Highly sensitive mass detection and identification using vibration localization in coupled microcantilever arrays

Author

• Matthew A. Spletzer, Purdue University - Main CampusFollow
• Arvind Raman, Birck Nanotechnology Center, Purdue UniversityFollow
• Hartono Sumali, Applied Mechanics Development Department, Sandia National Laboratories
• John P. Sullivan, Center for Integrated Nanotechnology Science Department, Sandia National Laboratories

Abstract

We study the use of vibration localization in large arrays of mechanically coupled, nearly identical microcantilevers for ultrasensitive mass detection and identification. We demonstrate that eigenmode changes in such an array can be two to three orders of magnitude greater than relative changes in resonance frequencies when an analyte mass is added. Moreover, the changes in eigenmodes are unique to the cantilever to which mass is added, thereby providing a characteristic "fingerprint" that identifies the particular cantilever where mass has been added. This opens the door to ultrasensitive detection and identification of multiple analytes with a single coupled array.

Citation

APPLIED PHYSICS LETTERS 92, 114102

Date of this Version

March 2008

Recommended Citation

Spletzer, Matthew A.; Raman, Arvind; Sumali, Hartono; and Sullivan, John P., "Highly sensitive mass detection and identification using vibration localization in coupled microcantilever arrays" (2008). Birck and NCN Publications. Paper 192.
https://docs.lib.purdue.edu/nanopub/192