Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fabrication and Characterization of an Amperometric Glucose Sensor on a
  Flexible Polyimide Substrate   This study details the use of printing and other additive processes to
fabricate a novel amperometric glucose sensor. The sensor was fabricated using
a Au coated 12.7 micron polyimide film as a starting material, where
micro-contact printing, electrochemical plating and chloridization,
electrohydrodynamic jet (e-jet) printing, and spin coating were used to
pattern, deposit, print, and coat functional materials, respectively. We have
found that e-jet printing was effective for the deposition and patterning of
glucose oxidase inks between ~5 to 1000 micron in width, and we have
demonstrated that the enzyme was still active after printing. The thickness of
the permselective layer was optimized to obtain a linear response to glucose
concentration up to 32 mM. For these sensors no response to acetaminophen, a
common interfering compound, was observed.

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The categories of this paper are: q-fin
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The categories of this paper are: q-alg
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The categories of this paper are: eess
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The categories of this paper are: hep-th
5
The categories of this paper are: gr-qc
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The categories of this paper are: alg-geom
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The categories of this paper are: nucl-ex
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The categories of this paper are: q-bio
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The categories of this paper are: hep-lat
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The categories of this paper are: astro-ph
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
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The categories of this paper are: math
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The categories of this paper are: adap-org