Microwave absorption properties of carbon nanocoils coated with highly controlled magnetic materials by atomic layer deposition

ACS Nano. 2012 Dec 21;6(12):11009-17. doi: 10.1021/nn304630h. Epub 2012 Dec 5.


In this work, atomic layer deposition is applied to coat carbon nanocoils with magnetic Fe(3)O(4) or Ni. The coatings have a uniform and highly controlled thickness. The coated nanocoils with coaxial multilayer nanostructures exhibit remarkably improved microwave absorption properties compared to the pristine carbon nanocoils. The enhanced absorption ability arises from the efficient complementarity between complex permittivity and permeability, chiral morphology, and multilayer structure of the products. This method can be extended to exploit other composite materials benefiting from its convenient control of the impedance matching and combination of dielectric-magnetic multiple loss mechanisms for microwave absorption applications.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Absorption
  • Aluminum Oxide / chemistry
  • Carbon / chemistry*
  • Ferrosoferric Oxide / chemistry*
  • Microwaves*
  • Nanoparticles / chemistry*
  • Nickel / chemistry
  • Permeability


  • Carbon
  • Nickel
  • Aluminum Oxide
  • Ferrosoferric Oxide