AFM image of complex: single protein (Trypsin) - single wall carbon nanotube (SWCN)

AFM image of complex: single protein (Trypsin) - single wall carbon nanotube deposited on mica. These biomolecules (radius of gyration ~ 6nm) adsorb spontaneously on the sidewalls of SWNT. The atomically flat surface is required in order to observe SWNT with diameter ~
1-1.7 nm. There is no binding of CNT on negatively charge surface of mica in absence of biomolecules. The coupling of carbon nanotubes (CNTs) with biomolecules represents a prototype system for bio-nanomaterials conjugates, which preludes to the integration of electronic functionality into
biomolecular recognition.