The Vienna team sent a collimated beam of carbon-60 molecules through a slit made of silicon nitride and detected the interference pattern by ionizing the molecules with a laser and then counting the ...
Only two other methods have previously been used to manufacture quantum dots: electron beam lithography and epitaxy. Lithography is a top down approach in which the beam defines the dot pattern, where...
The medium is made of nanocrystals of zinc sulphide doped with samarium. Although the nanocrystals are only 3 nanometres long, they clump together into larger particles to form a powder that can be us...
The fantastic progress in the miniaturization of electronic devices that has taken place in the past few decades has largely been made possible by perfecting a century-old technique called lithography...
Banin and co-workers used quantum dots made of indium arsenide, covered with a nonconducting barrier of hexane dithiol molecules and linked to a conducting gold film. The radius of the nearly spherica...
The new technique works because the salt water conducts electricity. As the voltage on the tape changes, electrical charge carriers are injected into the nanotubes. These form electrolyte ions near th...
Buckyballs, nanotubes and related structures have great potential for storage applications because their small size offers the possibility of high switching speeds and low power consumption. However, ...
The technique uses an iron-silica catalyst created by coating a quartz plate with an iron-silica solution. Once the solution dries it cracks into a film 30-50 microns thick. After the substrate is hea...
Carbon nanotubes – which can be thought of as a rolled-up graphite sheet – were discovered in 1991. One way to produce large quantities of nanotubes is to place two water-cooled carbon ele...
The biggest challenge in making a single-molecule device is achieving electrical contact between individual molecules. Now new techniques that vaporize carbon to form nanotubes, and deposit material o...
