A microcantilever-based pathogen detector

B. L. Weeks, J. Camarero, Aleksandr Noy, A. E. Miller, L. Stanker, J. J. De Yoreo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations


The ability to detect small amounts of materials, especially bacterial organisms, is important for medical diagnostics and national security issues. Engineered micromechanical systems provide one approach for constructing multifunctional, highly sensitive, real-time, immunospecific biological detectors. We present qualitative detection of specific Salmonella strains using a functionalized silicon nitride microcantilever. Detection is achieved due to a change in the surface stress on the cantilever surface in-situ upon binding of a small number of becteria. Scanning electron micrographs indicate that less than 25 adsorbed bacteria are required for detection.

Original languageEnglish (US)
Title of host publication2003 Nanotechnology Conference and Trade Show - Nanotech 2003
EditorsM. Laudon, B. Romanowicz
Number of pages3
StatePublished - 2003
Externally publishedYes
Event2003 Nanotechnology Conference and Trade Show - Nanotech 2003 - San Francisco, CA, United States
Duration: Feb 23 2003Feb 27 2003


Other2003 Nanotechnology Conference and Trade Show - Nanotech 2003
Country/TerritoryUnited States
CitySan Francisco, CA


  • Biosensor
  • Cantilever
  • Immunosensor
  • Microfabrication
  • Surface functionalization

ASJC Scopus subject areas

  • Engineering(all)


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