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A carbon nanotube field-effect transistor (CNTFET) is a field-effect transistor that utilizes a single carbon nanotube (CNT) or an array of carbon nanotubes as the channel material, instead of bulk silicon, as in the traditional MOSFET structure. There have been major developments since CNTFETs were first demonstrated in 1998.
Further studies, such as one conducted in 2008, revealed that individual CNT shells have strengths of up to ≈100 gigapascals (15,000,000 psi), which is in agreement with quantum/atomistic models. Since carbon nanotubes have a low density for a solid of 1.3 to 1.4 g/cm 3 , its specific strength of up to 48,000 kN·m·kg −1 is the best of ...
Hybrid interconnects that employ CNT vias in tandem with copper interconnects may offer advantages in reliability and thermal-management. [5] In 2016, the European Union has funded a four million euro project over three years to evaluate manufacturability and performance of composite interconnects employing both CNT and copper interconnects.
CNT lengths range from less than 100 nm to 0.5 m. [1] Individual CNT walls can be metallic or semiconducting depending on the orientation of the lattice with respect to the tube axis, which is called chirality. MWNT's cross-sectional area offers an elastic modulus approaching 1 TPa and a tensile strength of 100 GPa, over 10-fold higher than any ...
A single-walled carbon nanotubes (SWCNT) can be envisioned as strip of a graphene molecule (a single sheet of graphite) rolled and joined into a seamless cylinder.The structure of the nanotube can be characterized by the width of this hypothetical strip (that is, the circumference c or diameter d of the tube) and the angle α of the strip relative to the main symmetry axes of the hexagonal ...
The main advantages of VANTAs are the nanosize of the CNT-sensing element and the corresponding small amount of material required for a detectable response. The well-aligned CNT arrays have been employed to work as ribonucleic acid sensors, enzymes sensors, DNA sensors, and even protein sensors. Similar VANTAs of MWNTs, grown on platinum ...
Fluidized bed reactor is the most widely used reactor for CNT preparation. Scale-up of the reactor is the major challenge. [19] [20] CVD is the most widely used method for the production of carbon nanotubes. [21]
Conductive CNT coatings have recently become a prospective substitute based on wide range of methods including spraying, spin coating, casting, layer-by-layer, and Langmuir–Blodgett deposition. [ 9 ] [ 26 ] [ 27 ] [ 28 ] The transfer from a filter membrane to the transparent support using a solvent or in the form of an adhesive film is ...