top of page

Research Topics

Optical Nanomaterials

Nanometric Manipulation of mesoscopic objects

As technology advances, we have gained the ability to manipulate the world around us at the atomic level. Leading this revolution are optical tweezers, a state-of-the-art technology that allows us to precisely and accurately trap and move minuscule objects. By employing a highly focused optical field, we can manipulate atoms, nanoparticles, DNA, and cells in three-dimensional space without any direct physical contact. We are dedicated to developing two-dimensional optical trapping systems, aiming to explore unique phenomena and establish new fields of study using these systems.

Raman spectroscopy of two-dimensional materials and biological samples.

Harnessing the power of cutting-edge technology, we have pioneered the development of a combined Raman spectroscopy and optical tweezer system. This innovative approach allows for the measurement of Raman scattering in two-dimensional materials and biological samples, such as exosomes and cells. By overcoming the diffraction limit through the near-field of trapped plasmonic nanoparticles, our system achieves high spatial resolution and significantly enhances Raman intensities compared to conventional Raman spectroscopy.

Optical printing of plasmonic nanoparticles

We push the limits of printing precision caused by the diffraction limit through the development of multi-wavelength optical tweezer systems. Optical printing of trapped plasmonic nanoparticles can be achieved by pushing the trapped nanoparticles to the substrates. We strive to enhance the printing precision to create unique and novel nanostructures and nanodevices with desired functions.

Colorimetric gas sensors array

Elegantly replicating the remarkable capabilities of the human olfactory system, which can distinguish and identify thousands of distinct odors through hundreds of olfactory receptors, we have developed a colorimetric gas sensor array. This array consists of dyes that alter color upon reacting with gases and nanoporous materials that immobilize the dyes. Additionally, we are conducting research on the development of nanomaterials to enhance gas reactivity and efficient data processing methods.

Other Topics


Upconversion Materials


Bioanalytical Platforms

DNA eng.png

DNA Nanomaterials

bottom of page