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Nanostructure Analysis Lab
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A lab that uses electron microscopy to see the nanoscale structure of materials in three dimensions.
AboutAbout the lab
Seeing the nanoscale in 3D with electron microscopy.
The lab studies the relationship between the nanostructure and properties of materials by developing new observation and analysis methods using transmission electron microscopy (TEM).
The lab specializes in 4D imaging, which combines electron tomography, a method for visualizing nanostructures in three dimensions, with in situ observation of how materials behave during thermal reactions and deformation.
The materials it studies range widely, from metallic materials such as steels, aluminum alloys, and nickel alloys to superconducting materials and nanoparticles.
Students themselves operate the advanced electron microscopes at the Faculty of Engineering Sciences and the Ultramicroscopy Research Center, and learn observation and analysis techniques.
Key terms
- Transmission electron microscope (TEM)
- An instrument that passes an electron beam through a thinned specimen and uses the transmitted electrons to magnify the image down to the arrangement of atoms.
- Electron tomography
- A method that reconstructs the internal structure of a specimen in three dimensions from many images taken while tilting it little by little.
- In situ observation
- Directly observing under a microscope how a material changes while it is being heated or subjected to force.
NewsLab news
A paper by the professor and colleagues was published in Materials Characterization, reporting successful dynamic three-dimensional observation of dislocations
A student won the Student Excellent Presentation Award at the Kyushu Branch Scientific Meeting of the Japanese Society of Microscopy
A student received the Excellent Oral Presentation Award at ISMMM 2024
A paper from the lab was published in Shape Memory and Superelasticity
Professor Satoshi Hata and colleagues won the Excellent Poster Award at the 80th Annual Scientific Meeting of the Japanese Society of Microscopy
ResearchResearch themes
Centered on developing nanostructure analysis methods using electron microscopy, the lab works to understand the origins of function in structural and functional materials. Its work spans three-dimensional visualization, in situ observation under external fields, crystal orientation mapping, and structural analysis at the atomic scale.
*Illustrative imageSeeing Inside Materials in 3D
Electron tomography is a three-dimensional imaging method that solves the problem of structures overlapping in two-dimensional transmission electron microscope images. The lab visualizes dislocations, interfaces, and precipitates inside crystalline materials, including iron, in 3D, with the aim of clarifying the mechanisms of material deformation and microstructure formation.
*Illustrative imageTracking Changes in 3D as They Happen
The lab directly observes how a material's microstructure changes under external fields such as heating and deformation, and combines this with electron tomography to visualize the motion of nanostructures in three dimensions. It also develops specimen holders and reconstruction methods for this purpose, and works on applying deep learning.
*Illustrative imageMapping Crystal Orientation
A finely focused electron beam is scanned across the specimen, electron diffraction patterns are collected at many points, and these are compared with a computationally generated database to determine the crystal structure and orientation at each point. The target is nanoscale polycrystalline microstructures that are difficult to analyze with other methods.
*Illustrative imageReading Fluctuations in Atomic Arrangements
In crystals made of multiple elements, atoms and vacancies may be arranged regularly or randomly. The lab visualizes and analyzes fine ordered structures (nanoclusters) that do not appear in phase diagrams, and seeks to interpret the strength of metallic materials through their interaction with dislocations.
MembersFaculty
The lab's members consist of faculty, research support staff, secretaries, and doctoral, master's, and undergraduate students.
- ProfessorSatoshi Hata
- Assistant ProfessorYasuhito Kawahara
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: “Morpho helena wing detail” OKJaguar / CC BY-SA 4.0 (cropped)
- Seeing Inside Materials in 3D: “Jellyfish ( )” N i c o l a from Fiumicino (Rome), Italy / CC BY 2.0 (cropped)
- Tracking Changes in 3D as They Happen: “Chainfruit cholla buds opening IMGP )” SaguaroNPS / Public domain (cropped)
- Mapping Crystal Orientation: “Precision Farming in Minnesota - Natural Colour” NASA Earth Observatory, Jesse Allen / Public domain (cropped)
- Reading Fluctuations in Atomic Arrangements: “Pomegranate (opened)” Ivar Leidus / CC BY-SA 4.0 (cropped)
- Related lab (結晶
物性工学研究室): “Diamagnetic graphite levitation” en:User:Splarka / Public domain (cropped) - Related lab (機能無機材料工学研究室): “Ceramic monoliths” S. Govender, H. Friedrich / CC BY-SA 4.0 (cropped)
- Related lab (構造材料物性学研究室): “Scanning electron microscope - UFCH JH (2020) 03” Tadeáš Bednarz / CC BY-SA 4.0 (cropped)
- Related lab (ナノ材料・デバイス科学研究室): “Transmission electron microscope (Morgagni 268D) 4pl” Pleple2000 / CC BY-SA 3.0 (cropped)
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