Proposed strategy to sort semiconducting nanotubes by radius and chirality

Details Proposed strategy to sort semiconducting nanotubes by radius and chirality Proposed strategy to sort semiconducting nanotubes by radius and chirality

2005-01-10

arxiv.org/abs/cond-mat/0501206v2

Physics

Condensed Matter

Other Condensed Matter

probably 4 journal pages, 4 figures

Scientific paper

We propose a strategy that uses a tunable laser and an alternating non-linear potential to sort a suspension of assorted semiconducting nanotubes. Since, a polarized exciton is a dipole, the excited nanotubes will experience a net force and may then diffuse towards an electrode. The calculated exciton binding energy suddenly drops to zero and the force on the nanotube increases dramatically when the exciton disassociates as the nanotube moves towards the electrode. The quantum adiabatic theorem shows that excitons will be polarized for potential frequencies typical for experiments $\approx 10$ MHz.

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