Temperature-induced nanochannel array synthesis in microchannels

Y. T. Yeh, W. J. Khan, T. R. Xu, D. H. Wang, S. Y. Zheng

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


An novel on-chip synthesis technique for nanochannel arrays inside microfluidic channels is reported. The microfluidic channels are constructed with etched silicon trenches and a polydimethylsiloxane (PDMS) slab. These silicon microchannels provide a confined environment for highly oriented nanostructure synthesis. Triblock copolymer (SBA-15) is self-assembled inside the microchannel array as template for silica precursor polymerization under an induced temperature gradient. The temperature gradient is maintained by thermoelectric pads and used to control the direction and rate of organic solvent evaporation. This evaporation-induced self-assembly (EISA) process is confined within the microfluidic channels and guided into formation of highly ordered nanochannels with long range alignment. The fabrication and synthesis process is developed and the resultant nanomaterial is characterized. A fluorescent molecule dye, fluorescein, is used to demonstrate the potentials of the integrated device in nanofluidics applications.

Original languageEnglish (US)
Title of host publication2013 13th IEEE International Conference on Nanotechnology, IEEE-NANO 2013
Number of pages4
StatePublished - 2013
Event2013 13th IEEE International Conference on Nanotechnology, IEEE-NANO 2013 - Beijing, China
Duration: Aug 5 2013Aug 8 2013

Publication series

NameProceedings of the IEEE Conference on Nanotechnology
ISSN (Print)1944-9399
ISSN (Electronic)1944-9380


Other2013 13th IEEE International Conference on Nanotechnology, IEEE-NANO 2013

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Electrical and Electronic Engineering
  • Materials Chemistry
  • Condensed Matter Physics


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