By Marcus Chown

Stephen Hawking defined it as 'the discovery of the century, if no longer of all time', but the scientists who first detected the cosmic radiation that used to be pointed out because the afterglow of the massive bang needed to admit that it was once extra accidentally than purpose. at the beginning its discoverers mistook the readings for the disruption attributable to the droppings of pigeons that had nested of their telescope, and but they went directly to win the Nobel prize. within the mid-1990s New Scientist author Marcus Chown drove throughout the US to interview the major scientists who had made this stunning discovery. Their account and Chown's description in their fulfillment used to be released to a lot acclaim. yet now, over a decade later, during this new and entirely revised variation he is going in the back of the hype and the hysteria to supply a transparent and vigorous clarification of 1 of the largest discoveries in sleek technological know-how - and a super photo of what occurred subsequent.

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The end of a CNT is regarded as a defect because the intermolecular interaction at the CNT end is much weaker. In light of the fact 22 2 Electrically Conducting Fiber Fig. 8 SEM images of the structure evolution during stress–strain test. 2 μm indicated by the arrow (Reprinted from Ref. [79], Copyright 2011, with permission from Elsevier) Fig. 9 a Schematic illustration to CNT fibers with different lengths of CNTs (Reprinted with the permission from Ref. [80]. Copyright 2008 with permission from Elsevier) b The dependence of the tensile strength of the CNT fiber on the CNT length (Reprinted from Ref.

J Mater Chem A 2(28):10776–10787 7. Thomas S, Deepak TG, Anjusree GS, Arun TA, Nair SV, Nair AS (2014) A review on counter electrode materials in dye-sensitized solar cells. J Mater Chem A 2(13):4474–4490 8. Chen X, Mao SS (2007) Titanium dioxide nanomaterials: synthesis, properties, modifications, and applications. Chem Rev 107(7):2891–2959 9. Chen L, Zhou Y, Dai H, Li ZD, Yu T, Liu JG, Zou ZG (2013) Fiber dye-sensitized solar cells consisting of TiO2 nanowires arrays on Ti thread as photoanodes through a low-cost, scalable route.

The CNTs densified by solvent retain its orientation along the fiber making them apt to slip off under tension. On this account, a combination of twisting and densifying is more preferable in preparing CNT fibers. Moreover, displacing the solvent with the suspension of functional components during the twisting process, we can easily incorporate the guest components into the fiber [72]. In addition, applying a tensile stress during twisting by drawing fiber through a zigzag path where tensions are exerted between the pillars, the resulting CNT fibers are improved in alignment and increased in mechanical strength (Fig.

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