Dr. Kwang-Sun Kang Profile

Dr. Kwang-Sun Kang

Professor at Kyungil Univ

SPIE Involvement:

Author

Publications (21)

Proceedings Article | 9 October 2015 Presentation + Paper

Optical properties of polyaniline-coated silica spheres: aging effect in acetone

Byoung-Wu Kim, Sang-Jo Kim, So-Yeon Kang, Sang-Hyeon Moon, Eun-Hye Park, Kwang-Sun Kang

Proceedings Volume 9545, 95450T (2015) https://doi.org/10.1117/12.2187587

KEYWORDS: Optical spheres, Silica, Absorption, FT-IR spectroscopy, Luminescence, Polymers, Spectroscopy, Optical properties, Polymerization, Chromophores

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Proceedings Article | 31 August 2015 Presentation + Paper

Controlled growth of CdSe quantum dots on silica spheres

Byoung-Ju Kim, Dong-Hyun Jo, Se-Han Lim, Do-Kyoon Kim, Jin-Young Park, Kwang-Sun Kang

Proceedings Volume 9546, 954615 (2015) https://doi.org/10.1117/12.2187697

KEYWORDS: Optical spheres, Silica, Quantum dots, FT-IR spectroscopy, Absorption, Luminescence, Transmittance, Refractive index, Charged particle optics, Scanning electron microscopy

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Proceedings Article | 20 August 2015 Presentation + Paper

Cause of absorption band shift of disperse red-13 attached on silica spheres

Byoung-Ju Kim, Hyung-Deok Kim, Na-Rae Kim, Byeong-Gyu Bang, Eun-Hye Park, Kwang-Sun Kang

Proceedings Volume 9549, 95490P (2015) https://doi.org/10.1117/12.2187686

KEYWORDS: Absorption, Optical spheres, Silica, Bioalcohols, Photonic crystals, Spectroscopy, Visualization, Molecules, Nonlinear optical materials, Thermography

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Proceedings Article | 27 October 2014 Paper

Strong photoluminescence characteristics of sulforhodamine B attached on photonic crystal

Byoung-Ju Kim, Kwang-Sun Kang

Proceedings Volume 9181, 918117 (2014) https://doi.org/10.1117/12.2061453

KEYWORDS: Absorption, Optical spheres, Luminescence, Silica, Photonic crystals, FT-IR spectroscopy, Optical storage, Optical properties, Visible radiation, Solid state lasers

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Proceedings Article | 8 October 2014 Paper

Concentration effect on the optical absorption and luminescence properties of disperse red-13 in silica spheres

Kwang-Sun Kang

Proceedings Volume 9183, 918319 (2014) https://doi.org/10.1117/12.2061447

KEYWORDS: Absorption, Optical spheres, Luminescence, Silica, FT-IR spectroscopy, Chromophores, Molecules, Molecular interactions, Magnesium, Spectroscopy

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Proceedings Article | 12 September 2014 Paper

Temperature dependent surface modification of silica spheres with methacrylate

Kwang-Sun Kang, Byoung-Ju Kim, Dong-Hyun Jo, Sae-Han Lim, Jin-Young Park, Do-gyun Kim

Proceedings Volume 9160, 916021 (2014) https://doi.org/10.1117/12.2061456

KEYWORDS: Optical spheres, Silica, Absorption, FT-IR spectroscopy, Nanostructures, Hydrogen, Glasses, Natural surfaces, Nanolithography, Silicon

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Proceedings Article | 26 September 2013 Paper

The cause of irregular shape of the photonic crystal fabricated with recycled solvent

Jae-Hak Choi, Kwang-Sun Kang

Proceedings Volume 8816, 88160D (2013) https://doi.org/10.1117/12.2023822

KEYWORDS: Optical spheres, Silica, Photonic crystals, FT-IR spectroscopy, Absorption, Manufacturing, Water, Scanning electron microscopy, Electron microscopes, Renewable energy

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Proceedings Article | 13 September 2013 Paper

Molecular nature of PbS nanoclusters attached on the silica spheres

Kwang-Sun Kang

Proceedings Volume 8807, 880704 (2013) https://doi.org/10.1117/12.2023818

KEYWORDS: Optical spheres, Lead, Silica, FT-IR spectroscopy, Absorption, Luminescence, Sulfur, Magnesium, Spectroscopy, Nanoparticles

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Proceedings Article | 20 November 2012 Paper

Optical properties of azo-chromophore attached on the surface of a silica photonic crystal

Byoung-Ju Kim, Kwang-Sun Kang

Proceedings Volume 8564, 85640K (2012) https://doi.org/10.1117/12.999810

KEYWORDS: Absorption, Silica, Optical spheres, Photonic crystals, Bioalcohols, Optical properties, FT-IR spectroscopy, Sensors, Near infrared, Magnesium

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Proceedings Article | 15 October 2012 Paper

Fabrication of large area photonic crystal with surface modified silica spheres

Byoung-Ju Kim, Kwang-Sun Kang

Proceedings Volume 8456, 84560F (2012) https://doi.org/10.1117/12.930432

KEYWORDS: Optical spheres, Silica, FT-IR spectroscopy, Photonic crystals, Nanostructures, Nanolithography, Image processing, Absorption, Solids, Scanning electron microscopy

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Proceedings Article | 31 March 2010 Paper

Comparison of the phase transformation rate for TiO[sub]2[/sub] thin film and TiO[sub]2[/sub] nanorods

Yi Chen, K. Kang, J. Nayak, J. Kim

Proceedings Volume 7646, 764608 (2010) https://doi.org/10.1117/12.847485

KEYWORDS: Thin films, Sol-gels, Annealing, Crystals, Diffraction, Bioalcohols, Transmission electron microscopy, X-ray diffraction, Titanium dioxide, Nanorods

