10 Result(s)

Article

3D porous metal structure manufacturing using UV pulsed laser and copper formate solution

This paper demonstrates a simple fabrication method of porous metal structures using liquid phase solution (copper formate solution) based on UV pulse laser deposition. This process can produce arbitrary metal...

Boseok Kang, Sungmoo Hong, Chanju Yoo, Dongbin You, Yong-Won Ma… in Applied Physics A (2018)

Article

Fabrication of a high-density nano-porous structure on polyimide by using ultraviolet laser irradiation

A new approach for fabricating a high-density nano-porous structure on polyimide (PI) by using a 355-nm UV laser is presented here. When PI was irradiated by using a laser, debris that had electrical conductiv...

Yong-Won Ma, Myung Yung Jeong, Sang-Mae Lee… in Journal of the Korean Physical Society (2016)

Article

Micronanofabrication for optofluidic sensors

This paper reviews optical waveguide Bragg grating sensors integrated with a microfluidic chip. Optical Bragg gratings are inscribed in optical fibers and optical planar waveguides comprised of core and claddi...

Sang-Mae Lee, Yong-Won Ma in Journal of the Korean Physical Society (2015)

Article

Fundamental study of direct microporous process using laser shock wave

In this paper, the mechanism of micropore structures generated inside PP (polypropylene) polymer due to thermal shock propagation caused by a pulsed laser was studied. When a thermal shock wave radiated to the...

Moon Suk Kang, Jong Soo Ko, Sang Mae Lee, Bo Sung Shin in Applied Physics B (2015)

Article

Fiber-optic hydrogen sensor based on polarization-diversity loop interferometer

In this study, we have demonstrated a fiber-optic hydrogen sensor using a polarization-diversity loop interferometer composed of a polarization beam splitter, two quarter-wave plates, and a polarization-mainta...

Youngho Kim, Tae Kyu Noh, Yong Wook Lee… in Journal of the Korean Physical Society (2013)

Article

The effect of a multistep deep-drawing process with circular and rectangular shapes on the deformation of AZ31 magnesium sheets

This study has mostly focused on the forming limit, microstructural change, and anisotropy that arise from rectangular and circular deep drawing of magnesium sheets. Moreover, this study predicts the change in...

Sang-Mae Lee, Chung-Gil Kang, Suk-Bong Kang in The International Journal of Advanced Manu… (2010)

Article

Evaluation of mechanical characteristics of the plate-type polymer hyperfine pit pattern by the nanoindentation process

It’s important to measure quantitative properties about the thermal-nano behavior of polymers in order to produce high quality components using the nanoimprint lithography process. Nanoscale indentation can be...

Eun-Kyung Lee, Chung-Gil Kang, Sang-Mae Lee in International Journal of Precision Enginee… (2010)

Article

Planar optical waveguide temperature sensor based on etched bragg gratings considering nonlinear thermo-optic effect

This paper demonstrates the development of optical temperature sensor based on the etched silica-based planar waveguide Bragg grating. Topics include design and fabrication of the etched planar waveguide Bragg...

Sang-Mae Lee, Kook-Chan Ahn, Jim S. Sirkis in KSME International Journal (2001)

Article

A radiographic study of dentigerous cysts

Sang Mae Lee, Moon Cheot Choi in Oral Radiology (1985)