Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Hyung-Bock Lee"'
Publikováno v:
Ceramics International. 38:S577-S580
Effects of crystal structure on the photoluminescence (PL) and photocurrent (PC) characteristics of Sr 1− x Ba x Al 2 O 4 : Eu 2+ , Ni 2+ phosphors were investigated as a function of Ba 2+ content (0.1 ≤ x ≤ 0.5) and/or type of doping ions. PL
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2234ec98f0bc9ffb108b3928a5f532a
https://doi.org/10.1016/j.ceramint.2011.05.101
https://doi.org/10.1016/j.ceramint.2011.05.101
Publikováno v:
Integrated Ferroelectrics. 115:1-8
The characteristics of photocurrent of Sr1-x Ca x Al2O4: Eu2+, Ni2+ prepared by sol-gel method were investigated as a function of Ca2+ content (0 ≤ x ≤ 0.35) and/or type of doping ions. For the specimens sintered at 1350°C for 5 h, a monoclinic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a7c7b201217848fdd524254f8d079510
https://doi.org/10.1080/10584587.2010.488529
https://doi.org/10.1080/10584587.2010.488529
Autor:
Do Kyung Kim, Shanghua Li, Mamoun Muhammed, Hyung-Hwan Kim, Hyung Bock Lee, Hyuck Kim, Meng Meng Lin
Publikováno v:
J. Mater. Chem.. 20:444-447
Completely water dispersible and highly monodispersed superparamagnetic iron oxide nanoparticles (SPIONs) were prepared. The surface of SPIONs was modified with dual-crosslinked amine activated dextran (AMD) and chemical cleavage of AMD on SPIONs was
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac9de81861dec04fbdb41c0d86b9634f
https://doi.org/10.1039/b918416c
https://doi.org/10.1039/b918416c
Publikováno v:
Journal of the Korean Ceramic Society. 46:679-684
Phosphors of Eu 2+ doped alkaline earth aluminates MAl₂O₄:Eu 2+ (M=Sr, Ba, Ca) have been prepared by sol-gel process and their characterization of photoluminescence and photocurrent properties have been performed. The phosphors prepared by sol-ge
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::39ef0f5886401e1e72cc6f64df7f242c
https://doi.org/10.4191/kcers.2009.46.6.679
https://doi.org/10.4191/kcers.2009.46.6.679
Publikováno v:
Journal of the Korean Ceramic Society. 45:815-820
The microstructure and mechanical properties of TiB₂/Si nanocomposites based on the Ti-Si-B system, consolidated by spark plasma sintering of mechanically alloyed activated nanopowders, have been characterized. Mechanical Alloying was carried out i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4658274cd7f496a3314a0836dec4a5fd
https://doi.org/10.4191/kcers.2008.45.1.815
https://doi.org/10.4191/kcers.2008.45.1.815
Publikováno v:
Journal of the Korean Ceramic Society. 45:191-195
Highly ordered silver nanowire with a diameter of 10 ㎚ was arrayed by electroless deposition in a porous anodic aluminum oxide (AAO) membrane. The AAO membrane was fabricated electrochemically in an oxalic acid solution via a two-step anodization p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb81b1f2b9438a089a1d975912dea6bc
https://doi.org/10.4191/kcers.2008.45.4.191
https://doi.org/10.4191/kcers.2008.45.4.191
Autor:
Chang Wook Kim, Hyung-Bock Lee
Publikováno v:
Journal of the Korean Ceramic Society. 43:646-652
Several oxynitride glasses were fabricated by means of adding Si3N4 powders as nitrogen source to Ca-Al-Si-O-N (CAS) and Mg-Al-Si-O-N (MAS) glass powders, and heat-treated in graphite crucible at 1600 ℃ for 1 h. The physical and mechanical properti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a2068ba9d82a765896e7ccfd7e19b422
https://doi.org/10.4191/kcers.2006.43.10.646
https://doi.org/10.4191/kcers.2006.43.10.646
Autor:
Hyung-Bock Lee, Chang Wook Kim
Publikováno v:
Journal of the Korean Ceramic Society. 43:653-659
The glass-SiC composites have been manufactured via viscous flow of glass for investigating their sinterability and various properties. The relative density of 99.6% could be achieved when 5 wt% SiC was mixed with glass powder, glass-rearranged at 46
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cd69cb5c1859d09f562a628411893d35
https://doi.org/10.4191/kcers.2006.43.10.653
https://doi.org/10.4191/kcers.2006.43.10.653
Autor:
Hyung-Bock Lee, Chang Wook Kim
Publikováno v:
Journal of the Korean Ceramic Society. 43:660-665
The mechanical properties of Al₂O₃-SiC composites manufactured with adding various amount and size of SiC particles have been measured and analyzed. Generally, the elastic modulus of the composites shows about 50% less than that of PL-8 (45 wt% A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12f7ff1b5c0b0b64ecbb2dbc4ecec10c
https://doi.org/10.4191/kcers.2006.43.10.660
https://doi.org/10.4191/kcers.2006.43.10.660
Autor:
Do Kyung Kim, Muhammet S. Toprak, Mamoun Muhammed, Maria Mikhaylova, Yun Suk Jo, Steven J. Savage, Thomas Tsakalakos, Hyung Bock Lee
Publikováno v:
Solid State Phenomena. :165-168
The influence of mixtures of Ni0.5Zn0.4Cu0.1Fe2O4, CoFe2O4, and graphite on the permeability, permittivity and microwave absorption properties in a composite embedded with insulating polymeric matrix, that can be used for X- and P-band radar absorpti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a561f786ea854c3bc05ef3340bb09bdf
https://doi.org/10.4028/www.scientific.net/ssp.99-100.165
https://doi.org/10.4028/www.scientific.net/ssp.99-100.165