A system and method for detecting a single-molecule using an integrated circuit which includes at least one membrane having a nanopore located between first and second reservoirs and a low-noise preamplifier having an electrode formed on the surface thereof is provided. The method includes passing a target molecule through the nanopore, and measuring a current through the nanopore to detect the presence of a biomolecular entity, if any.

A method for characterizing carbon nanotubes comprising: providing a conductive substrate and applying an insulating layer on the conductive substrate; forming a carbon nanotube structure on a surface of the insulating layer, the carbon nanotube structure includes at least one carbon nanotube; placing the carbon nanotube structure under a scanning electron microscope, adjusting the scanning electron microscope with an accelerating voltage ranging from 520 KV, a dwelling time ranging 620 microseconds and a magnification ranging from 10000100000 times; taking photos of the carbon nanotube structure with the scanning electron microscope; and, obtaining a photo of the carbon nanotube structure, the photo shows the at least one carbon nanotube and a background.

A method for characterizing carbon nanotubes comprising: providing a conductive substrate and applying an insulating layer on the conductive substrate; forming a carbon nanotube structure on a surface of the insulating layer, the carbon nanotube structure includes at least one carbon nanotube; placing the carbon nanotube structure under a scanning electron microscope, adjusting the scanning electron microscope with an accelerating voltage ranging from 520 KV, a dwelling time ranging 620 microseconds and a magnification ranging from 10000100000 times; taking photos of the carbon nanotube structure with the scanning electron microscope; and, obtaining a photo of the carbon nanotube structure, the photo shows the at least one carbon nanotube and a background.