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Energy Materials Design Lab
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The lab uncovers the strength and failure mechanisms of tiny materials invisible to the naked eye.
AboutAbout the lab
Understanding the strength and failure of nanoscale materials.
The Energy Materials Design Lab studies the strength and failure mechanisms of nano- and micro-sized materials and structures.
When materials shrink to nano- to micro-scale dimensions, they show properties different from those of large materials.
The lab conducts experiments that apply loads to materials inside various microscopes, and investigates them together with mechanical and theoretical analysis.
It also works on the relationship between the ferroelectricity or magnetism of nanomaterials and their deformation, and on the design of mechanical metamaterials.
Key terms
- Fatigue
- A phenomenon in which repeated loading gradually accumulates damage in a material until it eventually fails.
- Metamaterial
- A material given properties not found in natural substances by creating artificial structures inside it.
- Singular stress field
- A region, such as at a crack tip, where the force (stress) becomes infinitely large in theory.
NewsLab news
Material design that suppresses fatigue accumulation: nanostructuring produces lightweight metals that resist fracture
A master's student received the Outstanding Student Presentation Award from the Multiscale Materials Mechanics Division Committee of the Society of Materials Science, Japan
A master's student received the Young Researcher Outstanding Presentation Award from the Micro-Nano Engineering Division of the Japan Society of Mechanical Engineers
ResearchResearch themes
The lab applies loads to nano- to micro-sized structures inside microscopes such as transmission electron microscopes, and studies their strength, failure mechanisms, and mechanical properties. It also studies the link between physical properties and deformation in nanostructures, as well as mechanical metamaterials.
*Illustrative imageFatigue of nano- and micro-scale metals
Inside small metals, the structures that normally become the origin of fatigue cracks in ordinary metals do not form. Using in situ fatigue testing inside an electron microscope, the lab uncovers the fatigue behavior specific to nano- and micro-scale materials.
*Illustrative imageLinking physical properties and deformation
Focusing on ferroelectricity, magnetism, the Mott transition, and related properties, the lab studies how nanoscale materials respond when force is applied. It uses piezoresponse force microscopy and magnetic force microscopy together with loading devices it developed itself.
Mechanical metamaterials
The lab designs metamaterials that show distinctive mechanical properties, fabricates them with a 3D printer, and examines how they deform and fail through experiments and analysis.
*Illustrative imageHow materials fail at the nanoscale
When a material is nanometer-sized, the singular stress field at a crack tip contains only a few dozen atoms. The lab succeeded for the first time in the world in conducting fracture experiments starting from atomic-scale defects, and revealed fracture at the atomic scale.
MembersFaculty
The members of the Energy Materials Design Lab consist of faculty, doctoral students, master's students, and fourth-year undergraduates.
- ProfessorTakashi Sumigawa
- Associate ProfessorMasataka Abe
- LecturerEmi Kawai
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: “Typical reversed fatigue stress cycles” Yapparina / CC BY-SA 3.0 (cropped)
- Fatigue of nano- and micro-scale metals: “Dislocations ecrouissage arbre de la foret” Cdang / CC BY-SA 4.0 (cropped)
- Linking physical properties and deformation: “The Deformation of the Space modifies the Measure” Mattia Luigi Nappi / CC BY-SA 4.0 (cropped)
- How materials fail at the nanoscale: “Wingtipmicrocrack” Ali S. Argon / Public domain (cropped)
- Related lab (Functional Systems Design Lab): “Nondestructive inspection, Finding the cracks 130806-F-JF989-080” Senior Airman Benjamin Stratton / Public domain (cropped)
- Related lab (Fundamental Energy Application Science Lab): “V3GaWire” Materialscientist / CC BY-SA 3.0 (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)
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