Carbon nanotube vs carbon nanofiber

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Discussion Overview

The discussion centers on the differences and similarities between carbon nanotubes and carbon nanofibers, exploring their structures and characteristics. Participants share their understanding and experiences related to these materials, touching on theoretical and conceptual aspects.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant seeks clarification on whether carbon nanofibers are bundles of nanotubes, chains of carbon particles, or something else entirely.
  • Another participant suggests that carbon nanofibers are essentially carbon nanotubes that lack perfect cylindrical shape.
  • A different viewpoint indicates that carbon nanotubes have atomic-scale dimensions, while carbon nanofibers are generally larger, with diameters ranging from tens to hundreds of nanometers.
  • One participant describes carbon nanofibers as cylindrical nanostructures with graphene layers arranged in various configurations, noting that those with perfect cylindrical shapes are classified as carbon nanotubes.

Areas of Agreement / Disagreement

Participants express differing views on the definitions and characteristics of carbon nanotubes and carbon nanofibers, indicating that the discussion remains unresolved with multiple competing perspectives.

Contextual Notes

Participants reference specific dimensions and structural characteristics, but there are no consensus definitions or clarifications on the terminology used for these materials.

TechnoPagan
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I understand what a carbon nanotube is. I have some experience with geodesic domes and the way those shapes can be changed. I keep hearing more and more about carbon nanofibers but I've never seen it explained. Is a carbon nanofiber a bundle of nanotubes, chains of carbon particles or something different.

Thanks
 
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I think carbon nanofibers are actually carbon nanontubes with imperfect cylindricity.
 
perhaps my impression is incorrect, but, to me, a carbon nanotube can have atomic-scale dimensions (diameters up to, say a few nanometers) while a nanofiber is typically larger (diameters in the tens to hundreds of nanometers).
 
Carbon nanofibers (CNFs), vapor grown carbon fibers (VGCFs), or vapor grown carbon nanofibers (VGCNFs) are cylindric nanostructures with graphene layers arranged as stacked cones, cups or plates.

Carbon nanofibers with graphene layers wrapped into perfect cylinders are called carbon nanotubes.

First sentancte of the wikipedia article on Carbon Nanofiber
 

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