Abstract: A method for separating fractions of single-walled carbon nanotubes includes exposing a solution containing fractions of single-walled carbon nanotubes to a reducing agent and separating the resulting reaction products. An alternate method for separating fractions of single-walled carbon nanotubes includes exposing a solution containing fractions of single-walled carbon nanotubes to an oxidizing agent and separating the resulting reaction products. A third method for separating fractions of single-walled carbon nanotubes includes exposing a solution containing fractions of substantially non-functionalized single-walled carbon nanotubes to a charge transfer complex agent and separating the resulting reaction products. These methods allow the production of single-walled carbon nanotubes of approximately 95 to 99% metallic and semiconducting types.

Abstract: A bone replacement material and methods for making and using the same are disclosed. In one embodiment, the bone replacement material comprises a viscous component. The bone replacement material also comprises a plurality of biodegradable inclusions, wherein the inclusions comprise polymers. The inclusions can comprise polymers with therapeutic agents. In other embodiments, the inclusions have a high surface to volume ratio.