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Energy Functional Materials Engineering Lab
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A lab that makes thin-film materials useful for energy conversion and energy saving.
AboutAbout the lab
From why functions emerge to new materials
The Yamada Lab studies inorganic materials useful for energy conversion and energy saving.
The lab fabricates materials as thin films and nanoscale structures, and examines and calculates them at the atomic and nano scales.
From this work, the lab investigates how functions arise, with the aim of creating materials and devices with new functions.
The lab is run jointly by the Thin Film and Nanostructure Group and the Surface Group.
Key terms
- Ferroelectric
- A material that has internal electric polarization even without an applied electric field, and whose polarization direction can be reversed by an electric field
- Piezoelectric effect
- The property of generating electricity when a material is pressed or bent, and conversely changing shape when electricity is applied
- Electro-optic effect
- A phenomenon in which applying an electric field changes a material's refractive index and thus how light travels through it
- Memristor
- A device whose resistance changes depending on the history of the electric current that has flowed through it, so that it retains its state
NewsLab news
A master's student won the top award and an excellence award at the M2 midterm review
A paper on the dielectric properties of BaTiO3 composite thin films was published in Adv. Electron. Mater.
A paper on the electro-optic effect of AlScN thin films was published in Adv. Electron. Mater.
A paper on the exfoliation and transfer process of PZT films was published in Small Struct.
A paper on the growth of defective wurtzite-type Al2S3 thin films was published in J. Ceram. Soc. Jpn.
ResearchResearch themes
The lab fabricates inorganic materials closely related to energy as thin films and nanostructures, and analyzes and calculates them at the atomic and nano scales to explore the mechanisms by which their functions emerge. The themes fall broadly into two: “energy conversion materials,” which convert energy from one form to another, and “energy-saving materials,” which reduce energy consumption.
*Illustrative imageMaterials that convert energy
Using ferroelectric thin films and nanostructures, the lab elucidates and controls the mechanisms of the piezoelectric effect, which converts force into electricity, and the electrocaloric effect, which converts between heat and electricity. The lab also works on energy harvesting with flexible ferroelectric thin films and on the electrostrictive properties of ion-conducting oxides.
*Illustrative imageMaterials for saving energy
The lab works on controlling and applying the electro-optic effect of ferroelectric thin films, and on developing electrical and optical memristors for brain-inspired computers. It is also controlling the memory characteristics of new ferroelectric thin films and developing new capacitor materials.
MembersFaculty
The members of the Yamada Lab consist of faculty, postdoctoral researchers, joint researchers, international joint researchers, students in the doctoral, master's, and undergraduate programs, administrative assistants, and technical assistants.As of 2026
- ProfessorTomoaki Yamada
- Assistant ProfessorShinya Kondo
- Project LecturerYUAN Xueyou
- Project Assistant ProfessorKosuke Ono
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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: “Thin film growth defect” Evavilova / CC BY-SA 4.0 (cropped)
- Materials that convert energy: “Energy Harvesting Assault Pack ( )” U.S. Army CERDEC / Public domain (cropped)
- Materials for saving energy: “Micro-chips wafer (25079)” Syced / CC0 (cropped)
- Related lab (Energy Quantum Materials Science Lab): “Transmission Electron Microscope” Juraj Kubica from Bratislava, Slovakia / CC BY-SA 2.0 (cropped)
- Related lab (Energy Nanomaterials Creation Lab): “View of equipment in Vacuum Laboratory, Sample Operations Area, LRL bldg 37 (S68-25204)” NASA Johnson Space Center / Public domain (cropped)
- Related lab (Nuclear Measurement Engineering Lab): “Experiment using an electronic neutron generator” Idaho National Laboratory / CC BY 2.0 (cropped)
- Related lab (Energy Nanomaterials Science Lab): “Metal-Organic Framework ( )” National Institute of Standards and Technology / Public domain (cropped)
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