The BioCD, invented by Drs' Fred Regnier and David Nolte enables labelfree detection of biomolecular

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• The BioCD, invented by Drs. Fred Regnier and
  David Nolte enables label-free detection of
  biomolecular interactions in a fast, inexpensive
  and highly sensitive format. The technology
  utilizes interferometry (essentially reflected
  light) to detect changes in height of biomolecule
  arrays printed on a reflective surface.
• This technology spawned the company Quadraspec in
  Purdue Research Park that is now producing BioCD
  products for verterinary diagnosis. Four active
  research grants with Quadraspec are underway in
  the Bindley Center to further develop the
  sensitivity of this technology and to move the
  technology into human diagnostic applications.