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Matsui Lab
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The lab uses nanoscale light technology to measure biological information and to protect the body from heat.
AboutAbout the lab
Technology to protect the lives of people and society
The Matsui Lab studies nanoscale optical technologies such as surface plasmons and surface phonons.
Using these technologies, the lab aims to develop sensors that optically measure biomolecular reactions and exhaled breath gases, as well as techniques that make strain visible through light.
The lab aims at a wide range of applications, from biotechnology to thermal energy, including materials that protect the body from heat and electromagnetic waves and heat control for window glass.
The lab also pursues joint research with the National Institute of Advanced Industrial Science and Technology (AIST), other universities, and companies.
Key terms
- Surface plasmon
- A phenomenon in which a collective oscillation of electrons at a material's surface couples with light. Light is intensified very close to the surface.
- Surface phonon
- A vibration of the atomic arrangement at a crystal surface that is coupled with infrared light. Optical loss is small.
- SEIRA
- Surface-enhanced infrared absorption spectroscopy. A method that uses nanostructures to intensify infrared light and measure the vibrations of very small numbers of molecules.
NewsLab news
Paper on biosensing using multi-wavelength resonant SEIRA accepted by Sensors and Actuators B: Chemical
Research on light and heat control for Low-E glass windows published in the book "xEV Thermal Management Technology"
Collaborative research on biosensing with near-infrared photonic structures published in Advanced Optical Materials
Paper on biosensing using surface phonons of hydroxyapatite accepted by ACS Appl. Mater. Interfaces
Paper on structural design for Low-E glass windows published in ACS Appl. Opt. Mater.
ResearchResearch themes
Using localized nano-optical technologies such as surface plasmons and surface phonons, the lab studies sensing that measures information on biomolecules, technologies that protect the body, and the control of thermal energy. Based on spectroscopic measurement across a wide band from visible to infrared light, it works on everything from materials fabrication to the development of measurement methods.
*Illustrative imageMeasuring biomolecules with infrared surface plasmons
The lab was the first to demonstrate biosensing that measures biomolecular reactions in real time by generating near-infrared surface plasmons in a thin film of zinc oxide, a material that is compatible with the body. It is now advancing SEIRA technology that can distinguish molecules.
*Illustrative imageTurning stress into light with bioceramics
The lab is pioneering a new technology that gives inorganic bioceramics optical functions so that stress can be seen as an image of light. Focusing on mechanoluminescent materials, it aims to directly visualize stress, friction, and wear that occur inside the body.
*Illustrative imageTransparent films that block heat
The lab aims to develop glass windows whose ability to block solar heat and radiant heat can be adjusted by electrically controlling the surface plasmons of oxide semiconductor nanoparticles. It is creating new thermal control materials that lead to energy savings.
*Illustrative imageMeasuring biomolecules with infrared surface phonons
The lab was the first to succeed in generating surface phonons on the surface of biomaterials such as hydroxyapatite. Taking advantage of the sharp resonance with small optical loss, it is pioneering new SEIRA technology.
MembersFaculty
- Associate ProfessorHiroaki MatsuiPublications ↗
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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: “Nanoscale Plasmonic Resonator Structures ( )” National Institute of Standards and Technology / Public domain (cropped)
- Measuring biomolecules with infrared surface plasmons: “Metasurface ( )” National Institute of Standards and Technology / Public domain (cropped)
- Turning stress into light with bioceramics: “Phosphorescent” Splarka at English Wikipedia / Public domain (cropped)
- Transparent films that block heat: “Sunrise reflected in a glass facade, Quebec City” Wilfredor / CC0 (cropped)
- Measuring biomolecules with infrared surface phonons: “Hydroxylapatite-338779” Robert M. Lavinsky / CC BY-SA 3.0 (cropped)
- Related lab (Tanemura Lab): “"Lines made with light" - diffraction gratings at the UK ATC ( )” Science and Technology Facilities Council / CC BY-SA 2.0 (cropped)
- Related lab (Ozeki Lab): “Ti Sapph YAG supercontinnum” Neath g / CC BY-SA 4.0 (cropped)
- Related lab (Yamashita-Set Lab): “Зеркало резонатора волоконного лазера в темноте (Resonator mirror of Er ZBLAN fiber laser and its working fiber in the dark)” Hius1 / CC BY 4.0 (cropped)
- Related lab (Takenaka Lab): “Silicon Photonics 300mm wafer” Ehsanshahoseini / CC BY-SA 4.0 (cropped)
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