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Proceedings Article | 31 March 2010 Paper

Thickness effect on Schottky diode characteristics of ZnO thin film

Jyoti Nayak, Yi Chen, Kwang Sun Kang, Jaehwan Kim

Proceedings Volume 7646, 76461B (2010) https://doi.org/10.1117/12.847486

KEYWORDS: Zinc oxide, Thin films, Coating, Diodes, Thin film coatings, X-ray diffraction, Zinc, Sol-gels, Scanning electron microscopy, Actuators

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Proceedings Article | 31 March 2010 Paper

High crystalline GaN nanoparticle and GaN thin film fabrication

Yi Chen, K. Kang, J. Nayak, Jaehwan Kim

Proceedings Volume 7646, 76461J (2010) https://doi.org/10.1117/12.847484

KEYWORDS: Gallium nitride, Nanoparticles, Thin films, Crystals, Particles, Silicon, Sol-gels, Transmission electron microscopy, Annealing, Bioalcohols

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Proceedings Article | 1 April 2009 Paper

Transport mechanisms in polymer and TiO2 Schottky diode

K. Yoo, K. Kang, Y. Chen, K. Han, Jaehwan Kim

Proceedings Volume 7291, 72910J (2009) https://doi.org/10.1117/12.815583

KEYWORDS: Diodes, Nanoparticles, Oxides, Semiconductors, Polymers, Metals, Coating, Solar cells, Interfaces, Titanium dioxide

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Proceedings Article | 1 April 2009 Paper

Effects of annealing temperature on the performance of the Schottky diode fabricated with TiO2 sol-gel

Y. Chen, K. H. Yoo, K. S. Kang, Jaehwan Kim

Proceedings Volume 7291, 72910Q (2009) https://doi.org/10.1117/12.815584

KEYWORDS: Sol-gels, Annealing, Diodes, Thin films, Temperature metrology, FT-IR spectroscopy, Absorption, Nanoparticles, Thin film coatings, Titanium dioxide

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Proceedings Article | 26 March 2008 Paper

Feasibility of e-paper made with cellulose

K. H. Yoo, K. J. Han, Yi Chen, K. S. Kang, Jaehwan Kim

Proceedings Volume 6931, 69310G (2008) https://doi.org/10.1117/12.776822

KEYWORDS: Nanofibers, Transmittance, Sodium, Photoresist materials, Actuators, Polymers, Smart materials, Semiconducting wafers, Electrodes, Ions

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Cellulose is a beneficial material that has low cost, light weight, high compatibility, and biodegradability. Recently electro-active paper (EAPap) composed with cellulose was discovered as a smart material for application to variety industrial fields such as smart wall-paper, actuator, and magic carpet. It also exhibited actuator property through ion migration and piezoelectric effect. Since cellulose acetate (CA) film has optically transparent property, we focused on optical field application, such as electronic paper, prismsheet, and polarized film. Since CA can be easily dissolved in variety of organic solvent, various weight % (from 1 to 25 wt. %) of CA solution in acetone was prepared. Polydimethylsilane (PDMS) master pattern was fabricated on the silicone wafer. CA solution was poured to the master mold and dried using spin-coating or tape casting method. Various shape and height patterns, such as circle, honeycomb, and rectangular patterns were fabricated using 12 wt. % CA solution. The resulting pattern showed uniform size in the large area without defect. These patterns can be utilized as a substrate and cell pattern for the electronic paper. To investigate saponification (SA) effect to convert CA to regenerated cellulose, CA film was immersed into the sodium methoxide solution in methanol for various times. The fabricated CA films were stretched and immersed into the sodium methoxide solution in methanol to desubstitute the acetate group. These regenerated cellulose films have larger mechanical strength than CA films. Although the UV-visible transmittance was decreased as increasing SA time, the transmittance of the further SA process and stretched film backed up near untreated CA film. Although the cross-sectional image of the saponified and unstretched CA film did not have specific directional structure, the cross-sectional FESEM image of the saponified and stretched CA film had one directional fiber structure. The fiber was aligned to the stretched direction. Most of the compositions were one directional ordered nanofibers having diameter of approximately 30nm.

Proceedings Article | 26 March 2008 Paper

Schottky diode made on cellulose paper with PEDOT:PSS and pentacene

Yi Chen, K. J. Han, K. H. Yoo, K. S. Kang, Jaehwan Kim

Proceedings Volume 6931, 69310A (2008) https://doi.org/10.1117/12.776581

KEYWORDS: Diodes, Absorption, Aluminum, Gold, Electrodes, Semiconductors, Doping, Photoresist materials, Image processing, Actuators

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Proceedings Article | 26 March 2008 Paper

Micro-contact printing method for metal micro-patterning with PUA

K. J. Han, Y. Chen, K. H. Yoo, K. S. Kang, Jaehwan Kim

Proceedings Volume 6931, 69310C (2008) https://doi.org/10.1117/12.776815

KEYWORDS: Gold, Silicon, Printing, Photoresist materials, Microelectromechanical systems, Lithography, Microchannel plates, Semiconducting wafers, Metals, Hydrogen

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Proceedings Article | 11 April 2007 Paper

Micro-mold fabrication using cellulose acetate

K. Y. Cho, H. K. Lim, Y. Chen, Jaehwan Kim, K. S. Kang

Proceedings Volume 6528, 65280C (2007) https://doi.org/10.1117/12.715881

KEYWORDS: Photoresist materials, Silicon, Polymers, Electroactive polymers, Semiconducting wafers, Actuators, Optical components, Electronics, Photomasks, Process control

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