Mechanical behavior of microstructures from a chemo-responsive polymer nanocomposite based on cotton cellulose nanofibers

A. E. Hess, K. Shanmuganathan, J. R. Capadona, L. Hsu, S. Rowan, C. Weder, D. J. Tyler, C. A. Zorman

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

4 Citations (Scopus)

Abstract

This paper reports on the fabrication and characterization of MEMS-scale devices from a mechanically dynamic polymer nanocomposite, consisting of a cotton-derived cellulose nanofibers encased in a poly(vinyl acetate) matrix, with a stiffness modulated by the presence or absence of water. Microtensile testing showed that the Young's modulus (E) of the nanocomposite is initially ∼2.7 GPa, but reduces to ∼4 MPa upon immersion in water for 7 minutes. A combination of laser-micromachining and lithographic processing was used to produce an intracortical probe with switchable stiffness based on the dynamic nanocomposite. An electrode with area 2800 μm2 was found to have an impedance of 156 kΩ at 1 kHz. This investigation was the first time that a chemoresponsive nanocomposite based on cotton cellulose nanofibers was used in MEMS-scale structures.

Original languageEnglish
Title of host publication2011 IEEE 24th International Conference on Micro Electro Mechanical Systems, MEMS 2011
Pages453-456
Number of pages4
DOIs
Publication statusPublished - 2011
Externally publishedYes
Event24th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2011 - Cancun
Duration: 2011 Jan 232011 Jan 27

Other

Other24th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2011
CityCancun
Period11/1/2311/1/27

ASJC Scopus subject areas

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

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  • Cite this

    Hess, A. E., Shanmuganathan, K., Capadona, J. R., Hsu, L., Rowan, S., Weder, C., Tyler, D. J., & Zorman, C. A. (2011). Mechanical behavior of microstructures from a chemo-responsive polymer nanocomposite based on cotton cellulose nanofibers. In 2011 IEEE 24th International Conference on Micro Electro Mechanical Systems, MEMS 2011 (pp. 453-456). [5734459] https://doi.org/10.1109/MEMSYS.2011.5734459