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Article |
Calcium-mediated nitrogen reduction for electrochemical ammonia synthesis
The production of ammonia via the Haber–Bosch process is carbon-intensive and centralized, but electrochemical methods such as lithium-mediated processes in organic electrolytes could enable decentralized production using renewable energy. Calcium is now shown to mediate nitrogen reduction for ammonia synthesis.
- Xianbiao Fu
- , Valerie A. Niemann
- & Ib Chorkendorff
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Perspective |
The topology of electronic band structures
This Perspective provides a broad introduction to topological materials science, with a particular focus on semimetals.
- Prineha Narang
- , Christina A. C. Garcia
- & Claudia Felser
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Article |
The interplay between thermodynamics and kinetics in the solid-state synthesis of layered oxides
Understanding the competition between thermodynamics and kinetics is crucial for the rational synthesis of inorganic materials. The synthesis of two-layer sodium metal oxides is investigated by in situ synchrotron XRD and a model is developed to rationalize why the observed phase progression proceeds through non-equilibrium three-layered intermediates.
- Matteo Bianchini
- , Jingyang Wang
- & Gerbrand Ceder
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News & Views |
Here comes the spaser
Plasmonic nanolasers embedded in living cells and animal tissues are shown to emit strongly, making them promising potential biocompatible probes.
- Catherine Alix-Panabières
- & Klaus Pantel
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News & Views |
Two-dimensional gallium nitride
Graphene is used as a capping sheet to synthesize 2D gallium nitride by means of migration-enhanced encapsulation growth. This technique may allow the stabilization of 2D materials that are not amenable to synthesis by traditional methods.
- Nikhil A. Koratkar
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Article |
Melt-driven mechanochemical phase transformations in moderately exothermic powder mixtures
Mechanochemical reactions between solid phases can be triggered by localized melting caused by deformation-induced heating.
- Samuel A. Humphry-Baker
- , Sebastiano Garroni
- & Christopher A. Schuh
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Article |
Paramagnetic fluorinated nanoemulsions for sensitive cellular fluorine-19 magnetic resonance imaging
New paramagnetic fluorinated nanoemulsions significantly enhance the detection sensitivity of MRI compared with alternative fluorine-19 tracers.
- Alexander A. Kislukhin
- , Hongyan Xu
- & Eric T. Ahrens
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Article |
A small-molecule dye for NIR-II imaging
A renally cleared, water-soluble dye emitting in the near-infrared-imaging (NIR)-II window outperforms a clinically approved NIR-I dye in the in vivo imaging of tumours and their nearby blood and lymphatic vasculatures.
- Alexander L. Antaris
- , Hao Chen
- & Hongjie Dai
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Letter |
Benzene-derived carbon nanothreads
A high-pressure reaction is used to convert benzene molecules to one-dimensional crystalline carbon nanostructures that show diamond-like sp3 bonding. These nanothreads are expected to have strength and stiffness greater than carbon nanotubes.
- Thomas C. Fitzgibbons
- , Malcolm Guthrie
- & John V. Badding
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News & Views |
Fast track to production
A high-throughput approach combining combinatorial deposition of materials with parallel blow-forming speeds up the discovery rate of bulk metallic glasses that can be easily formed into complex shapes.
- Dan B. Miracle
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Letter |
Nanostructured high-energy cathode materials for advanced lithium batteries
Nickel-rich layered lithium transition metal oxides have been investigated as high-energy cathode materials for rechargeable lithium batteries because of their high specific capacity and relatively low cost. Such an oxide with high capacity (215 mA h g-1), where the nickel concentration decreases linearly whereas the manganese concentration increases linearly from the centre to the outer layer of each particle, is now proposed.
- Yang-Kook Sun
- , Zonghai Chen
- & Khalil Amine
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News & Views |
Customized cell microenvironments
Mimicking the complexity of the extracellular environment in synthetic hydrogels is hard. A simple two-photon excitation strategy to simultaneously immobilize multiple proteins with spatial control in three dimensions shows promise.
- Jennifer L. West
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