
The members of the Advanced Functional Materials Lab consist of faculty, support staff, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorHiroko Tokoro
- Assistant ProfessorJunhao Wang
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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: “Apophyllite 100” Kent G. Budge / CC0 (cropped)
- Cyanido-bridged metal complexes and molecular magnetic materials: “Pigment Berliner Blau” Saalebaer / CC0 (cropped)
- Titanium oxide: “Titanium(IV) oxide” The original uploader was Walkerma at English Wikipedia. / Public domain (cropped)
- Iron oxide and epsilon-type ferrite: “Ceramic magnets” Omegatron / CC BY-SA 3.0 (cropped)
- Single-molecule magnets with diverse functions: “The Rare Earth Elements and Their Spectra” Umop503 / CC0 (cropped)
- Related lab (磁気機能工学): “Nuclear magnetic resonance devices in CAFIA laboratory” Sarka Na kopci / CC BY-SA 4.0 (cropped)
- Related lab (陽電子消滅): “Testing AstroPix, A New Gamma-Ray Detector (SVS14809 - ASTEP Chips3)” NASA's Scientific Visualization Studio - University of Maryland College Park/Jeanette Kazmierczak, eMITS/Sophia Roberts, eMITS/Scott Wiessinger, Dan Violette, NASA/GSFC/Regina Caputo / Public domain (cropped)
- Related lab (物質科学理論研究室): “Siegenite crystal structure (Huang-Knop 1971) polyhedra model rotated 30c-30ab” Ra'ike (Wikipedia) / CC0 (cropped)
- Related lab (計算物質科学研究室): “Carbon nanotube (8,8) 3D spacefill” Jynto (talk) / CC0 (cropped)
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