Corrosion inhibitor for use in giant magnetoresistance (GMR) biosensors

Zengcai Liu, Yi Ju Wang, Julia Litvinov, Pawilai Chinwangso, Richard Willson, Dmitri Litvinov

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We use corrosion inhibitors, for the first time, to protect GMR biosensor from corrosion in phosphate buffer saline (PBS) solution. A very uniform thin protective film (5-10nm) is formed on the surface of biosensor (including contacts). To make this protective film more effective, a multi-step process is developed. In the first step, protective film is formed in deionized water containing corrosion inhibitors with minimum initial corrosion and defects. Biosensors are then immersed in PBS solution containing corrosion inhibitors. In this step, any defects due to the attack of chloride ions could be self-repaired in the presence of corrosion inhibitors. Finally, biosensors with protective film are ready to test in PBS solution without any corrosion inhibitors. The exciting results show that as-prepared protective film is stable in PBS solution without any inhibitors for up to 15 days.

Original languageEnglish (US)
Title of host publicationCorrosion Posters (General) - 218th ECS Meeting
Pages103-111
Number of pages9
Edition30
DOIs
StatePublished - Dec 1 2011
EventCorrosion General Poster Session - 218th ECS Meeting - Las Vegas, NV, United States
Duration: Oct 10 2010Oct 15 2010

Publication series

NameECS Transactions
Number30
Volume33
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

OtherCorrosion General Poster Session - 218th ECS Meeting
CountryUnited States
CityLas Vegas, NV
Period10/10/1010/15/10

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Liu, Z., Wang, Y. J., Litvinov, J., Chinwangso, P., Willson, R., & Litvinov, D. (2011). Corrosion inhibitor for use in giant magnetoresistance (GMR) biosensors. In Corrosion Posters (General) - 218th ECS Meeting (30 ed., pp. 103-111). (ECS Transactions; Vol. 33, No. 30). https://doi.org/10.1149/1.3566093