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Showing 1–6 of 6 results
Advanced filters: Author: B. Hehlen Clear advanced filters

  • Amorphous–amorphous phase transitions in silicon dioxide are shown to proceed through a sequence of percolation transitions, a process that has relevance to a range of important liquid and glassy systems.

    • A. Hasmy
    • S. Ispas
    • B. Hehlen
    Research
    Nature
    Volume: 599, P: 62-66

    • Mansoor Sheik-Bahae
    • Richard I. Epstein
    Reviews
    Nature Photonics
    Volume: 1, P: 693-699

  • Interest in hybrid organolead perovskites is driven by their promising optoelectronic properties and potential application as photovoltaics. In this work, insight into the electron-phonon interactions influencing these properties is gained from neutron and Raman spectroscopic measurements.

    • A. C. Ferreira
    • S. Paofai
    • P. Bourges
    ResearchOpen Access
    Communications Physics
    Volume: 3, P: 1-10

  • Laser cooling of rare-earth-doped silica may provide a route to vibration-free refrigeration of integrated photonic circuits and quantum sensors to reduce the thermal noise. Here, cooling of high-purity Yb-doped silica to 0.7 K below ambient temperature is demonstrated using sub-optimal laser parameters, and in spite of a substantial extra thermal load.

    • Esmaeil Mobini
    • Saeid Rostami
    • Arash Mafi
    ResearchOpen Access
    Communications Physics
    Volume: 3, P: 1-6