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23 December 2003 Toward a disposable real-time DNA biosensing platform
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Proceedings Volume 5345, Microfluidics, BioMEMS, and Medical Microsystems II; (2003)
Event: Micromachining and Microfabrication, 2004, San Jose, California, United States
With the goal of a portable diagnostic system in mind, we have designed a disposable platform for DNA detection. Surface micromachining using the SwIFT process at Sandia National Laboratories was used to make the new device, combining a waveguide, grating optics, heating structures, on-chip pumping, and microfluidics in a disposable package. PDMS microfluidic channels are integrated with the surface micromachined device to enable higher flow rates and added fluid complexity. Work on DNA hybridization under flow is presented, as applies to the function of the sensor. A description of the platform covering heating of the waveguide surface, laser coupling into the waveguide using grating optics, attachment chemistry for the sensor surface, and sealing of the PDMS microfluidic system to the device is given.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Layne D. Williams, Justin Bishop, Steve Blair, David W. Peters, and Murat Okandan "Toward a disposable real-time DNA biosensing platform", Proc. SPIE 5345, Microfluidics, BioMEMS, and Medical Microsystems II, (23 December 2003);

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