US Patent 8007871 - Deposition of ions on CNTs

http://www.freepatentsonline.com/8007871.html

This patent from NanoSelect Inc. teaches a method to deposit individual ions on a carbon nanotube which may be useful in the development of nanoscale sensors. Claim 1 reads:

1. A method for selectively depositing one or more ions, comprising:

providing at least one nanotube in an atmospheric or sub-atmospheric pressure environment, and

selectively depositing the one or more ions into at least one nanotube, onto at least one nanotube, or both, using an electrospray ion source.