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  1. Article

    Open Access

    Impact of Transition Metal Layer Vacancy on the Structure and Performance of P2 Type Layered Sodium Cathode Material

  2. Vacancy in the transition metal layer of sodium cathode material induces the formation lone-pair electrons in the O 2p orbital.

  3. ...
  4. Orynbay Zhanadilov, Sourav Baiju, Natalia Voronina, Jun Ho Yu in Nano-Micro Letters (2024)

  5. Article

    Open Access

    Achieving volatile potassium promoted ammonia synthesis via mechanochemistry

    Potassium oxide (K2O) is used as a promotor in industrial ammonia synthesis, although metallic potassium (K) is better in theory. The reason K2O is used is because metallic K, which volatilizes around 400 °C, sep...

    Jong-Hoon Kim, Tian-Yi Dai, Mihyun Yang, Jeong-Min Seo in Nature Communications (2023)

  6. No Access

    Article

    Ultralow-dielectric-constant amorphous boron nitride

    Decrease in processing speed due to increased resistance and capacitance delay is a major obstacle for the down-scaling of electronics13. Minimizing the dimensions of interconnects (metal wires that connect diff...

    Seokmo Hong, Chang-Seok Lee, Min-Hyun Lee, Yeongdong Lee, Kyung Yeol Ma in Nature (2020)

  7. Article

    Open Access

    Observation of Restored Topological Surface States in Magnetically Doped Topological Insulator

    The introduction of ferromagnetic order in topological insulators in general breaks the time-reversal symmetry and a gap is opened in topological surface bands. Various studies have focused on gap-opened magne...

    **su Kim, Eun-Ha Shin, Manoj K. Sharma, Kyuwook Ihm in Scientific Reports (2019)

  8. Article

    Open Access

    Investigation of Thermally Induced Degradation in CH3NH3PbI3 Perovskite Solar Cells using In-situ Synchrotron Radiation Analysis

    In this study, we employ a combination of various in-situ surface analysis techniques to investigate the thermally induced degradation processes in MAPbI3 perovskite solar cells (PeSCs) as a function of temperatu...

    Nam-Koo Kim, Young Hwan Min, Seokhwan Noh, Eunkyung Cho, Gitaeg Jeong in Scientific Reports (2017)

  9. Article

    Open Access

    Coulomb nanoradiator-mediated, site-specific thrombolytic proton treatment with a traversing pristine Bragg peak

    Traversing proton beam-irradiated, mid/high-Z nanoparticles produce site-specific enhancement of X-ray photon-electron emission via the Coulomb nanoradiator (CNR) effect, resulting in a nano- to micro-scale th...

    Jae-Kun Jeon, Sung-Mi Han, Soon-Ki Min, Seung-Jun Seo, Kyuwook Ihm in Scientific Reports (2016)

  10. No Access

    Article

    Reversible phase modulation and hydrogen storage in multivalent VO2 epitaxial thin films

    Hydrogen, the smallest and the lightest atomic element, is reversibly incorporated into interstitial sites in vanadium dioxide (VO2), a correlated oxide with a 3d1 electronic configuration, and induces electronic...

    Hyo** Yoon, Minseok Choi, Tae-Won Lim, Hyunah Kwon, Kyuwook Ihm in Nature Materials (2016)

  11. No Access

    Article

    Direct visualization of a cycloaddition reaction on frozen asymmetric Si dimers at room temperature

    We firstly report an experimental visualization of a cycloaddition reaction on RT frozen asymmetric Si dimers. The frozen Si dimers with a local c(4 × 2) order were prepared by pinning flip-flop** Si dimers ...

    Jaeyoon Baik, Kyuwook Ihm, Taekyun Ha, Ki-Seok An in Journal of the Korean Physical Society (2016)

  12. No Access

    Article

    Rotation curve of galaxies by the force induced by mass of moving particles

    Many attempts have been made to explain the flat rotation curve of spiral galaxies regardless of distance from the center, in disagreement with the Newtonian prediction that this speed should diminish as the i...

    Kyuwook Ihm, Kyoung-Jae Lee in Astrophysics and Space Science (2013)

  13. No Access

    Article

    Investigation of Amorphous InGaZnO Based TFT Interface Properties with Synchrotron Radiation Analysis

    We investigated the amorphous indium gallium zinc oxide (IGZO) based TFT interface properties using synchrotron radiation analysis. Near edge x-ray absorption fine structure shows the presence of N2 molecules bet...

    Minho Joo, Jongkwon Choi, Seokhwan Noh, Kyuho Park in MRS Online Proceedings Library (2008)