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Nanomaterials Optical Measurement Lab
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A lab that uses optical nanomaterials to develop methods for measuring the nanoscale world.
AboutAbout the lab
New measurement methods with optical nanomaterials
The Nanomaterials Optical Measurement Lab (Uji-i Lab) develops new measurement methods using next-generation optical nanomaterials.
Its main research includes synthesizing nanomaterials with optical functions, controlling chemical reactions using strong coupling, drug transport systems (drug delivery systems), and developing Raman measurement methods for probing the inside of a single cell.
The lab explores applications of "surface plasmons," in which light and electrons oscillate together on the surface of metal nanostructures, from the standpoints of photochemistry and photophysics.
Key terms
- Surface plasmon
- A phenomenon in which light and electrons oscillate together on the surface of a metal nanostructure. It can confine light to a very small area
- Raman scattering
- A phenomenon in which light shone on a substance is scattered with its wavelength slightly shifted by molecular vibrations. It is used to identify molecules
- Drug transport system
- A mechanism that delivers a drug to the needed place in the body in the needed amount. Also known as a drug delivery system (DDS)
ResearchResearch themes
The lab explores the possibilities and practicality of applying plasmonics research from the standpoints of photochemistry and photophysics. It is working on developing new measurement methods using next-generation optical nanomaterials.
*Illustrative imageGuiding light with plasmons
Using plasmons that propagate along the surface of silver nanowires, light can be guided through structures narrower than the diffraction limit of light. The lab studies measurements that use this property to enhance Raman scattering at a remote location, and tip-enhanced Raman microscopy, which uses a sharp probe tip to measure at a scale finer than 10 nanometers.
*Illustrative imageSpectroscopy that sees a single molecule
The lab uses a single molecule as a nanometer-sized marker and investigates the surrounding nanoscale environment from the way it emits light. It observes metal nanostructures with super-resolution microscopy and uses fluorescence to observe the rotation of molecules fixed on a surface.
*Illustrative imageDrug transport using plasmons
The lab studies how interactions with the plasmons of metal nanoparticles change the generation of singlet oxygen, which acts in photodynamic therapy for cancer. It aims to realize a drug transport system that releases the drug by plasmonic heating and prevents the drug from leaking out.
MembersFaculty
The members of the Nanomaterials Optical Measurement Lab consist of faculty and doctoral, master's, and undergraduate students.As of 2025
- ProfessorHiroshi Uji-i
- Associate ProfessorKenji Hirai
- Assistant ProfessorTheemaitree Phasai
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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: “Gold25nm” Aleksandar Kondinski / CC BY-SA 4.0 (cropped)
- Guiding light with plasmons: “Silver Nanowires” Maido Merisalu / CC BY-SA 4.0 (cropped)
- Spectroscopy that sees a single molecule: “Close-up of the objective lenses of a microscope” Shixart1985 / CC BY 2.0 (cropped)
- Drug transport using plasmons: “Targeted Nanogel Delivery for Cancer Treatment” Mes14ncsu / CC BY-SA 4.0 (cropped)
- Related lab (Nanoelectronics Lab): “Scanning tunneling microscope (STM) 250 nm by 250 nm image of one-atom-thick silver islands grown on palladium (111) surface” Ponor / CC BY-SA 4.0 (cropped)
- Related lab (Cell Bioengineering Lab): “Fibroblastid (BPAE)” Heiti Paves / CC BY-SA 3.0 (cropped)
- Related lab (Information and Communication Photonics Lab): “Red optical fibers” Tyler Nienhouse / CC BY 2.0 (cropped)
- Related lab (Neural Control Engineering Lab): “Auditory Cortex Frequency Mapping” Chittka L, Brockmann / CC BY-SA 2.5 (cropped)
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