Publications by authors named "Heh-Young Moon"
In this work, we demonstrate that ultrafast laser irradiation could selectively disrupt vascular endothelium of zebrafish embryos in vivo. Ultrafast lasers minimize the collateral damage in the vicinity of the laser focus and eventually reduce coagulation in the tissues. We have also found that the threshold fluence for lesion formation of the vascular endothelium strongly depends on the developmental stage of the embryos.
View Article and Find Full Text PDFWe have investigated the effect of the dynamics of crater size on the poly(dimethylsiloxane) (PDMS) surface morphology in fs-laser micro-processing. PDMS surface was processed with varying both inter-pulse interval and inter-spot distance between successive laser pulses. With keeping the interval of 5 ms crater shape is round even if the spot is overlapped in space.
View Article and Find Full Text PDFArticle Synopsis
- The study introduces a new laser 'rail-roading' scribing technique for patterning photovoltaic modules made of CIGS (Cu(In,Ga)Se2) on a Mo electrode, which relies on balancing material forces and laser-induced effects.
- By utilizing dual femtosecond laser beams with adjustable intervals, the method achieves efficient scribing while maintaining a clean Mo back contact surface.
- The research also explores how ambient gases and groove width impact scribing performance, focusing on the interplay of cohesion and adhesion forces within the CIGS layers and the Mo substrate.