Integrating Carbon Nanotubes into Microfluidic Chip for Separating Biochemical Compounds

Publication: Research - peer-reviewArticle in proceedings – Annual report year: 2011

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We present a new type of device to separate biochemical compounds wherein carbon nanotubes (CNTs) are integrated as chromatographic stationary phase. The CNTs were directly grown on the bottom of microfluidic channels on Si/SiO2 substrates by chemical vapor deposition (CVD). Acetylene was used as carbon source and Ni was employed as catalyst. For electrokinetic separations, higher electrical field strength is usually required; therefore, the CNTs were constructed in pillar-array-form by patterning the catalyst layer. Electrical field strength of 2.0 kV/cm has been realized, which is more than one order of magnitude higher than the one reported so far. The systems were successfully used to separate a compound containing two Coumarin dyes, 240 mM C460 and 270 mM C480.
Original languageEnglish
TitleMaterials Research Society Symposium Proceedings
Volume1371
Publication date2012
Pages57-61
ISBN (print)9781605113487
StatePublished

Conference

ConferenceXX International Materials Research Congress
CityCancun, Mexico
Period01/01/11 → …

Keywords

  • Stationary Phase, Microfluidics, Carbon Nanotubes
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