Single-walled nanotube, SWNT

Since their first discovery by Iijima in 1991 [1], carbon nanotubes have attracted a great deal of interest due to their very exciting properties. Their structure is characterized by cylindrically shaped enclosed graphene layers that can form co-axially stacked multi-wall nanotubes (MWNTs) or single-walled nanotubes (SWNTs). Like in graphite, carbon atoms are strongly bonded to each other in the curved honeycomb network but have much weaker Van der Waals-type interaction with carbons belonging to... 

Single-wall nanotubes (SWNTs), 12 232, 13 852, 26 737 Single-wall tanks, 24 296 Singular value decomposition, 6 28 S—I—N junctions, 23 821 Sinking solids, lifting and distribution of, 16 692-694 Sinoatrial node, 5 80... 

The aim here is to show the application of the simple theory of reactivity index along with some useful derivation of the theory in terms of resolving key issues. Some examples are provided to have an understanding of the applicability of this to industrial issues. Finally, a newest example of the application of reactivity index will performed to show the use of single-wall nanotube (SWNT) for gas sensing, and a... 

Carbon nanotubes can have one, two, or many sidewalls and are referred to as single-, double-, or multi-walled nanotubes (SWNT, DWNT, or MWNT). Nanotubes can be metallic, or semi-conducting depending on the chirality of the tube. Single-walled nanotubes (SWNT) are about 1 nm in diameter, and hundreds of nanometers long, whereas multi-walled nanotubes (MWNT) are like nested... 

There has been a vast increase in publications on carbon nanoparticles, such as Buckminster fullerene (C60) and single-walled nanotubes (SWNTs), since the late 1990s in response to the successful mass production methods of manufacturers... 

Figure 1.7. Schematic diagrams of the structure of (a) the 50 molecule and (b) a single wall nanotube (SWNT).

The first carbon nanotubes discovered in nature, such as those produced in Iijima s experiments, were multiwalled nanotuhes (MWNT). Multiwalled nanotuhes consist of a number of concentric carbon cylinders, a set of tubes nested inside each other. They are somewhat complex systems that are relatively difficult to study. An important step forward in research on carbon nanotuhes occurred in 1993, when scientists learned how to make single-walled nanotubes (SWNT). Using the simpler SWNTs, scientists have learned quite rapidly a great deal about the electrical conductivity, tensile strength, flexibility, toughness, and other physical properties of carbon nanotuhes. 

Abstract Raman spectra of film HiPCO carbon single-walled nanotubes (SWNTs) with... 

Coating by a thin layer of PPy has been realized on multiwalled nanotubes (MWNT) [29,91,93], well-aligned MWNT [85] and single-wall nanotubes (SWNT) [88], When MWNT are oxidized, their surface is covered with oxygenated functionalities, which can be used as anionic dopant of a PPy film electrodeposited on the MWNT [94], These films are notably less brittle and more adhesive to the electrode than those formed using an aqueous electrolyte as source of counterion. 

Thanks to their high aspect ratio, CNTs percolate to form a network at very low loading in the polymer matrix and lead to substantial enhancement of several functional properties, such as flame retardancy. Two different types of CNTs, single-walled nanotubes (SWNT) with... 

Carbodiimides are widely used to mediate the attachment of biomarkers to polypeptides. Examples include carbodiimides with ferrocenyl substituents. Also, peptides are covalently modified with ferrocenecarboxylic acid using EDCCl and N-hydroxy-succinimide to promote the coupling to surface lysines. They also mediate the attachment of substituents to single walled nanotubes (SWNTs) and multiwalled nanotubes (MWNTs). Also, microdots are attached to virus molecules using a water soluble carbodiimide. The attachment of viral DNA to gold particles is used in the manufacture of a new type of vaccine. 

The first important group of nanomaterials with application in sensors and biosensors field is represented by the CNTs [114], The nanodimensions, surface chemistry and electronic properties of CNT make this material an ideal candidate for chemical and biochemical sensing. There are two main types of CNTs (i) single-walled nanotubes (SWNTs) consisting of single graphite rolled seamlessly wrapped into a cylindrical tube (1-2 nm diameter) represents undoubtedly one of the more remarkable discoveries in the... 

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