Articles by Sameh Tawfick in JoVE

Fabrication, Densification, and Replica Molding of 3D Carbon Nanotube Microstructures

JoVE 3980 7/02/2012

Davor Copic¹, Sei Jin Park¹, Sameh Tawfick¹, Michael De Volder², A. John Hart¹

¹Mechanosynthesis Group, Department of Mechanical Engineering, University of Michigan, ²IMEC, Belgium

We present methods for fabrication of patterned microstructures of vertically aligned carbon nanotubes (CNTs), and their use as master molds for production of polymer microstructures with organized nanoscale surface texture. The CNT forests are densified by condensation of solvent onto the substrate, which significantly increases their packing density and enables self-directed formation of 3D shapes.