Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
and JavaScript.
It is possible to sort polydisperse mixtures of single-walled carbon nanotubes to produce samples enriched in any of ten different (n,m) structures, and to separate the mirror-image isomers of seven different structures.
Single holes can be confined in a SiGe quantum dot, allowing a range of spin-dependent quantum phenomena to be explored, and a resonant supercurrent transistor to be demonstrated.
Reducing the particle size of poorly soluble iron and zinc compounds into the nano range increases their bioavailability in rats without accumulation in tissues; these nanocompounds can be used for food fortification without changing the colour of food.
A nanoscale set–reset machine — the simplest logic circuit with a built-in memory — that operates at room temperature can be created by attaching a silicon nanoparticle to the inner pore of a protein.
In vitro studies using three-dimensional tumour models and mathematical simulation show that positively charged particles are better for delivering therapeutics to viable cells, whereas negative particles are better when deep tissue penetration is required.
Individual nanocrystals of TiO2 have been imaged with a resolution of 70 picometres by a combination of electron diffractive imaging and high-resolution transmission electron microscopy.
Arrays of single-walled carbon nanotubes can detect hydrogen peroxide from live cells in real time, providing a new tool to understand signalling of reactive oxygen species in cells.
Nanoscale filaments with a Magnéli structure are shown to be responsible for resistance switching in thin films of TiO2, and the properties of the filaments are directly observed during the switching process.
Steps in the electrostatic potential at domain walls in a ferroelectric material give rise to a new kind of photovoltaic effect that produces voltages significantly higher than the bandgap of the material.