US Patent 7315374 - Optical trap for CNT analysis

http://www.freepatentsonline.com/7315374.html

This patent from Intel teaches a method of investigating individual carbon nanotubes using optical tweezers to properly position the nanotube. Claim 1 reads:

1. A method comprising: manipulating a carbon nanotube (CNT) in a fluid by a laser beam; aligning an illuminating light from a light source along axis of the CNT to produce an optical response from the CNT; and monitoring the CNT using an optical sensor to control the laser beam according to the optical response.