User talk:Ttss16

Reversion of Carbon Nanotube reversion
Hi, sorry, but I had to revert your wholesale and unexplained reversal of my edits to the carbon nanotube article. I believe that I explained the reasons for my edits, starting with the rule that a Wikipedia article should refer to the topic in the singular unless there is a good reason for doing otherwise. My version of the introduction is surely not perfect, but the one you reverted to is objectively much worse. (And "above" or "below" do not make sense when talking about graphene. That is not a meaningful way to explain chirality of nanotubes.) All the best, --Jorge Stolfi (talk) 12:28, 30 July 2020 (UTC)

Comments and Reasons for Changes to the Introduction
Hi, although your changes to and comments on the previous introduction uncover some problems they introduce others. Therefore, rather than attempting to update your version, I have first restored the earlier version of the introduction and then edited it to address your concerns without introducing more problems. I have also made a few other changes including adding dates to most of the references in the introduction. Remarks on your comments and revisions as well as edits I made to the previous version are given below. Sorry I didn’t provide my reasons for my earlier rollback but they were fairly detailed and didn’t have time to write them up before you rolled things back. I should have written up my comments and reasons first.

The earlier introductory sentence is about a single topic, carbon nanotubes. The carbon nanotube page has long included references to SWNTs, MWNTs, and carbon tubes of undetermined wall structure. The previous introductory sentence succinctly captures all of these nanotube structures. It is too early at this point to begin specifying their wall structure, unless e.g. you want to exclude Radushkevich and Lukyanovich’s discovery of 50 nm diameter carbon tubes of undetermined wall structure, which would be wrong. Thus, there is good reason for retaining this single sentence paragraph.

The previous introduction went from the simplest (SWNTs) to more complex (MWCNTs) to finally tubes of undetermined carbon wall structure, each in a separate paragraph. This makes good sense as it promotes clear understanding but not surprisingly requires reverse chronological ordering. However, such ordering might mislead some casual readers into thinking SWNTs were discovered first. To avoid such a conclusion, I have inserted some dates in the text in editing the earlier version. Also, it is only proper to consider SWNTs as intermediate between fullerene cages and graphene. They all have single walls. I was tempted to combine the 2nd and 3rd paragraphs in the previous version, as both refer to SWNTs. However, I decided no to do this in favor of enhancing readability on small screens.

To indicate that CNTs are molecular scale is at best confusing without specifying what is meant by molecular scale. SWNTs exhibit nanometer scale diameters but their lengths can extend to millimeters or longer. It is also confusing to refer to a carbon nanotube as a single molecule. Would you refer to elemental diamond or graphene as a single molecule? It is good to stay away from such statements in the introduction as was originally done

It is redundant to use the term “theoretical construct.” This was already made clear through the statement “… single-wall carbon nanotubes can be thought of as … .” in the earlier version. To make this even clearer I have replaced “can be thought of” by “idealized.”

It is too far afield to point out in the introduction particular carbon nanotube end terminations—many different ones have been reported in the literature. Simply stating that for many purposes end effects are neglected is sufficient in the introduction, as was done in the earlier version. I have also dropped the reference to rare half-meter long tubes as it doesn’t really add anything in this context and there are many earlier references reporting high aspect ratio tubes.

In discussing the symmetry properties of a materials lattice, it is almost always assumed that their relevant dimensions are infinite. Perhaps, one should make this explicit in touching upon the symmetries of SWNTs in a Wikipedia page, which has now been done in editing the earlier version.

It was a clear oversight in the earlier version not to state that there are semiconducting nanotubes prior to mentioning some potential carbon nanotube applications. This problem has been corrected in editing the earlier version. Many properties of SWNTs do not depend on handiness but some do. For example, carbon nanotubes of different handiness have been separated using single strand DNA segments. Hence, one should be specific about the particular property one is writing about, as was done in the prior version. Also, it is more informative to state most SWNTS are chiral as was done earlier as opposed to stating some SWNTs are chiral.

Depending on perspective, some might think that the statement at the end of the prior introduction is wrong. Therefore, I have modified it to read—These electrical properties, however, do not depend on whether the hexagon lattice is rolled from its back to front or from its front to back and hence are the same for the tube and its mirror image. This wording is basically a paraphrase of the description given in Ref. 9. Ref. 9 is one of the pioneering papers on carbon nanotubes.

Finally, Iijima and Ichihashi and Bethune et al. didn’t (re)discover SWNTs in 1991. They were the first to report them in the refereed literature and that was in 1993 not 1991. Ttss16 (talk) 22:58, 23 August 2020 (UTC)

Carbon nanotube reverts
Learn to use the article talk page, and stop using the revert button. Your preferred text for the lead of this article (that you've repeatedly reinstated over the years) is poorly-written. You don't have a veto over article contents, and if you continue to revert without properly engaging in debate with your fellow editors then you'll be excluded from future editing. Chris Cunningham (user:thumperward) (talk) 19:35, 11 March 2022 (UTC)