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Volume 17 Issue 5, May 2018

Gas-filled MRI contrast agents

Gas-filled vesicles derived from photosynthetic microbes are shown to elicit magnetic resonance imaging contrast in vitro and in vivo with the potential for acoustically modulated multiplexing and molecular sensing.

See Lu et al. and News & Views by Bulte

Image: Image by Barth van Rossum for Caltech. Cover Design: David Shand.

Editorial

  • Whether you like exploring the mysteries of light–matter interactions, playing with a versatile chemical platform, or developing the most efficient devices, metal halide perovskites could be the materials for you.

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  • Using a thin-film geometry and electric-field-driven enhancement of pyroelectric response, a relaxor ferroelectric is shown to display superior power densities for thermal harvesting.

    • Joseph P. Feser
    • Jayakanth Ravichandran
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  • Microbial gas vesicles have been developed for use as MRI contrast agents whose contrast can be inactivated by applying ultrasound waves to collapse the vesicles.

    • Jeff W. M. Bulte
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  • Unlike conventional inorganic semiconductors, which are typically brittle, α-Ag2S exhibits room-temperature ductility with favourable electrical properties, offering promise for use in high-performance flexible and stretchable devices.

    • Dae-Hyeong Kim
    • Gi Doo Cha
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  • Voltage control of recently discovered two-dimensional magnets has been demonstrated, highlighting their potential for low-power data storage.

    • Ajit Srivastava
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