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Your search keyword '"Shang Hyeun Park"' showing total 2 results
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2 results on '"Shang Hyeun Park"'

1. The production of a flexible electroluminescent device on polyethylene terephthalate films using transparent conducting carbon nanotube electrode

Author

Dong-Wook Shin, Ji-Beom Yoo, Jin Young Kim, Mun Ja Kim, In taek Han, and Shang Hyeun Park

Subjects
Materials science, Composite number, General Chemistry, Substrate (electronics), Carbon nanotube, Adhesion, Electroluminescence, law.invention, chemistry.chemical_compound, chemistry, law, Electrode, Polyethylene terephthalate, General Materials Science, Composite material, Transparent conducting film
Abstract

An inorganic electroluminescent (EL) device on a flexible polyethylene terephthalate (PET) substrate and its properties were investigated. The transparent conducting film (TCF) made from carbon nanotubes (CNTs) (CNT-TCF) was employed in the flexible EL device. CNT-TCF was formed by filtration of CNT solution and was transferred to the PET film. It was found that the brightness of the inorganic EL device was strongly dependent on the quality of the CNT composite films. After a 3-aminopropyltriethoxysilane treatment of the PET substrate, CNTs uniformly were dispersed and showed a good adhesion to the substrate, and the resulting EL device showed better performance. The flexible EL device showed the brightness of 96.8 cd/m2 at 28 kHz and 50 V.

Published
2009

2. Short carbon nanotubes produced by cryogenic crushing

Author

Jong M. Kim, DongHun Lee, Jeonghee Lee, SeGi Yu, Y. W. Jin, Young Hee Lee, Jungna Heo, Kay Hyeok An, Taewon Jeong, Hyouksoo Han, Seon Mi Yoon, Jong-Bong Park, Igor Kovalev, Young-Nam Kwon, Jae-Young Choi, and Shang-hyeun Park

Subjects
Thermogravimetric analysis, Materials science, integumentary system, musculoskeletal, neural, and ocular physiology, Mechanical properties of carbon nanotubes, General Chemistry, Carbon nanotube, Liquid nitrogen, Dispersant, law.invention, Solvent, symbols.namesake, surgical procedures, operative, nervous system, law, symbols, General Materials Science, Particle size, Composite material, Raman spectroscopy
Abstract

A cryogenic crushing method to produce short carbon nanotubes (CNTs) is described. Crushing CNTs at liquid nitrogen temperature allows them to be shortened and make them appreciably soluble in a solvent without any dispersant. Typical lengths of less than 500 nm were obtained from 30 min crushing. The CNTs were characterized using atomic force microscopy, thermogravimetric, and Raman analyses.

Published
2006

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