You through the layers of oligo nucleotide (GT (Poly orderly  structure on SWCNTs turned too high and  cause the separation of nanotubes, metal / semiconductor  -based electrical properties of the nanotube diameter  is (PhD Nano _ microelectronics) 

Researcher  and author: Dr.   (   Afshin Rashid)



Note: Many biomolecules have the potential to differentiate between DNA of a particular type of nanotube. Selective diameter-dependent scattering of SWCNTs is achieved by using Chitosan polymer and polyethylene glycol oligomeric polymer (PEG) through torsion adsorption. 

The spiral complexity (mono-no-Falotin Falvin) on  nanotubes is very interesting. This material can  selectively separate 85% of nanotubes (6,8) from a nanotube sample with a wide diameter distribution. DNA has been widely used to separate specific types of nanotubes by non-covalent twisting  Using  single-stranded DNA, nanotubes can be dispersed in solution  , and how  DNA is twisted selectively depends on the specific sequence  of the DNA strand. You through the layers of oligo nucleotide (GT (Poly orderly  structure SWCNTs very high on the turns and  cause separation of nanotubes, metal / semiconductor  -based electrical properties of the nanotube diameter  is. After  the interaction between the DNA and nanotubes it'll be done. The DNA separation method is  used to disperse  the nanotubes. During  which nanotubes (5,6) were enriched from nanotubes (3,10)  Enrichment of metal nanotubes increases  as the length of DNA decreases. A method of isolating  , purifying nanotubes One by  twisting DNA with chromatography depends on  the size   of the sequence of DNA, of  certain of the nanotubes from the mixture separates and  does this by chromatography were integrated  as the semiconductor main Unique chirality  is separated from a high-purity synthetic nanotube mixture   That the structural order of the SWCNT-DNA hybrid  causes structure recognition SWCNTs  can reveal theoretical approximations that  the purine-pyrimidine pattern has been identified as a sequence pattern  that can  form a hydrogen bond to form a two-dimensional plate  and, as a regular three-dimensional tube  , can selectively form on  nanoparticles. Wrap the pipes.



Isolated (5,10)  nanotubes (TTT3)  have been sequenced using DNA with T sequence  , which is very efficient for use  in FET equipment. Octadecylamine selectively interacts with semiconductor SWCNTs  , provided  the SWCNTs are oxidized. On the contrary, the  use of propyl amines Vayzv propyl amines in  THF, selective adsorption on metallic SWNTs do  it. This causes the solution to condense from  the metal nanotubes. Different colors of  nanotube suspensions are observed,  indicating the high purity of specific types of SWCNTs. Amines can also be attached to SWCNTs via covalent bonding  , but in this case there is no  selectivity for metal or semiconductor SWCNTs  .



Conclusion : 

We conclude that different surfactants have been used to classify  SWCNTs based on chirality  Selective separation of  SWCNTs is performed using added salt SDS solution  The diameter- dependent  and chiral bonding applies to the general surfactants  (sodium dicryl sulfate 10), (sodium  dicyl benzene 11) sulfonate, and (sodium covalent 12)  in aqueous solution.

Researcher  and author: Dr.   (   Afshin Rashid)

PhD in Nano-Microelectronics