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Metallic Micro/Nano Materials Strength Lab (Toshiyuki Kondo)
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A lab that studies the strength of minute materials such as thin metal films.
AboutAbout the lab
Experimentally uncovering the strength of minute metals.
The Metallic Micro/Nano Materials Strength Lab mainly studies metal thin films, with the aim of clarifying the strength of minute metallic materials.
The lab evaluates strength experimentally through tensile tests that pull on thin films, fatigue tests that apply repeated loading, and creep tests that apply a sustained load.
The lab's website introduces it under the name "Solid Mechanics Lab," together with Professor Shigeru Hamada.
The website states that its ultimate goal is to make mechanical structures operate "safely."
Key terms
- Fatigue
- A phenomenon in which damage forms and grows as a material is repeatedly loaded, causing it to fail even under small forces that would not break it in a single application.
- Creep
- A phenomenon in which a material slowly deforms over time when a constant load is applied continuously.
- Grain
- A small particle in a metal in which atoms are arranged in a regular pattern. The boundaries between grains are called grain boundaries.
NewsLab news
A master's student received the 3rd Best Poster Award at ECF25
A doctoral student received the Graduate Student Research Encouragement Award from the Society of Automotive Engineers of Japan
An undergraduate student received the Excellent Presentation Award at the undergraduate thesis presentation meeting of the Kyushu Branch of the Japan Society of Mechanical Engineers
A master's student received the Young Researcher Award from the Kyushu Branch of the Society of Materials Science, Japan
A doctoral student received the Women's Future Award from the Japan Society of Mechanical Engineers
ResearchResearch themes
With the aim of clarifying the strength of minute metallic materials, the lab mainly targets metal thin films and conducts experimental evaluation of tensile, fatigue, and creep behavior. It also investigates how film thickness and grain size affect strength and deformation.
*Illustrative imageFatigue Fracture of Copper Thin Films
The lab conducts fundamental research on fatigue fracture, failure caused by repeated loading, in free-standing copper thin films.
*Illustrative imageEffects of Film Thickness and Grain Size
The lab fabricates free-standing copper thin films in which thickness and grain size are varied independently, and examines their effects on how easily the films deform. A paper by Associate Professor Toshiyuki Kondo and colleagues reports that when the thickness drops to about 40 nm, grain boundaries shift from strengthening the material to weakening it.
MembersFaculty
The Solid Mechanics Lab consists of faculty members, technical officers, administrative assistants, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorShigeru Hamada
- Associate ProfessorToshiyuki Kondo
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: “Thin film solar on standing seam metal roof” Architectsea / CC BY-SA 3.0 (cropped)
- Fatigue Fracture of Copper Thin Films: “Copper oxide thin-film interference” Infinirivative / CC BY 4.0 (cropped)
- Effects of Film Thickness and Grain Size: “Primaerzementit” Eisenbeisser / CC BY-SA 3.0 (cropped)
- Related lab (Strength of Metallic Micro- and Nanomaterials Lab): “Cu-Scheibe” Alchemist-hp (pse-mendelejew.de) / CC BY-SA 3.0 de (cropped)
- Related lab (Hydrogen Embrittlement of Metallic Materials Lab): “Liquid hydrogen storage tank at Launch Pad 39B” TomFawls / CC BY-SA 3.0 (cropped)
- Related lab (Hydrogen-Compatible Materials and Hydrogen Embrittlement Prevention Lab): “CERAMIC CREEP TEST FIGURES AND SECTIONS - NARA - 17444514” Martin Brown / Public domain (cropped)
- Related lab (Metal Fatigue and Fracture Mechanics Lab): “CR510 steel bridge 1922” Michigan State Highway Department / Public domain (cropped)
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