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

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

doi:10.1063/1.3555345

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

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

Department of Physics

Research output: Contribution to journal › Article › peer-review

18 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 language	English
Article number	073703
Journal	Applied Physics Letters
Volume	98
Issue number	7
DOIs	https://doi.org/10.1063/1.3555345
Publication status	Published - 2011 Feb 14

Bibliographical note

Funding Information:
This work has been financially supported by the National Research Foundation of Korea through the National Core Research Center for Nanomedical Technology (Grant No. R15-20040924-00000-0).

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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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.",

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AU - Yoo, Kyung Hwa

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