Fabrication of nanoporous membrane and its nonlithographic patterning using Electrospinning and Stamp-thru-mold (ESTM)

Pit Fee Jao, Melroy Machado, Xiaoyu Cheng, David E. Senior, Gloria J. Kim, Dalian Ding, Wei Sun, Yong Kyu Yoon

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

7 Scopus citations

Abstract

The Electrospinning and Stamp-thru-mold (ESTM) technique, an integrated fabrication process which incorporates the versatility of the electrospinning process for nanofiber fabrication with the non-lithographic patterning ability of the stamp-thru-mold process is introduced. In-situ multilayer stacking of orthogonally aligned nanofibers, ultimately resulting in a nanoporous membrane, has been demonstrated using orthogonally placed collector electrode pairs and an alternating bias scheme. The pore size of the nanoporous membrane can be controlled by the number of layers and the deposition time of each layer. Non-lithographic patterning of the fabricated nanoporous membrane is then performed by mechanical shearing using a pair of pre-fabricated micromolds. This patterning process is contamination free compared to other photo lithographical patterning approaches. The ability to pattern on different substrates has been tested with and without oxygen plasma surface treatment. In vitro tests of ESTM poly-lactic-co-glycolic acid (PLGA) nanofibers verify the biocompatibility of this process. Simulation by the COMSOL Multiphysics tool has been conducted for the analysis of electrospun nanofiber alignment.

Original languageEnglish (US)
Title of host publication2011 IEEE 24th International Conference on Micro Electro Mechanical Systems, MEMS 2011
Pages257-260
Number of pages4
DOIs
StatePublished - Apr 13 2011
Event24th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2011 - Cancun, Mexico
Duration: Jan 23 2011Jan 27 2011

Publication series

NameProceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)
ISSN (Print)1084-6999

Other

Other24th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2011
Country/TerritoryMexico
CityCancun
Period1/23/111/27/11

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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