carbon nanotubes, carbon nanotube, nanotube, nanotubes,carbon nanotubes CVD grown multiwall carbon nanotubes on a nickel substrate. The nanotubes taper at the top, making them look like nanoscopic versions of the Washington Monument. (courtesy of Boston College Physics Department web page: http://www.physics.bc.edu/). Customers in State of Indiana: 7% of sales tax must be charged unless all information in each section of ST-105 is fully completed by the purchaser. If you are exempt from sales tax, please fill out Form ST-105 at or before you place an order by clicking Indiana Department of Revenue General Sales Tax Exemption Certificate Please fax the form to (617) 581 6749 Thanks! updated: 05/13/2008