Journal
ACS NANO
Volume 8, Issue 12, Pages 11958-11965Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn504898p
Keywords
bio-interface; neuron; microbial fuel cells; coatings; solvent-based process
Categories
Funding
- Stanford Interdisciplinary Graduate Fellowship
- Woods Institute for the Environment at Stanford University
- Direct For Biological Sciences
- Div Of Biological Infrastructure [1055112] Funding Source: National Science Foundation
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Biological cells often interact with their local environment through subcellular structures at a scale of tens to hundreds of nanometers. This study investigated whether topographic features fabricated at a similar scale would impact cellular functions by promoting the interaction between subcellular structures and nanomaterials. Crinkling of carbon nanotube films by solvent-induced swelling and shrinkage of substrate resulted in the formation of ridge features at the subcellular scale on both flat and three-dimensional substrates. Biological cells grown upon these crinkled CNT films had enhanced activity: neuronal cells grew to higher density and displayed greater cell polarization; exoelectrogenic micro-organisms transferred electrons more efficiently. The results indicate that crinkling of thin CNT films creates secondary mesoscale features that enhance attachment, growth, and electron transfer.
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