1 - 10 of 13 articles
The spiking phenomena associated with neural activity are characterized by an impressive degree of efficiency. The fabrication of a neuristor consisting of nanoscale components represents a step towards implementing such devices in integrated circuit applications.
Solid-state spin qubits offer promise as building blocks for quantum computers. Now, efficient quantum control is demonstrated over hybrid nuclear–electronic qubits in bismuth-doped silicon, as a consequence of the strong hyperfine interactions in this system.
A critical component for chip-scale integrated photonics would be a non-reciprocal optical waveguide allowing light to travel in only one direction while reflecting it in the opposite one. Inspired by concepts of parity-time-symmetric quantum theories, a periodically modulated dielectric...
Emulating the spiking phenomena associated with neural activity in technological devices offers the promise of drastically improving their efficiency and scale. The fabrication of a neuristor that consists of nanoscale Mott memristors provides a step towards making such devices practical for...
The poor thermal conductance of interfaces is a significant bottleneck to the integration of nanoscale devices in a range of applications. Now, the thermal conductance at metal/dielectric heterointerfaces is significantly enhanced by the introduction of an organic nanomolecular monolayer.
Determining crystal structures from diffraction experiments can be labour intensive and prone to errors. A hybrid approach combining experimental diffraction data, statistical symmetry information and first principles-based algorithmic optimization is now proposed to automatically solve crystal...
The exterior surface of cell membranes in eukaryotes is surrounded by glycans. It is now found that the spatial configuration of these polysaccharide molecules controls the phase behaviour of multiphase lipid membranes—either by stabilizing ordered lipid domains or by suppressing macroscopic...
Iron pnictides are layered high T
c superconductors with moderate material anisotropy and thus Abrikosov vortices are expected in the mixed state. Yet, we have discovered a distinct change in the nature of the vortices from Abrikosov-like to Josephson-like in the pnictide superconductor...
Hydrogen embrittlement in metals has posed a serious obstacle to designing strong and reliable structural materials for many decades, and predictive physical mechanisms still do not exist. Here, a new H embrittlement mechanism operating at the atomic scale in α-iron is demonstrated. Direct...
Photoconversion in planar-heterojunction organic photovoltaic cells (OPVs) is limited by a short exciton diffusion length (L
D) that restricts migration to the dissociating electron donor/acceptor interface. Consequently, bulk heterojunctions are often used to realize high efficiency as these...
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