Aligned carbon nanotubes as polarization-sensitive, molecular near-field detectors.

نویسندگان

  • Ertugrul Cubukcu
  • Fatih Degirmenci
  • Coskun Kocabas
  • Mariano A Zimmler
  • John A Rogers
  • Federico Capasso
چکیده

Near-field scanning optical microscopes are widely used in imaging of subwavelength features in various material systems and nanostructures. For a variety of applications, polarization-sensitive near-field probes can provide valuable information on the nature and symmetry of the imaged nanoparticles and emitters. Conventional near-field optical microscopy lacks in-plane polarization sensitivity. Here, we use aligned single-wall carbon nanotubes as polarization-sensitive molecular scale probes to image the transverse near-field components of an optical Hertzian dipole antenna. Because of the Raman "antenna effect" in carbon nanotubes, only the near-field components along the nanotube axis are detected. These findings demonstrate that aligned carbon nanotubes can be used as polarization-sensitive near-field detectors.

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عنوان ژورنال:
  • Proceedings of the National Academy of Sciences of the United States of America

دوره 106 8  شماره 

صفحات  -

تاریخ انتشار 2009