Carbon Nanotubes are so light that they float in airpic.twitter.com/AlHWeap8cm
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Just to avoid misunderstandings: if you hang an elephant by a carbon nanotube, the nanotube will snap immediately. Actually it will snap also if you pull gently with your fingers
Carbon Nanotubes have a "tensile strength" σ of about 60 Giga-Pascals
weighs about 20,000 Newtons
Indeed, but that's because most nanotubes have a cross sectional area of about 1nm^2, which significantly reduces the amount that it can hold. Okay, so just wrap them together? Well that apparently reduces the tensile strength by half with the addition of each thread, I think.
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Why wrapping them reduce the tensile strength?
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I think it's because it messes up the "perfect" alignment of the 2D graphene, which is the source of its original strength (cont..)
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