Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1788832 | Current Applied Physics | 2009 | 4 Pages |
Abstract
We report a novel low-cost and simple technique to fabricate micron-scaled pH sensors using Pd patterned structures. We utilized a combination of photolithography and a lift-off technique to fabricate a V-shaped 4-probe device from a continuous Pd film. The device could detect the pH of a buffer solution by electrolysis. The hydrogen gas (H2) in the solution generated during electrolysis was sensed by the Pd structure. Our results demonstrate that micron-scaled pH sensors based on V-shaped Pd structures can be used to quantitatively detect the pH of a wide pH range of buffer solutions.
Related Topics
Physical Sciences and Engineering
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Condensed Matter Physics
Authors
Young Tack Lee, Eunsongyi Lee, Jun Min Lee, Wooyoung Lee,