Oregon State University

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Event Details

MS Final Examination – David Matthews

Thursday, December 19, 2013 8:30 AM - 10:30 AM

Design and Fabrication of a Flexible Glucose Sensor and Catheter / An Analytical Model of ALD in Porous Materials
Flexible electronics processing techniques were applied to successfully integrate a glucose sensor with a hormone-delivery catheter in order to create a cheap and minimally invasive method for patients with type 1 diabetes to continually monitor and control their blood sugar levels. Ultimately, this work intends to move toward the development of a complete artificial pancreas. The theory, development, and optimization of a process to fabricate these sensors/catheters will be discussed, and electrical and mechanical characterization of the resulting devices will be presented.

Experiments performed in the process of device development will be addressed, including data indicating that aluminum oxide deposited via atomic layer deposition (ALD) may not be suitable for application in flexible devices intended to withstand extreme curvature.

As a supplemental topic, a model of ALD in porous materials will be presented as applied to deposition of aluminum oxide in carbon nanocrystal (CNC) aerogels. Aerogel geometry was modeled as a simple three-dimensional cubic network of cylinders, and recently-published modeling techniques were applied to generate expected thickness profiles of ALD alumina as a function of depth into an aerogel sample. Modeled thickness profiles were found to generally agree with experimental observations, suggesting the usefulness of this model for ALD in aerogels and other complex porous geometries.

Major Advisor: John Conley
Committee: John Wager
Committee: David Cann
GCR: Julia Jones 

Kelley Engineering Center (campus map)
Nicole Thompson
1 541 737 3617
Nicole.Thompson at oregonstate.edu
Sch Elect Engr/Comp Sci
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