NEAR-FIELD RAMAN SPECTROSCOPY OF INDIVIDUAL SINGLE-WALLED CARBON NANOTUBES

ACHIM HARTSCHUH, NEIL ANDERSON, LUKAS NOVOTNY
2004 International Journal of Nanoscience  
Near-field Raman spectroscopy with high spatial resolution is used to study singlewalled carbon nanotubes (SWNT) within dense samples. A sharp, laser irradiated metal tip acts as a near-field excitation source causing an enhanced Raman signal within close proximity of the tip. We present optical images of different Raman modes with a spatial resolution better than 15 nm. Local spectroscopy allows us to identify and distinguish tubes with different structures on the nanometer-scale and to
more » ... scale and to observe variations within the spectrum of individual tubes.
doi:10.1142/s0219581x04002164 fatcat:lo7uj37oh5hxvcjxwfiybcdoh4