Research
Research
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Hyperspectral microscopic characterization of materials and photonic devices
- Construction of hyperspectral imaging microscopes (HIM)
Development of point scanning type (spatial scan) and full-field scanning type (spectral scan) hyperspectral systems combined with imaging microscopes.
- Hyperspectral microscopic characterization of materials
Study of microscopic characteristics of nanostructured materials and photonic devices using hyperspectral imaging microscopes. Recently, our study for the green-gap problem of LED materials has been published (right image).
Ultrasensitive hyperspectral biosensing platforms
- Hyperspectral imaging type plasmonic biosensing
Dark-field spectral imaging microscope for LSPR biosensing technique enables us to monitor the scattering spectra of individual Au nanorods, and to detect ~pM OTA, a mycotoxin related to carcinogenic illness (left upper image).
- Ultrasensitive and stable plasmonic SERS substrates covered with 2-dimensional monolayers
SERS substrates of Ag nanoparticles (NPs) covered with graphene and hexagonal boron nitride remain stable over 80 days, and sandwich structures of Au NPs/2D layer/Ag NPs show detection limit as low as ~pM for R6G molecules (enhancement factor ~108, left lower image).
- Fabrication of array type plasmonic nanostructures
Point-of-care testing (POCT) diagnostic instruments for foods and agriculture
- POCT biosensing instruments for toxic molecules detection in foods
- POCT spectrometer for plant diagnosis
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