Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Dongkyung Park"'
Publikováno v:
Journal of Nanoscience and Nanotechnology. 16:3009-3013
Epoxy resin has been required to have a low dielectric constant (D(k)), low dissipation factor (Df), low coefficient of thermal expansion (CTE), low water absorption, high mechanical, and high adhesion properties for various applications. A series of
Autor:
Hongsuk Suh, Jinwoo Kim, Shin Hyun Kim, Taehyo Kim, Jin Young Kim, Il Kim, Joo Young Shim, Dongkyung Park, Juae Kim
Publikováno v:
Bulletin of the Korean Chemical Society. 36:2238-2246
We report new random copolymers using the electron-deficient unit N-alkyl-2,2′-bithiophene-3,3′-dicarboximide (BTI) for organic solar cells. For absorption over a broader range of the solar spectrum, push–pull types of conjugated polymers PBTIB
Autor:
Joo Young Shim, Hongsuk Suh, Dongkyung Park, Il Kim, Jin Young Kim, Juae Kim, Jinwoo Kim, Han Young Woo, Taehyo Kim
Publikováno v:
Thin Solid Films. 580:29-35
Dioctyloxy substituted dimethyl-2 H -benzimidazole (4,7-dibromo-5,6-dioctyloxy-2,2-dimethyl-2 H -indene, DOMBI) was prepared and copolymerized with thiophene (or bithiophene) and carbazole using both Stille and Suzuki polymerization. In DOMBI, the su
Publikováno v:
IEEE Journal of Solid-State Circuits. 49:1848-1860
This paper presents a floating-buck dimmable LED driver for solid-state lighting applications. In the proposed driver, an adaptive timing difference compensation (ATDC) is developed to adaptively adjust the off-time of the low-side power switch to en
Autor:
Hoi Lee, Dongkyung Park
Publikováno v:
IEEE Transactions on Circuits and Systems II: Express Briefs. 61:599-603
This brief presents design techniques to improve both the power efficiency and the operation frequency of low-voltage current-mode boost converters for single-cell NiMH battery applications. For delivering a wide range of load currents, a cross-condu
Publikováno v:
Journal of Vinyl and Additive Technology. 22:163-168
Publikováno v:
Journal of Vinyl and Additive Technology. 22:146-155
Organic alkyl and aryl phosphites are effective antioxidants and photostabilizers with applications in a wide range of polymers. The primary role of phosphites is to decompose hydroperoxide. However, aryl phosphites are also capable of reacting as an
Publikováno v:
Journal of Applied Polymer Science. 124:1731-1736
Polyoxymethylene (POM) has been widely utilized in industry due to its light weight properties in engineering plastics. At present, POM applications are expanding into the car industry, especially in fuel tanks. Hindered alkyl phenol derivatives have
Publikováno v:
Polymer Degradation and Stability. 75:287-294
The performance of several differently treated clinoptilolite zeolites in the degradation of polypropylene was investigated in this study. The composition of degradation products, especially liquid fractions resulted over studied catalysts, was compa
Autor:
Hoi Lee, Dongkyung Park
Publikováno v:
CICC
This paper describes a floating buck dimmable LED driver for solid-state lighting applications. Adaptive timing difference compensation is proposed to enable the driver to achieve high accuracy of the average LED current, fast settling time, and high