Dr. Won Seok Chang Profile

Dr. Won Seok Chang

at Korea Institute of Machinery and Materials

SPIE Involvement:

Author

Publications (9)

Proceedings Article | 20 June 2024 Poster + Paper

Advancing micro/nanoscale high-resolution digital patterning: a combined with two-photon polymerization (TPP) and digital micro mirror device (DMD)

Hyunmin Cho, Won-Sup Lee, Won Seok Chang

Proceedings Volume 13005, 130050Y (2024) https://doi.org/10.1117/12.3022025

KEYWORDS: Digital micromirror devices, Optical lithography, Micromirrors, Two photon polymerization, Point spread functions, Fabrication, Diffraction limit, Femtosecond phenomena, Polymerization, Grayscale lithography

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Proceedings Article | 20 June 2024 Paper

Femtosecond laser induced direct patterning for liquid-metal repellent surface

Chae Rin Yu, Jun Hee Jo, Won Seok Chang

Proceedings Volume 13005, 130050X (2024) https://doi.org/10.1117/12.3021939

KEYWORDS: Metals, Liquids, Femtosecond phenomena, Optical lithography, Laser microstructuring, Oxides, Water, Resistance, Microfluidics, Electron beam lithography

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Proceedings Article | 14 January 2008 Paper

Coupling of light from an LED into a very thin light guide by a coupling lens

Jun Ho Lee, W. Chang, D. Choi

Proceedings Volume 6828, 68280K (2008) https://doi.org/10.1117/12.747743

KEYWORDS: Light emitting diodes, Waveguides, Collimation, 3D modeling, Light, Geometrical optics, Light sources, Reflection, Optics manufacturing, Polymethylmethacrylate

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Proceedings Article | 8 October 2004 Paper

Characteristics of nanopatterning on photoresist using a near-field scanning optical microscope with an He-Cd laser

Sangjin Kwon, Won-Seok Chang, Sungho Jeong

Proceedings Volume 5662, (2004) https://doi.org/10.1117/12.595819

KEYWORDS: Near field scanning optical microscopy, Nanostructures, Photoresist materials, Optical microscopes, Nanoprobes, Helium cadmium lasers, Microfabrication, Near field optics

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Proceedings Article | 20 September 2004 Paper

Fabrication of optical waveguides using laser direct writing method

Sung Cho, Jung Min Kim, Jae Kim, Won Chang, Eung Lee

Proceedings Volume 5448, (2004) https://doi.org/10.1117/12.546816

KEYWORDS: Waveguides, Polymers, Laser optics, Laser development, Optical components, Light wave propagation, Diode pumped solid state lasers, Polymer multimode waveguides, Coating, Objectives

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SPIE Journal Paper | 1 July 2004

Photothermal three-dimensional fabrication of polymers using diode-pumped solid state lasers

Won-Seok Chang, Bosung Shin, Jae-gu Kim, Kyung-Hyun Whang

JM3, Vol. 3, Issue 03, (July 2004) https://doi.org/10.1117/12.10.1117/1.1753589

KEYWORDS: Polymers, Laser ablation, 3D modeling, Diode pumped solid state lasers, Laser processing, Laser applications, Solid state lasers, Manufacturing, Laser damage threshold, Fabrication

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Proceedings Article | 18 November 2003 Paper

Micro sculpting technology using DPSSL

Won-Seok Chang, Bosung Shin, Jae-gu Kim, Kyung-Hyun Whang

Proceedings Volume 5063, (2003) https://doi.org/10.1117/12.540534

KEYWORDS: Polymers, Laser ablation, 3D modeling, Laser processing, Data modeling, Pulsed laser operation, Ultraviolet radiation, Rapid manufacturing, Solid state lasers, Manufacturing

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Proceedings Article | 19 February 2003 Paper

Microdrilling of PCB substrate using DPSS third-harmonic laser

J. Kim, Won Seok Chang, Kyung Ku Yoon, Sungho Jeong, Bo Sung Shin, Kyung Hyun Whang

Proceedings Volume 4830, (2003) https://doi.org/10.1117/12.486559

KEYWORDS: Copper, Laser drilling, Metals, Diode pumped solid state lasers, Pulsed laser operation, Numerical analysis, Ultraviolet radiation, Micromachining, Laser ablation, Scanners

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Proceedings Article | 13 September 2002 Paper

Micro-optic fabrication using laser ablation process

Won-Seok Chang, Kyung-Ku Yoon, Jaegu Kim, Bosung Shin, Kyung-Hyun Whang

Proceedings Volume 4760, (2002) https://doi.org/10.1117/12.482060

KEYWORDS: Laser ablation, Micro optics, Excimer lasers, Etching, Polymers, Polyurethane, Laser processing, Beam shaping, Pulsed laser operation, 3D modeling

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Showing 5 of 9 publications

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