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Nakagawa Lab
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The lab takes on extreme microfabrication at the single-digit nanometer scale.
AboutAbout the lab
Controlling interfacial functional molecules for extreme nanofabrication.
The Nakagawa Lab studies the precise molecular-level design and control of interfaces between organic polymers and metals or inorganic substances.
The lab creates new photofunctional materials and proposes light-based microfabrication methods, aiming to fabricate electronic and optical devices.
Nanoimprint technology is the core of its microfabrication, allowing both fine pattern resolution and a large processable area to be achieved together over a wide range.
The lab develops new materials and processes for photo-nanoimprint, which is attracting attention as a next-generation mass-production technology.
Key terms
- Nanoimprint
- A fabrication method that presses a mold into resin to transfer fine nanometer-scale patterns
- Control of interfacial functional molecules
- Using thin molecular films to control the wetting, friction, adhesion, and reactivity of material surfaces
- Moiré fringes
- Large striped patterns that appear when patterns with slightly different periods overlap
NewsLab news
A master's student received an Excellent Presentation Award at the Nanoimprint Technology Research Meeting
A master's student received the HOYA Best Academic Poster Award at Photo Mask Japan 2026
Paper co-authored by Associate Professor Oshikiri published in Nano Letters
Paper co-authored by Associate Professor Oshikiri published in ACS Photonics
Research results by Associate Professor Oshikiri and a graduate of the lab published in Optics Continuum
ResearchResearch themes
The lab precisely designs and controls, at the molecular level, the functions of interfaces between organic polymers and metals or inorganic substances. From this, it proposes soft nanomaterials in the form of new polymer thin films, along with microfabrication methods for them, aiming to fabricate electronic and optical devices from the single-nanometer to the micrometer range.
*Illustrative imagePrint and Imprint Method
This is a method proposed originally by the lab that combines laser-processed stencil printing with photo-nanoimprint molding. Laser drilling of polymer thin films and stencil printing have made it possible to deposit highly viscous photocurable liquids selectively at targeted locations.
*Illustrative imageFluorescence Moiré Alignment Method
The lab has developed photocurable liquids containing fluorescent dyes to make the photo-nanoimprint process visible. By measuring the moiré fringes that appear when grating patterns with different periods are overlaid, it has shown that submicron alignment is possible under a fluorescence microscope.
*Illustrative imageScience of Single-Digit Nanofabrication
The lab aims to create structures of single-digit nanometers by photo-nanoimprint based on the control of interfacial functional molecules. It has shown that at this size, a molecular liquid interacts with the solid surface, its viscosity rises, and the motion of polymer chains is restricted.
MembersFaculty
Members of the Nakagawa Lab include faculty, doctoral, master's, and undergraduate students, and technical staff.As of 2026
- ProfessorMasaru Nakagawa
- Associate ProfessorTomoya Oshikiri
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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: “Nanoart Desert Rose” Яна Сычикова / CC BY 4.0 (cropped)
- Print and Imprint Method: “Nanoimprint mold of a diffractive lens” Alexander Koshelev / CC BY-SA 4.0 (cropped)
- Fluorescence Moiré Alignment Method: “Newton rings” Ulfbastel / Public domain (cropped)
- Science of Single-Digit Nanofabrication: “150ºC” Felix Trier and Adam Andersen Læssøe / CC BY-SA 4.0 (cropped)
- Related lab (Akutagawa Lab): “Fingerprint texture of a liquid crystal resembling Van Gogh's style” Wojciech Tomczyk / CC BY 4.0 (cropped)
- Related lab (Mitsuishi Lab): “Electrohydrodynamic instability patterning in a thin polymer film. 500x magnification reflected light” Claire Trease, Kingston University / CC BY-SA 4.0 (cropped)
- Related lab (Yoshioka Lab): “FLAKES” TOP PLASTIC / CC BY-SA 4.0 (cropped)
- Related lab (Oi Lab): “Hoveyda-Grubbs-catalyst-1st-gen 3D-balls” Diogo Duarte / CC BY-SA 3.0 (cropped)
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