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posted by Fnord666 on Tuesday August 18 2020, @09:28PM   Printer-friendly
from the very-cool dept.

No limit yet for carbon nanotube fibers:

The Rice lab of chemical and biomolecular engineer Matteo Pasquali reported in Carbon it has developed its strongest and most conductive fibers yet, made of long carbon nanotubes through a wet spinning process.

[...] "The goal of this paper is to put forth the record properties of the fibers produced in our lab," Taylor said. "These improvements mean we're now surpassing Kevlar in terms of strength, which for us is a really big achievement. With just another doubling, we would surpass the strongest fibers on the market."

The flexible Rice fibers have a tensile strength of 4.2 gigapascals (GPa), compared to 3.6 GPa for Kevlar fibers. The fibers require long nanotubes with high crystallinity; that is, regular arrays of carbon-atom rings with few defects. The acidic solution used in the Rice process also helps reduce impurities that can interfere with fiber strength and enhances the nanotubes' metallic properties through residual doping, Dewey said.

"The length, or aspect ratio, of the nanotubes is the defining characteristic that drives the properties in our fibers," he said, noting the surface area of the 12-micrometer nanotubes used in Rice fiber facilitates better van der Waals bonds. "It also helps that the collaborators who grow our nanotubes optimize for solution processing by controlling the number of metallic impurities from the catalyst and what we call amorphous carbon impurities."

The researchers said the fibers' conductivity has improved to 10.9 megasiemens (million siemens) per meter. "This is the first time a carbon nanotube fiber has passed the 10 megasiemens threshold, so we've achieved a new order of magnitude for nanotube fibers," Dewey said. Normalized for weight, he said the Rice fibers achieve about 80% of the conductivity of copper.

"But we're surpassing platinum wire, which is a big achievement for us," Taylor said, "and the fiber thermal conductivity is better than any metal and any synthetic fibers, except for pitch graphite fibers."

I wonder how useful the thermal conductivity would be in cooling computer chips?

Journal Reference:
Lauren W. Taylor, Oliver S. Dewey, Robert J. Headrick, et al. Improved Properties, Increased Production, and the Path to Broad Adoption of Carbon Nanotube Fibers, Carbon (DOI: 10.1016/j.carbon.2020.07.058)


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  • (Score: -1, Spam) by Anonymous Coward on Tuesday August 18 2020, @11:09PM

    by Anonymous Coward on Tuesday August 18 2020, @11:09PM (#1038584)

    Marissa Van Eck FAKENAME NIGGER CUNT Azuma Hazuki: So "that was NOT me posting" https://soylentnews.org/comments.pl?noupdate=1&sid=37033&page=1&cid=985641#commentwrap [soylentnews.org] which YES, you said when you LIBELED me publicly BEFORE it with YOU saying "So that's a "yes" to schizophrenia/schizoaffective disorder and a "no" to "am taking meds for said disorder" LIBELING ME then...?" per YOUR https://soylentnews.org/comments.pl?noupdate=1&sid=37033&page=1&cid=982854#commentwrap [soylentnews.org] you stupid pitiful FAKENAME fuck online LIAR piece of fucking SHIT NIGGER?

    OR

    Was it when I GOT YOUR REAL NAME & found you are a satanist/anti-god HERE https://redeeminggod.com/sermons/luke/luke_7_36-50/#comment-269796 [redeeminggod.com] also which most ALL you "LEFTIST" LOSER weirdos usually are (which YES, in THIS other exchange "Why do you assume that you finding discussion threads on other sites with me in them will scare me?" quoted from https://soylentnews.org/comments.pl?noupdate=1&sid=38720&page=1&cid=1028402#commentwrap [soylentnews.org] you DID admit FINALLY to saying it was you - ESPECIALLY AFTER dozens of doctors RECENTLY seconded me on Hydroxychloroquin + Zinc (& Vitamin D3 imo along w/ other things I noted that are anti-viral + antibacterial like RAW GARLIC too)).

    Do me a favor - DENY ANY OF THOSE, please & I will continue PROVING YOU ARE A NIGGER SHITBAG LOSER, devil... as I already DID here https://soylentnews.org/comments.pl?noupdate=1&sid=38720&page=1&cid=1028211#commentwrap [soylentnews.org]

    The TRUE BEAUTY of SATANIST FUCKS like YOU (antigod assholes)? TRUTH & FACT DESTROYS LIBELOUS DEVILS LIKE YOU - just like I did you & OTHER AHOLES who doubted what I wrote on what is NOW PROVEN TRUE by DOCTORS, admitted in mainstream media etc. (as I showed in those links' exchanges above easily) & especially LATELY by DOZENS of doctors (I have proof from pros - NOT LIBEL like you did to me PUBLICLY & I can still FRY YOU FOR IT FUCKER, live in fear fuck) MINUS any psych pros backing you.

    SAY 1 THING, YOU STINKING LIBELOUS NIGGER FUCK & I will CONTINUE LEVELLING YOU PUBLICLY with facts - not libel as you tried on me, stupid "Marissa von DUMBO", lol - please, say 1 thing & the BEATING on you, PUBLICLY will continue in this thread where you will have a HELL of a TIME "downmod burying it" via downmod brigades doubtless ONLY yourself via multiple sockpuppet accounts etc. (downodding to HIDE it? FORGET IT vs. me - everyone sees you @ it now, lol - thanks, just as I SAID "your kind", demonic SWINE/antigod LOSERS, always do).

    WHY SHOULD YOU FEAR LIBELING ME PROJECTING IT NOW, TRYING TO HIDE IT TOO?

    TOUGH HIDING YOU LIED about LIBELING ME, especially via INHERENTLY DAMAGING STATEMENTS libeling me as you did see GOLDWATER RULE below too fuckface CUNT you are (wikipedia proof https://soylentnews.org/comments.pl?noupdate=1&sid=37033&page=1&cid=985366#commentwrap [soylentnews.org] & you said "No jury or judge would back it" here https://soylentnews.org/comments.pl?noupdate=1&sid=37033&page=1&cid=985353#commentwrap? [soylentnews.org] Ok - like I said earlier here which you TRIED TO DOWNMOD HIDE as I knew you HAVE to (everyone sees it anyhow) - TRY ME FUCKER - say 1 thing you COWARDLY STUPID LITTLE FUCK & we'll SEE what happens to you, fuckface CUNT you are).

    As I said "DO YOU WANT TO BE SUED" for breaking the GOLDWATER RULE? See here again https://soylentnews.org/comments.pl?noupdate=1&sid=37033&page=1&cid=985329#commentwrap [soylentnews.org] for YOUR (& everyone else's) reference of YOUR LIBEL of myself

    APK

    P.S.=> Oh, I am going to have a FIELDDAY on YOUR ASS fucker - catching you not ONLY IN LIES above, but also in the fact you are a GODLESS fucking LOSER - come on, say something, question the above where you LIED fucker ("it was not me saying it" but it WAS in those links calling me a nutcase essentially when YOU SAID YOU DID NOT (because it IS grounds for SUING THE LIFE OUT OF YOUR WORTHLESS ASS because your statements are NOT BACKED BY actual psychiatric pros in professional psychiatric grounds LIBELING ME)) - oh, you are NEVER going to LIVE THIS DOWN & believe you me - I am going to MAKE SURE you don't - live with your HUMILIATION loser... apk

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