Ex-News Junkie
Hypothetical technique for continuous room temperature
Fri Dec 1, 2017 4:56pm

production of defect free graphene film by bombarding a BAM-coated nickel cylinder with supersonic buckyballs or reduced graphene oxide droplets carried by standard atmospheric gas emitted from a circular array of de Laval nozzles. The supersonic impact of the buckyballs unzips their molecular structure and causes them to bond to adjacent graphene fragments and also simultaneously healing any defects in the layer. The cylinder forms a continuous defect-free tubular graphene layer with no edges. The graphene tube is drawn upward, sliding off the low-friction BAM-coated nickel cylinder, continuously pulled by pinch rollers onto a film winder. This process eliminates the need for high temperature quartz tube furnaces and exotic atmospheres for production of graphene film so that it is amenable to mass production at low cost.

Hypothetical process extrapolated from Wikipedia.

    • Space Elevator with Graphene RibbonEx-News Junkie, Sat Dec 2 2:23am
      Referring to the Science Magazine article describing graphene as the strongest material ever measured, with an intrinsic strength of 130 GPa and elastic modulus of 1 TPa... The technique (or similar) ... more
      • It will never happen. I think that it is probably physically impossible let alone practically impossible. The "Royal Road to Space" is with the air-breathing "Space Plane" with ramjet for as high as... more
        • Why do you think I'm focusing on itEx-News Junkie, Mon Dec 4 5:10pm
          Because I KNOW it won't be done by anyone alive today. Which leaves it wide open.
          • It won't be done by anybody EVER. (nm)DFM, Tue Dec 5 4:28pm
            • e the idea of a space elevator. Rockets carrying an handful of astronauts will play a small role in the future I envision, but generally they will be obsolete.
              • Space Elevator cannot possibly be made to work. DFM
                • Rocket fuel is PH🚀🚀EY, Mon Dec 11 7:15am
                  destroying ozone. We need an alternative means of propelling our ephemeral-everything into space.
                • Elevators pre-date rockets by a centuryEx-News Junkie, Sun Dec 10 9:07pm
                  Rockets didn't launch from Cape Canaveral until 1950. The technology is dangerous and closely guarded due to the potential for weaponization. Due to cost, complexity, and high risk, few countries in... more
                  • https://www.grc.nasa.gov/www/k-12/TRC/Rockets/history_of_rockets.html The date reporting the first use of true rockets was in 1232. At this time, the Chinese and the Mongols were at war with each... more
                  • FurthermoreEx-News Junkie, Tue Dec 12 11:18pm
                    Rocket technology is not guarded merely due to its potential for weaponization. Rockets were originally intended, built and used, as weapons. Peaceful uses came later, much later. Large rockets, for... more
                    • A space elevator could clear orbital debrisEx-News Junkie, Tue Dec 12 11:28pm
                      As a static structure, a space elevator could be used to collect or de-orbit space junk. With an appropriately designed Whipple Shield that can move up & down, a space elevator could absorb... more
        • Whoops.DFM, Mon Dec 4 4:51pm
          I wrote "(which HAS been achieved)" too many times. It should only be at 3km/sec. Higher speeds have NOT yet been achieved, or at least not published. DFM
      • Global Space Elevator Ring ConstructionEx-News Junkie, Sat Dec 2 3:52am
        The Global Space Elevator Ring construction would roughly follow this sequence: - BFR rocket #1 launches to low-earth orbit (LEO) carrying one 250-tonne space elevator cable spool. BFR rocket #2... more
        • Massaging the numbers a bitEx-News Junkie, Sat Dec 2 11:14am
          - (edit) After 10 years of operation, the first space elevator could lift 14,400 cable spools to GEO. Concurrently, the cable spools could be assembled in groups of eight, and each group moved into... more
          • Geometric GrowthEx-News Junkie, Sat Dec 2 12:11pm
            If each space elevator could launch enough cable spools to build an other space elevator every two days, then the number of space elevator installations would double every two days... The time to... more
            • What hasn't been improved by electrification?Ex-News Junkie, Sat Dec 2 3:29pm
              1. gas lights --> electric lights (ubiquitous) 2. wood stoves --> electric stoves (ubiquitous) 3. abacus --> electronic computer (ubiquitous) 4. sun dial --> digital watch (ubiquitous) 5. astrolabe... more
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