Journal
APL MATERIALS
Volume 1, Issue 5, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4829975
Keywords
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Funding
- University of Alberta (the Department of Chemistry and the Faculty of Science)
- Natural Science and Engineering Research Council (NSERC)
- Canada Foundation for Innovation (CFI)
- Alberta Advanced Education & Technology Small Equipment Grants Program (AET/SEGP)
- Grand Challenges Canada
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Positively and/or negatively charged poly (N-isopropylacrylamide)-based microgels were deposited on a single substrate and isolated regions of Au overlayers were deposited on top of the microgels. Each spatially isolated Au overlayer region had a different thickness to make an etalon array. We found that areas with a thin Au overlayer (5 nm) responded to a range of polymer molecular weights (MW), while areas with a thick overlayer (35 nm) can only respond to low molecular weight polyelectrolytes. By comparing the optical responses of the device's individual array elements, a good approximation of the polyelectrolyte MW in solution can be made. (C) 2013 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License.
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