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Nanofiber

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File:N2 2.kesit.JPG
SEM image of nanofibers by Nano FMG.

Nanofibers are defined as fibers with diameters on the order of 100 nanometers. They can be produced by interfacial polymerization and electrospinning. Carbon nanofibers are graphitized fibers produced by catalytic synthesis.

File:N2 2.kesit.JPG
SEM image of nanofibers by Nano FMG.

Potential applications

  • Medical: Artificial organ components, Tissue engineering, Implant material, Drug delivery, Wound dressing, Medical textile materials.
  • Protective materials: Sound absorption materials, Protective clothings against chemical and biological warfare agents, Sensor applications for detecting chemical agents.
  • Energy: Batteries, Photovoltaic Cells, Polymer Electrolytes, Membrane Fuel Cells.
  • Textile: Sport Apparels, Sport Shoes, Climbing, Rainwear, Outerwear Garments, Baby Diapers.
  • Filtration: HVAC system filters, HEPA, ULPA High efficient filters, Air, oil, fuel filters for automotive, Filters for beverage, pharmacy, medical applications.
  • In one study, combined neural stem cells with carbon nanofibers triggered neural tissue regeneration in the brains of rats that had suffered a simulated stroke.[citation needed] On their own, neither nanofibers nor stem cells could heal the rats.
  • Napkins with nanofibers contain antibodies against numerous biohazards and chemicals that signal by changing color (potentially useful in identifying bacteria in kitchens).
  • In wound healing nanofibers assemble at the injury site and stay put, drawing the body's own growth factors to the injury site.
  • Nano FMG-Nano Fiber Membranes Group develops polymer nanofiber membranes and industrial electrospinning unit for nanofiber production.
  • Donaldson develops nanofiber filter media for new air and liquid filtration applications, such as vacuum cleaners.
  • Elmarco research centre develops unique Nanospider™ technology, designed for ease of use, scalability, modularity and flexibility in producing the highest quality nanofibers. Diameter is 50 - 500 nm. Application in filtration, the environment, cosmetics, medicine, hygiene, energy, IT, nanocomposites, composites and protective wear.

Other applications include industrial and high-tech applications for aerospace, capacitors, transistors, battery separators, energy storage, fuel cells and information technology.

Self-twisting

Nanofibers that self-braid have been studied at Harvard University. The effect is related to a balance between flexibility, adhesion, and evaporation of solvent. Potential applications include:[1]

  • Substances that can change optical properties on demand
  • Molecule capture and release for e.g. timed drug delivery
  • Energy storage
  • Adhesives

See also

  1. Electrospinning of Nanofibers: Thandavamoorthy Subbiah, G. S. Bhat, R. W. Tock, S. Parameswaran, S. S. Ramkumar, Journal of Applied Polymer Science, Volume 96, Issue 2 (p 557-569) http://www3.interscience.wiley.com/cgi-bin/fulltext/109925432/PDFSTART
  2. Self-assembled honeycomb polyurethane nanofibers: S. Thandavamoorthy, N. Gopinath, S. S. Ramkumar Journal of Applied Polymer Science Volume 101, Issue 5 , Pages 3121 – 3124. The Institute of Environmental and Human Health, Texas Tech University, Lubbock, Texas 79409-1163 Funded by: U.S. Army Research, Development and Engineering Command http://www3.interscience.wiley.com/cgi-bin/abstract/112657386/ABSTRACT
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  1. ^ Nests, Braids And Twists, On The Nano Scale
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