Aptamer-modified anodized aluminum oxide-based capacitive sensor for the detection of bisphenol A

Bongkeun Kang, Joo Hyoung Kim, Soyoun Kim, Kyung Hwa Yoo

Research output: Contribution to journalArticle

17 Citations (Scopus)

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 languageEnglish
Article number073703
JournalApplied Physics Letters
Volume98
Issue number7
DOIs
Publication statusPublished - 2011 Feb 14

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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