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See additional applications in: Optical properties of carbon nanotubes. Carbon nanotube photoluminescence (fluorescence) can be used to observe semiconducting single-walled carbon nanotube species. Photoluminescence maps, made by acquiring the emission and scanning the excitation energy, can facilitate sample characterization.
Polysaccharides have been successfully been used to modify carbon nanotubes forming stable hybrids. [48] To make carbon nanotubes soluble in water, phospholipids such as lysoglycerophospholipids have been used. [49] The single phospholipid tail wraps around the carbon nanotube, but the double tailed phospholipids did not have the same ability.
Jack Andraka used carbon nanotubes in his pancreatic cancer test. His method of testing won the Intel International Science and Engineering Fair Gordon E. Moore Award in the spring of 2012. [221] The Boeing Company has patented the use of carbon nanotubes for structural health monitoring [222] of composites used in aircraft structures. This ...
A nanotube is a nanoscale cylindrical structure with a hollow core, typically composed of carbon atoms, though other materials can also form nanotubes. Carbon nanotubes (CNTs) are the most well-known and widely studied type, consisting of rolled-up sheets of graphene with diameters ranging from about 1 to tens of nanometers and lengths up to ...
Later that year the team used a composite of graphite and metal catalyst particles (the best yield was from a cobalt and nickel mixture) to synthesize single-walled carbon nanotubes. [7] The laser ablation method yields around 70% and produces primarily single-walled carbon nanotubes with a controllable diameter determined by the reaction ...
Many textbooks describe carbon nanotubes (CNTs) in easily understood terms: carbon nanotubes are tubular structures made entirely of rolled-up layers of graphene. [9] [10] The diameters of CNTs ranges from about one nanometer to tens of nanometers, while their lengths can be up to centimeters, much greater than the diameters.
The nanofocusing technique can create a nanometer-scale "white" light source at the tip apex, which can be used to illuminate a sample at near-field for spectroscopic analysis. The interband optical transitions in individual single-walled carbon nanotubes are imaged and a spatial resolution around 6 nm has been reported. [28]
The researchers used the same method to eliminate transistors in which the carbon nanotubes were unswitchable conductors (thus nicknamed "metallic" nanotubes). The researchers applied these refinements to a wafer with 197 8-micrometer (8,000 nanometer) carbon nanotube based transistors on a silicon oxide substrate, leaving 178 usable transistors.