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Showing 1–2 of 2 results
Advanced filters: Author: Seung-Joon Jeon Clear advanced filters

  • Circular dichroism spectroscopy can determine optical activity in a time-resolved manner, raising the exciting prospect of directly mapping structural changes of important chemical or biological processes involving chiral molecules. Rhee et al. have overcome experimental difficulties to show that optical activity in the infrared can be detected with femtosecond time-resolution by heterodyned spectral interferometry, setting the stage for making 'molecular motion pictures' of fundamental processes from a chiral perspective.

    • Hanju Rhee
    • Young-Gun June
    • Minhaeng Cho
    Research
    Nature
    Volume: 458, P: 310-313

  • Applying in situ TEM techniques to GST-based vertical PCRAM cells, we directly observed the DC set switching process of real devices for the first time. The results show that the microstructure of crystalline GST matrix is an important structural parameter determining the local temperature distribution. In the case of highly crystallized GST matrix, the device failure occurred via two-step void formation due to the polarity-dependent electromigration.

    • Kyungjoon Baek
    • Kyung Song
    • Sang Ho Oh
    ResearchOpen Access
    NPG Asia Materials
    Volume: 7, P: e194