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Optical microcavities have been fabricated in single-crystal diamond and tuned into resonance with the zero phonon line of an ensemble of silicon-vacancy colour centres, which results in an enhancement of spontaneous emission.
Indirect DNA damage to cells cultured below a cellular barrier caused by nanoparticles occurs across barriers containing two or more layers, but not monolayer barriers, suggesting that the thickness of the cell barrier is important in signalling.
A nanoscale optomechanical resonator in a double-well potential has been excited into the high-amplitude regime, and then optically cooled to a specific at-rest configuration, which allows it to be operated as a non-volatile memory element.
Dynamic internal gradients of ions and electrons can be used to direct electric currents through films of charged metal nanoparticles, and allows current rectifiers, switches and diodes to be created.
A new device made up of a nanochannel and two microchannels can deliver well-defined amounts of molecules directly into cells without affecting cell viability.
Thin films of strongly coupled PbSe quantum dots exhibit light-induced charge generation with a yield of one electron and one hole per photon over a wide temperature range.
The three-way junction domain of the phi29 bacteriophage can be assembled from three pieces of RNA oligomers to form stable multifunctional nanoparticles that are useful for the treatment of different diseases.
Iron oxide and zinc oxide core–shell nanoparticles can deliver antigens into dendritic cells and also act as an imaging agent for cancer immunotherapy.
A biological nanopore is used to detect circulating microRNA in the plasma of lung cancer patients, offering a non-invasive method to screen and diagnose diseases.
Thin graphene oxide windows can be used in X-ray photoelectron spectroscopy of environmental cells by virtue of their transparency to low-energy electrons.
A silicon-on-insulator photodetector substrate can be used to produce absolute and quantitative maps of nanoscale optical antenna resonances in the near field.
Inorganic nanoparticles with non-uniform size distributions can spontaneously assemble into uniformly sized supraparticles with core-shell morphologies.
Magnetic nanoparticles encapsulated inside liposomes can deliver drug cargo, target tumours and their microenvironment, and simultaneously act as magnetic resonance contrast agents.
A combination of calculations and electrical measurements on oligo-porphyrin wires in single-molecule junctions strongly suggest that the mechanism of long-range charge transport is phase-coherent electron tunnelling.
The strength of the interaction between the spin state and orbital motion of electrons in a semiconducting quantum dot can be controlled by electrical gates.
Fluorescent aptamers covalently bound to the membrane of mesenchymal stem cells can detect signalling molecules in the cell environment, offering a new tool to study cell functions in tumours and inflammatory environments.
Large-area, high-mobility graphene with controlled stacking can be synthesized with a solution-phase approach that allows control over the number of layers.
Nanoparticles with a gold core and a gold shell separated by a hollow and uniform one-nanometre gap and nanobridges generate a highly stable and reproducible SERS signal.