• Bulletin of the Korean Chemical Society
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• v.30 no.2
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• pp.475-478
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• 2009

• Bulletin of the Korean Chemical Society
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• v.27 no.1
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• pp.115-118
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• 2006

• 한국가스학회:학술대회논문집
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• 2003.10a
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• pp.137-144
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• 2003

• 대한방사선방어학회:학술대회논문집
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• 2009.11a
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• pp.42-43
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• 2009

• Applied Microscopy
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• v.45 no.1
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• pp.1-8
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• 2015

We have developed a new HD-2700 (Hitachi High-Technologies Corp., Japan) scanning transmission electron microscope (STEM) that includes an automatic aberration correction function, and a large-solid-angle energy-dispersive X-ray spectroscopy detector that enables high-resolution and sensitive analysis. For observation with atomic resolution, using spherical-aberration-corrected STEM, in order that satisfactory performance of the device can be achieved readily, and within a short time, irrespective of the operator's skill level, a spherical-aberration-correction device with an automatic aberration-correction function was developed. This automatic aberration-correction function carries out the entire correction-related process (aberration measurement, selection and correction) automatically, with automatic selection of the aberrations that require correction, and automatic measurement of the appropriate corrections.

• 한국정보디스플레이학회:학술대회논문집
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• 2007.08a
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• pp.427-430
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• 2007

Phosphorescent OLED technology is a core technology driver for OLED display and lighting products due to the inherent and demonstrated efficiency advantages. Here we present recent results in our continued advancements of PHOLED power efficiency and operational stability with focus on narrowing emission line-width, reducing voltage, and overall design for maximizing device lifetime.

• KEPCO Journal on Electric Power and Energy
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• v.1 no.1
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• pp.93-97
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• 2015

The combustion tests for Korean anthracite-bituminous coal blend were carried out in the 200 MW utility boiler. The burning characteristics of the blend were studied with a thermogravimetric analyzer (TGA). From the observation of TGA burning profiles, it was found that the presence of bituminous coal in the blend appeared to enhance the reactivity of anthracite in the higher temperature region, indicating certain interactions between the two coals. The plant test showed the boiler operation was reasonably stable with somewhat poor combustion efficiency, and some modification of the combustion environment in the furnace is necessitate for the further stable plant operation.

• 한국초전도학회:학술대회논문집
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• v.11
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• pp.5-5
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• 2001

• 한국정보디스플레이학회:학술대회논문집
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• 2003.07a
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• pp.169-173
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• 2003

Universal Display Corporation (UDC), together with its University partners at Princeton University and the University of Southern California, are developing high-efficiency electrophosphorescent OLED devices, based on triplet emission. Recent results show both excellent device efficiencies and good lifetimes for the commercialization of low power consumption, full-color, passive and activematrix OLED displays. We also show that phosphorescent devices may be driven by low cost amorphous silicon backplanes, and discuss the benefits of using our proprietary top emission OLED device architecture.

• Journal of Power Electronics
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• v.16 no.3
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• pp.1218-1225
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• 2016

The avionic battery discharge regulator (BDR) plays an important role in a power-conditioning unit. With its merits of high efficiency, stable transfer function, and continuous input and output currents, the non-isolated Weinberg converter (NIWC) is suitable for avionic BDR. An improved peak current control strategy is proposed to achieve high current-sharing accuracy. Current and voltage regulators are designed based on a small signal model of a three-module NIWC system. The system with the designed regulators operates stably under any condition and achieves excellent transient response and current-sharing accuracy.