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Condensed-matter physicists are steadily closing in on exotic excitations known as Majorana modes that could advance both fundamental science and quantum computing.
In recent years, there has been a proliferation of models for spin-dependent electronic processes in organic semiconductors. Researchers aiming to utilize these processes for new organic spintronics devices should focus more on scrutinizing these models experimentally by embracing spectroscopy.
The conductance of an electronic nanodevice can be switched by an applied current between two well-defined values, which correspond to atomic configurations that differ as a result of the rearrangement of a single atom.
Electromigration is used to rearrange single atoms in an atomic-sized metal contact and to switch its conductance between two well-defined values, enabling memory device functionality.
Bright luminescence from upconversion nanocrystals can be achieved by combining high-excitation irradiance with a high activator concentration. The enhanced brightness allows a single nanocrystal to be tracked, which can be used in bioimaging applications, for example.
Nanoscale superconducting quantum interference devices (SQUIDs) fabricated on the apex of a sharp tip can provide spin sensitivities that are nearly two orders of magnitude better than previous SQUID sensors.
A combination of self-assembly and jet printing can be used to create block copolymer films with complex structures and tunable periodicities across a large substrate.
Three-dimensional films — comprising polymeric phases of different molecular weights and compositions — are arranged in complex hierarchical patterns and used for wafer-scale patterning.
The local curvature of dumbbell-shaped nanoparticles can be used to control the ionization state of a molecular layer adsorbed on their surfaces and the self-assembly patterns of the particles.
The chemical properties of a molecular monolayer on the surface of a non-spherical nanoparticle depend on its local curvature; an effect that can be exploited to drive the self-assembly of these nanoparticles into different structures.
Excitonic valley quantum coherence is optically generated and detected by polarization-resolved photoluminescence spectroscopy in the monolayer semiconductor WSe2.