Abstract
We describe a rapid, sensitive, and low-cost method to detect bisphenol A (BPA) using an anodized aluminum oxide-based capacitive sensor. BPA is detected by measuring the change in capacitance caused by the biospecific binding of BPA with a BPA aptamer that is immobilized on the electrode surface. For a solution containing 100 pM BPA, the capacitance decreased by approximately 3%. In addition, we fabricated a capacitive sensor array and demonstrated that BPA in environmental samples can be measured using our capacitive sensor.
| Original language | English |
|---|---|
| Article number | 073703 |
| Journal | Applied Physics Letters |
| Volume | 98 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2011 Feb 14 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)
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Kang, B., Kim, J. H., Kim, S., & Yoo, K. H. (2011). Aptamer-modified anodized aluminum oxide-based capacitive sensor for the detection of bisphenol A. Applied Physics Letters, 98(7), [073703]. https://doi.org/10.1063/1.3555345