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Nanoelectronics Lab
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A lab aiming for new optical devices using plasmonics and metamaterials.
AboutAbout the lab
Aiming for new optical devices by using nanostructures
Takahara Lab (Nelph) studies the physics and applications of photonic devices, including plasmonics, which is metal-based nanophotonics, and metamaterials, which are artificial optical media.
Recently, the lab has focused on metasurfaces, which are two-dimensional metamaterials, especially dielectric metasurfaces made of silicon.
In applied research, working jointly with companies, the lab has realized high-resolution color generation, all-optical switches, and radiative cooling devices.
The lab operates the Photonics Center, which provides an environment for creating innovation through the use of shared equipment and exchanges with members from other fields.
Key terms
- Metamaterial
- An artificial optical medium made by arranging many nanostructured resonators (meta-atoms)
- Metasurface
- A two-dimensional metamaterial. It is also called a "meta-surface"
- Plasmonics
- Nanophotonics using metals. It deals with light waves at the interface between a metal and a dielectric
NewsLab news
A student won the OSJ/SPIE Student Award at OPJ2025
A review article won the Laser Society of Japan Paper Award (Review category)
Wrote a chapter in the book "Possibilities for Practical Applications of Metamaterials/Metasurfaces" (in Japanese)
ResearchResearch themes
Takahara Lab (Nelph) studies the physics and applications of photonic devices, including plasmonics, which is metal-based nanophotonics, and metamaterials, which are artificial optical media. The lab aims to create innovative photonic devices using nanostructures made of negative-permittivity materials and high-refractive-index dielectrics.
*Illustrative imageMetamaterials and metasurfaces
A metamaterial is an artificial optical medium made by arranging many nanostructured resonators (meta-atoms), and a two-dimensional one is called a metasurface. The lab builds meta-atoms from silicon and studies structural color, perfect absorbers, selective radiative emitters, and their applications.
*Illustrative imagePlasmonics
The lab studies the physics of low-dimensional light waves that exist at the interface between a negative-permittivity material and a dielectric, and their application to optical devices. Low-dimensional light waves can carry nanometer-scale optical beams beyond the diffraction limit, and are expected to be applied to nano-optical integrated circuits.
*Illustrative imageControl of thermal radiation
This research uses microcavity array structures artificially formed on a material's surface to control the spectrum and polarization of thermal radiation regardless of the material. Applications are expected in narrowband thermal radiation sources and high-efficiency incandescent lamps.
MembersFaculty
The members of Takahara Lab (Nelph) are faculty, visiting research students, doctoral, master's, and undergraduate students, and a secretary.
- ProfessorJunichi Takahara
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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: “Metamaterial” Nalaf / CC BY-SA 4.0 (cropped)
- Metamaterials and metasurfaces: “Terahertz freq. metamaterial modulator” Hou-Tong Chen (Los Alamos National Laboratory) / Public domain (cropped)
- Plasmonics: “Diffraction of plane wave from plasmonic slit” Myxomatosis57 / CC BY 4.0 (cropped)
- Control of thermal radiation: “Flir E8-Thermal imaging camera-Thermographic camera-02ASD” Asurnipal / CC BY-SA 4.0 (cropped)
- Related lab (Ultraprecision Machining Lab): “Optician Polishing Large CXO Mirror Shell At HDOS (illustrations-mirrorFab-Optician Polishing Large CXO Mirror Shell At HDOS - 1-300)” NASA/SAO / Public domain (cropped)
- Related lab (Structural Organic Chemistry Lab): “Chemistry Experiment 3D” TeWeBs / CC BY-SA 4.0 (cropped)
- Related lab (Nanospectroscopy Lab): “Optical cell rotator” Katzeimsack72 / Public domain (cropped)
- Related lab (Nano-Biophotonics Lab [Graduate School of Frontier Biosciences]): “Gold Nanoparticles” Tae Joon Cho Sherrie Elzey Vincent A. Hackley Stephen (San-Min) Lee Robert I. MacCuspie Julian Taurozzi De-Hao Tsai / Public domain (cropped)
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