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

研究成果: Conference contribution

4 被引用数 (Scopus)

抄録

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.

本文言語English
ホスト出版物のタイトル2011 IEEE 24th International Conference on Micro Electro Mechanical Systems, MEMS 2011
ページ453-456
ページ数4
DOI
出版ステータスPublished - 2011
外部発表はい
イベント24th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2011 - Cancun
継続期間: 2011 1月 232011 1月 27

Other

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

ASJC Scopus subject areas

  • 電子工学および電気工学
  • 機械工学
  • 凝縮系物理学
  • 電子材料、光学材料、および磁性材料

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