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Fundamental Energy Application Science Lab
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The lab makes everything from superconducting wires to semiconductors using crystal and thin-film technology.
AboutAbout the lab
Energy materials from crystals and thin films
The Fundamental Energy Application Science Lab (Doi Lab) is the lab of Professor Doi and Associate Professor Ikenoue.
The lab works on high-temperature superconducting wires, superconducting wires for MRI, thin-film all-solid-state batteries, semiconductor thin films made by mist CVD, and radiation detectors.
Drawing on crystal growth and thin-film technology, the lab creates materials for transmitting, storing, and using energy.
Undergraduate students can be assigned to the lab from either the Department of Physical Science and Engineering or the Department of Electrical and Electronic Engineering in the Faculty of Engineering.
Key terms
- Superconductivity
- A phenomenon in which electrical resistance drops to zero when a material is cooled below a certain temperature.
- Mist CVD
- A method in which a source solution is turned into a mist, carried to a substrate, and reacted there to form a film. It can be done at atmospheric pressure.
- All-solid-state battery
- A battery that uses a solid electrolyte instead of a liquid electrolyte. It is highly safe.
NewsLab news
Paper by Professor Doi et al. published in ECS Journal of Solid State Science and Technology
Associate Professor Takumi Ikenoue received the Research Encouragement Award at the 17th Nanostructures and Epitaxial Growth Lecture Meeting
Paper by Professor Doi et al. published in Journal of the Ceramic Society of Japan
Paper by Professor Doi et al. published in Journal of The Electrochemical Society
ResearchResearch themes
The lab studies energy materials that draw on crystal growth and thin-film technology, including high-temperature superconducting wires, all-solid-state batteries, semiconductor thin films made by mist CVD, and radiation detectors.
*Illustrative imageSilver-free high-temperature superconducting wires
The lab aims to put power cables into practical use with a high-temperature superconductor (YBCO) whose crystals are aligned in the same orientation. It is studying REBCO wires that need no silver by using a conductive intermediate layer, and is also examining the formation of YBCO films by mist CVD.
*Illustrative imageSuperconducting wires for next-generation MRI
To put into practical use MRI systems that run on cryocoolers without liquid helium, the lab studies wires made of the MgB₂ superconductor.
*Illustrative imageAll-solid-state batteries made of thin films
Using thin-film technology, the lab studies materials and processes for all-solid-state batteries that combine safety with high energy density. It investigates films such as lithium-ion battery cathode films grown at low temperature.
*Illustrative imageMaking power semiconductor films with mist
Using mist CVD, the lab grows thin films of ultra-wide-bandgap semiconductors, aiming at application to high-breakdown-voltage power devices. It grows nickel oxide films with aligned crystal orientation on gallium oxide substrates.
MembersFaculty
The members of the Fundamental Energy Application Science Lab consist of faculty, doctoral students, master's students, and fourth-year undergraduates.
- ProfessorToshiya Doi
- Associate ProfessorTakumi Ikenoue
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: “V3GaWire” Materialscientist / CC BY-SA 3.0 (cropped)
- Silver-free high-temperature superconducting wires: “Bisco2223tape” Materialscientist (talk) / CC BY-SA 3.0 (cropped)
- Superconducting wires for next-generation MRI: “Siemens Magnetom Aera MRI scanner” Ptrump16 / CC BY-SA 4.0 (cropped)
- All-solid-state batteries made of thin films: “Lithium-Ion Cell cylindric” RudolfSimon / CC BY-SA 3.0 (cropped)
- Making power semiconductor films with mist: “Dr Thaddeus (Tadj) Asel focuses on the growth of oxide semiconductor materials such as Gallium Oxide to address the need for smaller and higher power electronics (8380318)” U.S. Air Force AFRL by Keith C Lewis / Public domain (cropped)
- Related lab (Energy Chemistry Lab): “Lithium Iron Phosphate LiFePO4 Cells 400 Ah Amp Hours 3.25 Volts - 4” Yo-Co-Man / CC BY-SA 4.0 (cropped)
- Related lab (Advanced Materials Physics Lab): “Scanning tunneling microscope-MHS 2237-IMG 3819” Rama / CC BY-SA 3.0 fr (cropped)
- Related lab (Crystal Physics and Engineering Lab): “Plastic Stress Versus Strain” Mikeviti6 / CC BY-SA 4.0 (cropped)
- Related lab (Functional Systems Design Lab): “Nondestructive inspection, Finding the cracks 130806-F-JF989-080” Senior Airman Benjamin Stratton / Public domain (cropped)
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