Volume 7 Issue 4, April 2012

A single-atom transistor has been made by positioning a phosphorus atom between metallic electrodes, also made of phosphorus, on a silicon surface.

The distribution of electric charge within a single naphthalocyanine molecule has been revealed by researchers using a combination of three types of microscopy and theoretical modelling.

Chemically modifying solid-state nanopores with a single nitrilotriacetic acid receptor allows the reversible detection of single proteins.

A motor protein can be made to walk in either direction along a filamentous track by adjusting the concentration of calcium ions in the surrounding solution.

This article reviews the development of multifrequency force microscopy and examines its application in studies of proteins, the imaging of vibrating nanostructures, measurements of ion diffusion, and subsurface imaging in cells.

Kelvin probe force microscopy can reveal the distribution of charge within a single naphthalocyanine molecule.

A tunable concentration of localized magnetic impurities is inserted into a metal from a molecular monolayer, which allows many-body phenomena in magnetic impurity–host systems to be studied at unprecedented impurity concentrations.

Super-resolution fluorescence microscopy shows that the catalytic reactivity of a single gold nanorod varies along its sides, even though the same side facets span its length.

A single phosphorus atom is deterministically positioned between source, drain and gate electrodes within an epitaxial silicon device architecture to make a single-atom transistor.

Quantum bits defined in an Aharonov–Bohm ring are transported over long distances while being controlled with electric fields.

The direction of motion of an engineered actomyosin motor can be reversibly controlled using calcium.

Solid-state nanopores that are chemically modified with nitrilotriacetic acid receptors are used to study a variety of different proteins.

Chickens acutely exposed to polystyrene nanoparticles are less efficient at absorbing iron across the epithelial cells of their intestines than chickens chronically exposed and those that are not exposed at all.