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sangeeth kallat

formation of CNT

Dear All,

Would you please tell me why Carbon goes for Nanotubes whereas Silicon (and most other elements) prefer solid nanowires? Is there any dependence on the type of hybridization happening there?

Thanks,

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    Saumitra Raj Mehrotra

    Hi, The answer lies in energetics and minimum energy of formation. Carbon sheets (graphene) can roll up into carbon nanotubes easily, however only discrete combinations are allowed.On the opposite side Si can also for nanotubes under some situations.Y ou should look at the following link, where the author showed possible nanotube formations in Si, http://docs.lib.purdue.edu/cgi/viewcontent.cgi?article=1002&context=prism.

    thanks

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