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Showing 1–8 of 8 results
Advanced filters: Author: Martin Winger Clear advanced filters

  • Using new optogenetic tools to induce distinct ion fluxes, a study shows that these discrete signals trigger different metabolic and transcriptional pathways that allow plants to respond to specific types of stress.

    • Meiqi Ding
    • Yang Zhou
    • Kai R. Konrad
    ResearchOpen Access
    Nature
    Volume: 633, P: 872-877

  • Existing optogenetic silencing methods affect membrane potential, biochemistry or protein integrity. Here, the authors demonstrate an approach for silencing synaptic transmission that combines fast activation and reversibility, by using nondisruptive, reversible, light-evoked clustering of synaptic vesicles, which they validate in Caenorhabditis elegans, zebrafish, and murine cell culture.

    • Dennis Vettkötter
    • Martin Schneider
    • Alexander Gottschalk
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-17

  • Archaeogenetic study of ancient DNA from medieval northwestern Europeans reveals substantial increase of continental northern European ancestry in Britain, suggesting mass migration across the North Sea during the Early Middle Ages.

    • Joscha Gretzinger
    • Duncan Sayer
    • Stephan Schiffels
    ResearchOpen Access
    Nature
    Volume: 610, P: 112-119

  • Researchers report the first demonstration of an ultrafast all-optical switch in the single-photon regime. The device, which consists of an InAs/GaAs quantum dot in a photonic crystal defect cavity, exhibits a coherent coupling constant of 141 meV and a quality factor of 25,000. The overall switching time is around 50 ps.

    • Thomas Volz
    • Andreas Reinhard
    • Ataç Imamoğlu
    Research
    Nature Photonics
    Volume: 6, P: 605-609

  • Researchers observe a continuous change in photon correlations from strong antibunching to bunching by tuning either the probe laser or the cavity mode frequency. These results, which demonstrate unprecedented strong single-photon nonlinearities in quantum dot cavity system, are explained by the photon blockade and tunnelling in the anharmonic Jaynes–Cummings model.

    • Andreas Reinhard
    • Thomas Volz
    • Ataç Imamoğlu
    Research
    Nature Photonics
    Volume: 6, P: 93-96

  • Researchers demonstrate a chip-scale optomechanical accelerometer with displacement read-out using a photonic crystal cavity integrated with a tethered nanogram test mass of high mechanical Q-factor. The device achieves an acceleration resolution of 10 µg Hz−1/2 for sub-mW optical power, a bandwidth greater than 20 kHz, and a dynamic range of 50 dB.

    • Alexander G. Krause
    • Martin Winger
    • Oskar Painter
    Research
    Nature Photonics
    Volume: 6, P: 768-772