Optical transduction of chemical forces

Nathan H. Mack, Jay Wm Wackerly, Viktor Malyarchuk, John A. Rogers*, Jeffrey S. Moore, Ralph G. Nuzzo

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

41 Scopus citations


We describe a plasmonic crystal device possessing utility for optically transducing chemical forces. The device couples complex plasmonic fields to chemical changes via a chemoresponsive, surface-bound hydrogel. We find that this architecture significantly enhances the spectroscopic responses seen at visible wavelengths while enabling capacities for sensitive signal transduction, even in cases that involve essentially no change in refractive index, thus allowing analytical detection via colorimetric assays in both imaging and spectroscopic modes.

Original languageEnglish (US)
Pages (from-to)733-737
Number of pages5
JournalNano letters
Issue number3
StatePublished - Mar 1 2007

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering


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