A method for physically pulling nanotube bundles apart by utilizing electrostatically tethered nanoplatelets to gather and concentrate sonication energy at the surface of nanotube aggregates is developed (see image). The nanoplatelets can be separated from the nanotubes by tuning the ionic strength of the medium. This colloidal approach obviates the need to drastically modify nanotube surface chemistry to achieve full exfoliation.
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Sun et al. (2009) studied this question.
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