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RISS 인기검색어
- 검색키워드
- 저자 : 이성재 ( Seong Jae Lee ) (검색결과 204 건)
- 무료
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이성재,송재원,신상영,Lee, Seong-Jae,Song, Jae-Won,Sin, Sang-Yeong 대한전자공학회 1984 전자공학회지 Vol.21 No.3
Submicron gratings are fabricated holographically on thin film single mode and multimode waveguides. Thin film waveguides are made by spin-coating polyurethane solution on the substrates of microscope slide glass and Corning 7059 glass. In order to characterize thin film waveguides, the refract사e index and the thickness of thin films are measured by using the m-line spectroscopy. The fabricated gratings are tested as a grating coupler, a mode converter, and a beam splitter. Also chirped gratings are fabricated to observe beam expansion phenomena and thus the possibility of the wavelength demultiplexing.
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이성재,정경호 ( Seong Jae Lee,Kyung Ho Chung ) 한국고무학회 1996 엘라스토머 및 콤포지트 Vol.31 No.5
A correlative analysis has been carried out to predict the average particle size of rubber dispersed phase in high impact polystyrene manufactured by bulk polymerization. To do the correlation, a mechanistic model suggested previously by the author was used for describing the size of stabilizing particles agitated under the turbulent viscous shear subranges in a prepolymerization reactor, where the rubber particles were assumed to be formed at the time of phase inversion in the reactor. Viscosities required for the model were postulated to describe the overall behavior of butadiene rubber and polystyrene mixture along the wide range of conversion. The good agreement between the model and the experimental data from a plant was quite satisfactory for the prediction of the average rubber particle size of high impact polystyrene.
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