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Optical Microfabrication Lab
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The lab studies ultra-high-resolution 3D printing with laser light to build microscopic three-dimensional structures.
AboutAbout the lab
Freely fabricating microscopic 3D structures with light
The Optical Microfabrication Lab develops ultra-high-resolution 3D printing using laser light (microstereolithography) and studies how to build microscopic three-dimensional structures.
Using photocurable resin, which changes from liquid to solid when irradiated with laser light, the lab has technology to fabricate structures from the submicron to the submillimeter scale.
The lab also advances application research, such as light-driven micropumps and bioceramic structures for regenerative medicine of bone and teeth.
On the lab's website, it is introduced under the name "Maruo Lab".
Key terms
- Photocurable resin
- A resin that changes from liquid to solid when irradiated with laser light; it is the material used in stereolithography
- Two-photon microstereolithography
- A 3D printing technology that solidifies photocurable resin with an ultrashort-pulse laser to build microscopic three-dimensional structures
- Optical tweezers
- A technology that uses the force of laser light to trap and move microscopic objects
NewsLab news
A co-authored paper with the Iijima (Kazutoshi) Lab was published in ACS Biomaterials Science & Engineering
A student received the Best Research Presentation Award and the Excellent Research Presentation Award at the ROUTE research results presentation meeting
A student received the Young Researcher Excellent Lecture Award and the Young Researcher Excellent Lecture Fellow Award at the 15th Symposium on Micro and Nano Engineering
A review article by Professor Maruo was published in Nature Reviews Methods Primers
A joint research paper with the Ueno Lab was published in Nanomaterials
ResearchResearch themes
The lab works on developing technology that builds microscopic three-dimensional structures through ultra-high-resolution 3D printing with laser light. It also conducts application research in medicine, micromachines, photonics, and other fields.
*Illustrative imageTwo-photon microstereolithography
A 3D printing technology that solidifies photocurable resin with an ultrashort-pulse laser to freely build microscopic three-dimensional structures. The lab developed its own system capable of fabricating with a processing line width of 0.1 µm, and studies applications in medicine, micromachines, and photonics.
*Illustrative imageOne-photon microstereolithography
A 3D printing technology that solidifies photocurable resin with a blue or ultraviolet laser to build three-dimensional structures from the µm to the cm scale. Mixing in ceramic microparticles makes it possible to produce ceramic parts, and a method called photoreduction can build metal three-dimensional structures.
*Illustrative imageMulti-material stereolithography
The lab is developing methods to build a 3D model in one piece from multiple materials. It built a system that places photocurable resins with different properties on a glass substrate like paints on a palette and swaps between them during fabrication.
*Illustrative imageLight-driven micromachines
Using two-photon microstereolithography, the lab makes micromachines about the size of a red blood cell and moves them in liquid by focusing laser light. Combined with optical tweezers, this makes it possible to build light-driven micropumps and light-controlled manipulators.
MembersFaculty
The members of the Optical Microfabrication Lab consist of faculty members and doctoral, master's, and undergraduate students.As of 2026
- ProfessorShoji Maruo
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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: “Stereolithography cycloidal drive” Clemenspool / CC BY-SA 3.0 (cropped)
- Two-photon microstereolithography: “Dry etching test strucutres” Mgerlt / CC BY 4.0 (cropped)
- One-photon microstereolithography: “Mammoth Stereolithography” Materialise NV / CC BY-SA 3.0 (cropped)
- Multi-material stereolithography: “Imprimante 3D” Adoscam / CC BY-SA 4.0 (cropped)
- Light-driven micromachines: “Colias micro-robot” Farshadarvin / CC BY-SA 4.0 (cropped)
- Related lab (流体力学研究室): “Micrograph of magnetic microfluidic chip ( )” National Institute of Standards and Technology / Public domain (cropped)
- Related lab
(動的材料デザイン研究室): “Water droplets in a lotus leaf1” Aathavan jaffna / CC BY-SA 3.0 (cropped) - Related lab (数理モデリング研究室): “Finite element sparse matrix” Oleg Alexandrov / Public domain (cropped)
- Related lab (応用固体力学研究室): “Friction-Driven Encoder Test (encoder 04-CC)” International Gemini Observatory/NOIRLab/NSF/AURA / CC BY 4.0 (cropped)
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