Individual silver atoms are pulled out from a nanosized silver cluster on a Ag(111) surface at 6 K using a scanning tunneling microscope tip. Just by approaching the tip close to a protruding part of the cluster, the binding energy of the topmost cluster atom is greatly reduced. When the STM-tip laterally moves, the atom breaks the bond with the neighboring atoms within the cluster, and follows the tip trajectory. This process involves manipulation of atom along rough terrains of the 3-D cluster surface.
A debate about the feasibility of Molecular Manufacturing. Can molecular assemblers be developed to create new materials, new devices, and even macroscopic objects? This animation is part of a museum exhibit developed for the Children's Museums.
An example of a carbon nanotube gear and shaft operation with a powered gear. The gearshaft is a carbon nanaotube which may be just 1 to 10 nanometers in diameter. Benzyne molecules (as teeth) are attached to carbon nanotubes (shafts) to form gears that can operate at GHz frequencies.
An example of carbon nanotube gear rotation. The gearshaft is a carbon nanaotube which may be just 1 to 10 nanometers in diameter. Benzyne molecules (as teeth) are attached to carbon nanotubes (shafts) to form gears that can operate at GHz frequencies. This clip shows rotation speeds of 50/70/100 rot/ns in a vacuum.
IBM is applying a breakthrough self-assembling nanotechnology to conventional chip manufacturing, borrowing a process from nature to build the next generation computer chips. The natural pattern-creating process that forms seashells, snowflakes, and enamel on teeth has been harnessed by IBM to form trillions of holes that are used to create insulating vacuums around the miles of nano-scale wires packed next to each other inside computer chips.
An animation of one possible version of a nanomanipulator array assembler system: The upper platter holds bulk-deposited molecules or moieties. An array of massively-parallel simple manipulators removes the molecules from the upper platter and adds them to devices being assembled on the lower platter. Different areas of the feedstock platter might have different kinds of molecules, such that several assembly steps can be carried out before having to change out the upper platter. The conical roller moves radially, while the upper platter moves up and down, to access these different areas. The STM tips would have some ability to compensate for the slippage of the roller as the tip reaches for its target.
The Gracias Lab at Johns Hopkins has developed a relatively easy, precise, and cost-effective process by which the 2D templates of semi-tethered "faces" can self-assemble into controlled 3D structures by utilizing the natural phenomena of surface tension. This video highlights the development, manufacturing process, and proposed functions (cell encapsulation devices and controlled drug delivery carriers) of our self-assembling nanoliter containers.
On the nanoscale, it is extremely difficult and expensive to fabricate analogs of macroscale engineering, such as grippers. Drawing inspiration from biological fabrication in nature, engineers are seeking to self-assemble structures from the bottom up. The Gracias Lab at The Johns Hopkins University has developed a relatively easy, precise, and cost-effective process by which the 2D templates of semi-tethered "faces" can self-assemble into controlled 3D structures by utilizing the natural phenomena of surface tension as well as thin-film stress.