@article{aksak2007friction,
  title = {Friction of partially embedded vertically aligned carbon nanofibers inside elastomers},
  journal = {Applied Physics Letters},
  volume = {91},
  number = {6},
  pages = {061906},
  publisher = {AIP},
  year = {2007},
  author = {Aksak, Burak and Sitti, Metin and Cassell, Alan and Li, Jun and Meyyappan, Meyya and Callen, Phillip}
}