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  1. Article

    Electrically controlled mRNA delivery using a polypyrrole-graphene oxide hybrid film to promote osteogenic differentiation of human mesenchymal stem cells

    Direct messenger ribonucleic acid (mRNA) delivery to target cells or tissues has revolutionized the field of biotechnology. However, the applicability of regenerative medicine is limited by the technical diffi...

    Huijung Kim, Kübra Solak, Yoojoong Han, Yeon-Woo Cho, Kyeong-Mo Koo… in Nano Research (2022)

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    Article

    Photoluminescence spectra of undoped and Sm3+-doped BaAl2S4 and BaAl2Se4 single crystals

    Undoped and Sm3+-doped BaAl2S4 and BaAl2Se4 single crystals were grown by the chemical transport reaction method. The optical energy band gaps of the BaAl2S4 and BaAl2Se4 were found to be 4.10 and 3.47 eV, respec...

    Moon-Seog **, Choong-Il Lee, Chang-Sun Yoon… in Journal of Materials Research (2001)

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    Article

    Photoluminescence spectra of Zn1−xCdxAl2Se4-4xS4x single crystals

    We investigated the photoluminescence as well as the crystal structure and optical energy gaps of the Zn1-xCdxAl2Se4-4xS4x solid solution system based on the Al-related compounds of ZnAl2Se4, ZnAl2S4, CdAl2Se4, a...

    Sung-Hyu Choe, Chang-Sun Yoon, Moon-Seog **… in Journal of Materials Research (2000)

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    Article

    Photoluminescence spectra of Zn1−xCdxAl2Se4 single crystals

    We investigated the photoluminescence spectra as well as the crystal structure and optical energy gaps of the Zn1-xCdxAl2Se4 single crystals grown by the chemical transport reaction method. It was shown from the ...

    Seung-Cheol Hyun, Chang-Dae Kim, Tae-Young Park… in Journal of Materials Research (2000)

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    Article

    Photoluminescence Spectral Lines Identification in Ho3+-, Er3+-, and Tm3+-doped MgxZn1–xSe Single Crystals

    MgxZn1-xSi: Ho3+, MgxZn1-xSe: Er3+, and MgxZn1-xSe: Tm3+ single crystals were grown by the closed-tube sublimation method. The single crystals crystallized into a zincblende structure at the composition x = 0.11 ...

    Young-Geun Kim, Ho-Jun Song, Seok-Kyun Oh, Wha-Tek Kim… in Journal of Materials Research (1999)

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    Article

    Optical absorption and the Burstein-Moss shift in heavily cobalt-doped Cd2CuGaSe4 crystals

    Chang-Dae Kim, Hyung-Gon Kim, Hae Yong Park… in Journal of Materials Science Letters (1993)