Detecting single porphyrin molecules in a conically shaped synthetic nanopore. Academic Article uri icon


  • We report here the first example of abiotic resistive-pulse sensing of a molecular (as opposed to a particle or macromolecular) analyte. This was accomplished by using a conically shaped nanopore prepared by the track-etch method as the sensing element. It is possible to sense the molecular analyte because the small diameter opening of the conical nanopore (approximately 4.5 nm) is comparable to the diameter of the analyte molecule (approximately 2 nm).

published proceedings

  • Nano Lett

altmetric score

  • 9

author list (cited authors)

  • Heins, E. A., Siwy, Z. S., Baker, L. A., & Martin, C. R.

citation count

  • 237

complete list of authors

  • Heins, Elizabeth A||Siwy, Zuzanna S||Baker, Lane A||Martin, Charles R

publication date

  • September 2005