Welcome to Hanada Lab.
Much attension has been paid to ultrashort pulsed laser (i.e., femtosecond laser) processing of various materials. The important feature of ultrafast laser processing is that it reduces heat diffusion to surrounding regions of the processed area, resulting in high-quality micro/nanofabrication of various materials. Another important aspect of ultrashort laser processing is nonlinear absorption (i.e., multiphoton absorption) that can induce strong absorption even inside transparent materials, resulting in 3D fabrication of the materials. Furthermore, the laser exceeds the diffraction limit to create laser-induecd periodc structures in nanoscale.
Using attractive features of ultrafast and conventional lasers , in our lab., we investigate
(1) 3D micro/nanofabrication of various transparent materials using femtosecond laser for bio-medical applicaitons such as µ-TAS and lab-on-a-chip
(2) apply the fabricated micro/nano platforms for observation and diagnosis of living cells and microorganisms.
(3) We also develop high-quality 2D/3D microfabrication of thermoset polymers using conventional laser-induced bubbles.
(4) Laser-induced periodic structures (LIPSS) fabrication on glass using Laser-induced plasma-assisted ablation (LIPAA)
(5) Evaluatetion of food using Raman spectroscopy with multivaridate analysis.