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A four-level conductance switch can be created by using a scanning tunnelling microscope to remove a hydrogen atom from the central cavity of a porphyrin molecule.
Laser-based imaging can distinguish between semiconducting and metallic nanotubes in vitro and in vivo, offering a way to study the interactions of carbon nanostructures in biological systems without the use of labels.
Nanodiamonds have excellent mechanical and optical properties, high surface areas and tunable surface structures. This article reviews the synthesis of nanodiamonds and their use in a variety of applications including drug delivery, tissue engineering and nanocomposites.
Lipid monolayers and bilayers can stabilize networks of water droplets inside larger drops of oil to create structures that could have a range of applications.
The cycle of cell birth, growth and division can affect the uptake and dilution of nanoparticles in cells, suggesting that the evolution of nanoparticle dose within a cell population is linked to the life cycle of cells.
DNA molecules have been used to build a variety of novel nanoscale structures and devices over the past 30 years. This article reviews the challenges facing the field of structural DNA nanotechnology and outlines promising potential applications in areas such as molecular and cellular biophysics, energy transfer and photonics, and diagnostics and therapeutics for human health.
The observation that charges flowing through one quantum wire can drag charges in a second, unconnected wire either forwards or backwards requires a re-interpretation of Coulomb drag.
Electrons from the tip of a scanning tunnelling microscope can be used to drive and monitor the directional rotation of a single molecule on a metal surface.
Risk assessments of products containing nanomaterials require both the materials in the products and the materials emitted during their use to be analysed so that realistic exposures can be determined.