Two-photon lithography of platinum-porphyrin oxygen sensors

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

3 Scopus Citations
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Author(s)

  • A. Cody Young
  • Joe Dragavon
  • Tim Strovas
  • Tim Molter
  • Lixin Zheng
  • Lloyd Burgess
  • Mary E. Lidstrom
  • Deirdre R. Meldrum

Detail(s)

Original languageEnglish
Pages (from-to)931-936
Journal / PublicationIEEE Sensors Journal
Volume7
Issue number6
Publication statusPublished - Jun 2007
Externally publishedYes

Abstract

Oxygen sensing structures were generated by two-photon microfabrication. By copolymerizing metalloporphyrins with a two-photon (2P) photo-initiated polymer, oxygen sensors were patterned into complex 3-D shapes. The sensors were generated on the interior walls of small bore capillaries to allow for controlled concentrations of oxygenated water and cell-rich media to be pumped through their local environment. Phosphorescence lifetime of the patterns were acquired at known levels of O2 as a standard for measuring the respiration rate of a tiny population of bacterial cells. In addition, we report that the inclusion of the Pt-Porphyrin significantly reduces the 2P polymerization threshold. Fabricating near the inferred polymerization threshold, 3-D structures as small as 50 nm were observed in both the Pt-Porphyrin enhanced and the pure photopolymerizable monomers. © 2007 IEEE.

Research Area(s)

  • Capillary sensors, Microfabrication, Oxygen detection, Two-photon (2P)

Citation Format(s)

Two-photon lithography of platinum-porphyrin oxygen sensors. / Young, A. Cody; Dragavon, Joe; Strovas, Tim et al.
In: IEEE Sensors Journal, Vol. 7, No. 6, 06.2007, p. 931-936.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review