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Single-walled carbon nanotubes(SWNCTs)are materials with structural,electronic and optical properties that make them attractive for a myriad of advanced technology applications.A long standing practical barrier to their use is that current means of synthesis produce mixtures that are heterogeneous with respect to all key defining metrics: chirality,diameter,length,electronic type and enantiomeric "twist." This multidimensional polydispersity problem hinders both the metrology of distinct chiral species and the implementation of those species in high tech applications.