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Patternable Rough Textured Gold Microwire for Neurochemical Sensing

Published online by Cambridge University Press:  18 January 2016

Eva Mutunga  and
Pawan Tyagi
Eva Mutunga
Affiliation:
Bredesen Center, University of Tennessee, 418 Greve Hall, 821 Volunteer Blvd, Knoxville, TN 37996, U.S.A.
Pawan Tyagi*
Affiliation:
Mechanical Engineering Department, University of the District of Columbia, 4200 Connecticut Ave. N.W., Washington DC, U.S.A.
*
*(Email: [email protected])
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Abstract

Understanding spatial and temporal neuronal activities is crucial for finding the cure for brain related ailments and advancement of our knowledge about the brain itself. This paper discusses our recent finding of the patternable rough textured gold microwire for neurochemical sensing. We have successfully fabricated the ∼5 µm wide and ∼ 60 nm thick gold microwires based electrochemical sensor. We produced these microwires along the edge of lithographically patterned nickel thin film. A nickel thin film edge was shadowed by the photoresist overhang during electrochemical growth only to allow gold deposition along the edges. Our electrochemical growth conditions yielded very rough textured sensor. Rough textured biosensors are highly desirable for increasing surface/volume ratio for efficient electrochemical sensing. These rough-textured microwires were transformed into the functional neurochemical sensor to detect dopamine. Our voltammetry and chronoamperometry studies on rough textured microwires based sensor confirmed the successful detection of dopamine.

Keywords

coatingelectrochemical synthesislithography (removal)
Type
Articles
Information
MRS Advances , Volume 1 , Issue 11: Nanomaterials and Synthesis , 2016 , pp. 717 - 721
Copyright
Copyright © Materials Research Society 2016 

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References

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