TOWARDS SENSING SINGLE OR A FEW BIO-MOLECULAR ARCHITECTURES: DESIGN OF FUNCTIONAL SURFACES Conference Paper uri icon

abstract

  • There is considerable interest in electrical sensing of biomolecular binding since it has the potential to be label free, to work easily in aqueous environments native to the biomolecules, and to be integrated with small, fast, and inexpensive microelectronoics as detection instrumentation. Although electrochemical methods have been used successfully in detections of DNA molecules with Ag labels at very high sensitivity (~ p ml), detection of DNA molecules in terms of label free techniques has a lower sensitivity (~ ml). Here, the surface attachment chemistry is critical towards the detection of ultra-low concentration of biomolecules. In this article, based on density functional theory, we have calculated and analyzed the electrical characteristics of the contact between aromatic molecules and silicon (100) 21 surfaces. Design principles for silicon based electrodes of electrochemically biomolecular sensing instruments for label-free sensing of single or a few biomolecular molecules have also been discussed.

published proceedings

  • International Journal of High Speed Electronics and Systems

author list (cited authors)

  • ZHAO, P., WOOLARD, D., SEMINARIO, J. M., & TREW, R.

citation count

  • 0

complete list of authors

  • ZHAO, PEIJI||WOOLARD, DWIGHT||SEMINARIO, JORGE M||TREW, ROBERT

publication date

  • March 2008