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The use of asymmetrically biased quantum point contacts in semiconductor heterostructures paves the way for the realization of an all-electric spin field-effect transistor.
Two-dimensional magnetic resonance imaging of hydrogen in organic samples with a resolution of 12 nm can be achieved by using the spin of a nitrogen–vacancy centre in diamond as a sensor.
A magnetic resonance imaging probe that binds specifically to neurotoxic amyloid-beta oligomers can potentially be used for early detection of Alzheimer's disease.
The spin dynamics of a nanomagnet assembled from three iron atoms can be tuned by atomic exchange coupling with the magnetic tip of a scanning tunnelling microscope.
A high-throughput nanosensor based on a gold nanoparticle and fluorescent proteins allows mechanisms of chemotherapeutic drugs to be screened in minutes, offering a tool for expediting research in drug discovery and toxicology.
The stepwise stochastic motion of an individual organoarsenic(III) molecule along a linear track of thiols can be monitored in real time within a protein nanopore.
A two-step sandwich assay, which can be both mechanically and optically detected, identifies cancer biomarkers in serum with high sensitivity and selectivity.
Experiments with conducting atomic force microscopy provide a clear demonstration of long-range charge transport in G-quadruplex DNA molecules, and allow a hopping transport model to be developed that could also be applied to other conductive polymers.
Advanced measurement techniques combined with a tightly controlled noise environment have enabled the creation of carbon nanotube-based mechanical resonators with quality factors of up to five million.