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Lab-on-a-chip with integrated optical transducers.

S Balslev1, A M Jorgensen, B Bilenberg

  • 1MIC - Department of Micro and Nanotechnology Technical University of Denmark (DTU) Oersteds Plads, Building 345 east, DK-2800, Kongens Lyngby, Denmark.

Lab on a Chip
|February 2, 2006
PubMed
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This study demonstrates a novel lab-on-a-chip system integrating optics, fluidics, and electronics. The device features an on-chip dye laser and waveguides for absorbance measurements, showcasing unprecedented component integration.

Area of Science:

  • Microfluidics
  • Optoelectronics
  • Integrated Systems

Background:

  • Advancements in microchip technology require integration of diverse functional components.
  • Previous systems often lack monolithic integration of optical, fluidic, and electronic elements.

Purpose of the Study:

  • To present a feasibility study of a lab-on-a-chip system with five monolithically integrated components.
  • To demonstrate the integration of optics, fluidics, and electronics on a single substrate.

Main Methods:

  • Monolithic integration of an optically pumped liquid dye laser, waveguides, and fluidic channels in SU-8 polymer.
  • Embedding photodiodes within the silicon substrate for light detection.
  • Utilizing waveguides for light coupling from the laser to fluidic channels and to photodiodes for absorbance measurements.

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Main Results:

  • Successful integration of five distinct components: dye laser, waveguides, fluidic channels with mixers, photodiodes, and electrical connectors.
  • Demonstration of on-chip light generation at 576 nm and its coupling for absorbance measurements.
  • First-time reported monolithic integration of all these components on a single substrate.

Conclusions:

  • The presented lab-on-a-chip system represents a significant step towards highly integrated microdevices.
  • This integrated platform enables on-chip absorbance measurements, paving the way for advanced microfluidic analytical devices.
  • The successful integration highlights the potential for combining optical, fluidic, and electronic functionalities in a single device.