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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editor: Gregory W. Faris
  • Vol. 5, Iss. 10 — Jul. 19, 2010

Implantable semiconductor biosensor for continuous in vivo sensing of far-red fluorescent molecules

Thomas O’Sullivan, Elizabeth A. Munro, Natesh Parashurama, Christopher Conca, Sanjiv S. Gambhir, James S. Harris, and Ofer Levi  »View Author Affiliations

Optics Express, Vol. 18, Issue 12, pp. 12513-12525 (2010)

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We have fabricated miniature implantable fluorescence sensors for continuous fluorescence sensing applications in living subjects. These monolithically integrated GaAs-based sensors incorporate a 675nm vertical-cavity surface-emitting laser (VCSEL), a GaAs PIN photodiode, and a fluorescence emission filter. We demonstrate high detection sensitivity for Cy5.5 far-red dye (50 nanoMolar) in living tissue, limited by the intrinsic background autofluorescence. These low cost, sensitive and scalable sensors are promising for long-term continuous monitoring of molecular dynamics for biomedical studies in freely moving animals.

© 2010 OSA

OCIS Codes
(130.5990) Integrated optics : Semiconductors
(130.6010) Integrated optics : Sensors
(170.2520) Medical optics and biotechnology : Fluorescence microscopy
(170.3890) Medical optics and biotechnology : Medical optics instrumentation
(230.5160) Optical devices : Photodetectors

ToC Category:
Medical Optics and Biotechnology

Original Manuscript: March 23, 2010
Revised Manuscript: May 22, 2010
Manuscript Accepted: May 22, 2010
Published: May 27, 2010

Virtual Issues
Vol. 5, Iss. 10 Virtual Journal for Biomedical Optics

Thomas O’Sullivan, Elizabeth A. Munro, Natesh Parashurama, Christopher Conca, Sanjiv S. Gambhir, James S. Harris, and Ofer Levi, "Implantable semiconductor biosensor for continuous in vivo sensing of far-red fluorescent molecules," Opt. Express 18, 12513-12525 (2010)

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