Transferring vertically aligned carbon nanotubes onto a polymeric substrate using a hot embossing technique for microfluidic applications

A Mathur, SS Roy, JAD McLaughlin

Research output: Contribution to journalArticle

11 Citations (Scopus)
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Abstract

We explored the hot embossing method for transferring vertically aligned carbon nanotubes (CNTs) into microfluidic channels, fabricated on poly-methyl-methacrylate (PMMA). Patterned and unpatterned CNTs were synthesized by microwave plasma-enhanced chemical vapour deposition on silicon to work as a stamp. For hot embossing, 115°C and 1 kN force for 2 min were found to be the most suitable parameters for the complete transfer of aligned CNTs on the PMMA microchannel. Raman and SEM studies were used to analyse the microstructure of CNTs before and after hot embossing. The PMMA microparticles with dimensions (approx. 10 µm in diameter) similar to red blood cells were successfully filtered using laminar flow through these microfluidic channels. Finally, a microfluidic-based point-of-care device for blood filtration and detection of bio-molecules is drawn schematically.
Original languageEnglish
Pages (from-to)1129-1133
JournalJournal of The Royal Society Interface
Volume7
Issue number48
DOIs
Publication statusPublished - 2010

Keywords

  • carbon nanotubes microfluidics hot embossing poly-methyl-methacrylate

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