Multiwall carbon nanotube sensor for monitoring engine oil degradation

Seung I. Moon, Kyeong K. Paek, Yun-Hi Lee, Jai Kyeong Kim, Soo-Won Kim, Byeong Kwon Ju

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An engine oil condition sensor based on multiwall carbon nanotubes was fabricated with the screen printing method. Carbon nanotube (CNT) paste was printed between two parallel-aligned electrodes. The conductivity change in the engine oil according to mileage was measured by using CNT oil sensor. The sensor output was compared with total acid number (TAN) to determine the remaining useful life of the engine oil. It was found that the sensor output was closely similar to TAN of the engine oil. As a result, a real-time engine oil condition monitoring sensor can be realized using CNTs as sensitive materials.

Original languageEnglish
Article number025608ESL
JournalElectrochemical and Solid-State Letters
Issue number8
Publication statusPublished - 2006 Aug 1


ASJC Scopus subject areas

  • Electrochemistry
  • Materials Science(all)

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