A bio-inspired, chemo-responsive polymer nanocomposite for mechanically dynamic microsystems

A. Hess; J. Dunning; J. Harris; J. R. Capadona; K. Shanmuganathan; S. J. Rowan; C. Weder; D. J. Tyler; C. A. Zorman

doi:10.1109/SENSOR.2009.5285522

A bio-inspired, chemo-responsive polymer nanocomposite for mechanically dynamic microsystems

A. Hess, J. Dunning, J. Harris, J. R. Capadona, K. Shanmuganathan, S. J. Rowan, C. Weder, D. J. Tyler, C. A. Zorman

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

15 Citations (Scopus)

Abstract

This paper reports the development of a biologically-inspired, variable-modulus nanocomposite material for mechanically dynamic biomedical microsystems. This nanocomposite is comprised of a poly(vinyl acetate) matrix polymer that is reinforced with rigid cellulose nanofibers, and becomes very flexible when exposed to water. A direct-write CO₂ laser was used to pattern structures in this chemical- and temperature-sensitive material. Tensile testing of laser-cut, micron-scale nanocomposite beams was performed using a custom-built tensile tester. These samples displayed a significant reduction in Young's modulus from 4.1 GPa to 6.1 MPa when the nanocomposite was exposed to phosphate buffered saline. Additionally, the modulus change was observed to be reversible upon drying of soaked tensile samples. As a well-suited application of this nanocomposite, cortical probes utilizing this material as a substrate were fabricated. Gold-coated, dual-shank cortical probes utilizing this nanocomposite as a substrate were shown to record action potentials from a single neuron in a cockroach brain.

Original language	English
Title of host publication	TRANSDUCERS 2009 - 15th International Conference on Solid-State Sensors, Actuators and Microsystems
Pages	224-227
Number of pages	4
DOIs	https://doi.org/10.1109/SENSOR.2009.5285522
Publication status	Published - 2009
Externally published	Yes
Event	TRANSDUCERS 2009 - 15th International Conference on Solid-State Sensors, Actuators and Microsystems - Denver, CO Duration: 2009 Jun 21 → 2009 Jun 25

Other

Other	TRANSDUCERS 2009 - 15th International Conference on Solid-State Sensors, Actuators and Microsystems
City	Denver, CO
Period	09/6/21 → 09/6/25

Keywords

Cortical probe
Mechanically dynamic
Nanocomposite
Neural interfacing

ASJC Scopus subject areas

Hardware and Architecture
Electrical and Electronic Engineering

Access to Document

10.1109/SENSOR.2009.5285522

Cite this

Hess, A., Dunning, J., Harris, J., Capadona, J. R., Shanmuganathan, K., Rowan, S. J., Weder, C., Tyler, D. J., & Zorman, C. A. (2009). A bio-inspired, chemo-responsive polymer nanocomposite for mechanically dynamic microsystems. In TRANSDUCERS 2009 - 15th International Conference on Solid-State Sensors, Actuators and Microsystems (pp. 224-227). [5285522] https://doi.org/10.1109/SENSOR.2009.5285522

Hess, A, Dunning, J, Harris, J, Capadona, JR, Shanmuganathan, K, Rowan, SJ, Weder, C, Tyler, DJ & Zorman, CA 2009, A bio-inspired, chemo-responsive polymer nanocomposite for mechanically dynamic microsystems. in TRANSDUCERS 2009 - 15th International Conference on Solid-State Sensors, Actuators and Microsystems., 5285522, pp. 224-227, TRANSDUCERS 2009 - 15th International Conference on Solid-State Sensors, Actuators and Microsystems, Denver, CO, 09/6/21. https://doi.org/10.1109/SENSOR.2009.5285522

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abstract = "This paper reports the development of a biologically-inspired, variable-modulus nanocomposite material for mechanically dynamic biomedical microsystems. This nanocomposite is comprised of a poly(vinyl acetate) matrix polymer that is reinforced with rigid cellulose nanofibers, and becomes very flexible when exposed to water. A direct-write CO2 laser was used to pattern structures in this chemical- and temperature-sensitive material. Tensile testing of laser-cut, micron-scale nanocomposite beams was performed using a custom-built tensile tester. These samples displayed a significant reduction in Young's modulus from 4.1 GPa to 6.1 MPa when the nanocomposite was exposed to phosphate buffered saline. Additionally, the modulus change was observed to be reversible upon drying of soaked tensile samples. As a well-suited application of this nanocomposite, cortical probes utilizing this material as a substrate were fabricated. Gold-coated, dual-shank cortical probes utilizing this nanocomposite as a substrate were shown to record action potentials from a single neuron in a cockroach brain.",

keywords = "Cortical probe, Mechanically dynamic, Nanocomposite, Neural interfacing",

author = "A. Hess and J. Dunning and J. Harris and Capadona, {J. R.} and K. Shanmuganathan and Rowan, {S. J.} and C. Weder and Tyler, {D. J.} and Zorman, {C. A.}",

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N2 - This paper reports the development of a biologically-inspired, variable-modulus nanocomposite material for mechanically dynamic biomedical microsystems. This nanocomposite is comprised of a poly(vinyl acetate) matrix polymer that is reinforced with rigid cellulose nanofibers, and becomes very flexible when exposed to water. A direct-write CO2 laser was used to pattern structures in this chemical- and temperature-sensitive material. Tensile testing of laser-cut, micron-scale nanocomposite beams was performed using a custom-built tensile tester. These samples displayed a significant reduction in Young's modulus from 4.1 GPa to 6.1 MPa when the nanocomposite was exposed to phosphate buffered saline. Additionally, the modulus change was observed to be reversible upon drying of soaked tensile samples. As a well-suited application of this nanocomposite, cortical probes utilizing this material as a substrate were fabricated. Gold-coated, dual-shank cortical probes utilizing this nanocomposite as a substrate were shown to record action potentials from a single neuron in a cockroach brain.

AB - This paper reports the development of a biologically-inspired, variable-modulus nanocomposite material for mechanically dynamic biomedical microsystems. This nanocomposite is comprised of a poly(vinyl acetate) matrix polymer that is reinforced with rigid cellulose nanofibers, and becomes very flexible when exposed to water. A direct-write CO2 laser was used to pattern structures in this chemical- and temperature-sensitive material. Tensile testing of laser-cut, micron-scale nanocomposite beams was performed using a custom-built tensile tester. These samples displayed a significant reduction in Young's modulus from 4.1 GPa to 6.1 MPa when the nanocomposite was exposed to phosphate buffered saline. Additionally, the modulus change was observed to be reversible upon drying of soaked tensile samples. As a well-suited application of this nanocomposite, cortical probes utilizing this material as a substrate were fabricated. Gold-coated, dual-shank cortical probes utilizing this nanocomposite as a substrate were shown to record action potentials from a single neuron in a cockroach brain.

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A bio-inspired, chemo-responsive polymer nanocomposite for mechanically dynamic microsystems

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Keywords

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