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


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
PublisherElectrochemical Society Inc.
Number of pages9
ISBN (Electronic)9781566778886
ISBN (Print)9781607682400
StatePublished - 2010
Externally publishedYes
EventCorrosion General Poster Session - 218th ECS Meeting - Las Vegas, NV, United States
Duration: Oct 10 2010Oct 15 2010

Publication series

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


OtherCorrosion General Poster Session - 218th ECS Meeting
Country/TerritoryUnited States
CityLas Vegas, NV

ASJC Scopus subject areas

  • General Engineering


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