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The indiscriminate inhalation of drugs during cancer treatment can adversely affect healthy tissues that surround the tumour. New studies in mice show that tiny aerosol droplets can be guided to the right spot in the lung with an external magnet.

The diameter and chiral angle of single-walled carbon nanotubes made with Co–Mo catalysts depends on the chemical composition and pressure of the carbon precursors

Refridgeration has been demonstrated in a so-called 'heat transistor' comprising superconducting leads attached to a copper metal island

Electron transport through a C₆₀ molecule can be tuned mechanically when the molecule is suspended in a break junction between two nanowires

Very small amounts of fluid can be precisely injected into cells using an electrochemical syringe

An array of electrodes made of carbon nanofibres can stimulate and record electrical activity from slices of a mouse brain

Molecular dynamics simulations suggest that the pumping rates of nanoscale molecular propellers vary depending on the properties of their blades

An ordered array of silicon–germanium shells shows enhanced light emission compared with an unpatterned sample

A new stable and continuous nanosized laser could revolutionize optical electronics

By attaching a range of chemically modified nanoparticles to a microfabricated array of tipless cantilevers, large combinations of chemical interactions can be measured

The chemical reactivity of organic molecules can be reduced significantly by confining them inside carbon nanotubes

A non-volatile memory device based on the relative magnetization direction of two ferromagnetic semiconducting nanobars has been demonstrated

Two-dimensional arrays of living bacteria have been printed on substrates with single-cell resolution

A new approach to making a biosensor with a field-effect transistor provides high sensitivity with simple processing by introducing a vertical nanogap into the device structure.