Wszystkie pola: Cheong, I. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Fabrication of Antireflection Structures as a Protective Layer of Solar Cells with Nanoporous Silica Films and Nanoimprinted Moth-Eye Structure
Autorzy:: Kim, K.
Han, J.
Jang, J.
Choi, C.
Choi, S.
Kim, C.
Kye, H.
Cheong, I.
Powiązania:: https://bibliotekanauki.pl/articles/1492625.pdf
Data publikacji:: 2011-12
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 61.46.-w
68.37.-d
68.55.-a
78.20.-e
Opis:: The antireflection structures are fabricated by sol-gel process as a protective layer of solar cells and by hot embossing process with anodized aluminum oxide membrane template on polycarbonate film. The optical properties and morphology of the antireflection structures are analyzed by UV-visible spectroscopy and field emission scanning electron microscopy, respectively. The total conversion efficiency of a polycrystalline Si solar cell module with the protective layer, sol-gel-derived nanoporous antireflection structure, is increased by 2.6% and 5.7% for one-side antireflection coated prismatic matt glass and both-side antireflection coated prismatic matt glass, respectively.
Źródło:: Acta Physica Polonica A; 2011, 120, 6A; A-047-A-049
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Effect of Additives on the Densification Processes and Properties of Silica-Based CMCs
Autorzy:: Ko, S.-Y.
Yong, S.-M.
Lee, S. J.
Cheong, D.-I.
Baek, S.
Powiązania:: https://bibliotekanauki.pl/articles/355134.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: ceramic matrix composite
CMC
silica
densification
mechanical properties
Opis:: The effect of additives on the densification behavior and mechanical properties of pure and additive (Zr, B and Mg)-added silica ceramics were investigated for their application to the matrix phase of a silica fiber reinforced silica (SiO₂ /SiO_2f ) composite. The additives affected the rate of densification and crystallization (or transformation) of the amorphous silica. Among the compositions, pure silica ceramics sintered at 900°C for 1h showed the maximum flexural strength. Based on the results, SiO₂ /SiO_2f was fabricated by a repeated vacuum-assisted infiltration method followed by the heat treatment at 900°C for 1h. The relative density of the composite was 78.2% with a flexural strength of 22.4 MPa. Fractography revealed that the composite was damaged by strong bonding at the fiber/matrix interface and the fracture of fiber.
Źródło:: Archives of Metallurgy and Materials; 2018, 63, 3; 1485-1488
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Influence of the Calcination Temperature on the Optical and Mechanical Properties of Y2O3-MgO Nanocomposite
Autorzy:: Yong, S.-M.
Choi, D. H.
Lee, K.
Ko, S.-Y.
Cheong, D.-I.
Powiązania:: https://bibliotekanauki.pl/articles/351252.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: infrared transparent ceramics
Y2O3-MgO nanocomposites
sol-gel combustion synthesis
calcination
spark plasma sintering
Opis:: Y₂O₃-MgO nanocomposites are one of the most promising materials for hypersonic infrared windows and domes due to their excellent optical transmittance and mechanical properties. In this study, influence of the calcination temperature of Y₂O₃-MgO nanopowders on the microstructure, IR transmittance, and hardness of Y₂O₃-MgO nanocomposites was investigated. It was found that the calcination temperature is related to the presence of residual intergranular pores and grain size after spark plasma sintering. The nanopowders calcined at 1000°C exhibits the highest infrared transmittance (82.3% at 5.3 μm) and hardness (9.99 GPa). These findings indicated that initial particle size and distribution of the nanopowders are important factors determining the optical and mechanical performances of Y₂O₃-MgO nanocomposites.
Źródło:: Archives of Metallurgy and Materials; 2018, 63, 3; 1481-1484
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Artykuł

Skocz do pozycji: 5.

Tytuł:: Polonistyka koreańska wczoraj i dziś
Past and present of Korean Polish Studies
Autorzy:: Byung-Kwon, Cheong
Powiązania:: https://bibliotekanauki.pl/articles/511620.pdf
Data publikacji:: 2010
Wydawca:: Wydawnictwo Uniwersytetu Śląskiego
Tematy:: Polish Studies in Korea
Polish Faculty at Hankuk University of Foreign Studies
Opis:: The article presents the history of Polish Studies at the University of Foreign Languages in Seul. The author, who is the Head of Polish Department, discusses its foundation and development. He presents also the activity of the Department over past twenty years – shaping of the curricula and their present form, activity of the staff in the field of academic research and translations, and international cooperation. Polish department at Hankuk Uni-versity of Foreign Studies was founded in 1987 and it initiated Polish Studies in Korea. Currently, about 130 people are studying there. Classes are held by 10 teachers and scholars, two people from Poland among them. Graduates of the Department are likely to obtain employment, due to the good economic relations between Poland and Korea.
Źródło:: Postscriptum Polonistyczne; 2010, 2(6); 15-24
1898-1593
2353-9844
Pojawia się w:: Postscriptum Polonistyczne
Dostawca treści:: Biblioteka Nauki

Artykuł

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