Spatial enhancement of Raman scattering images using moving-window two-dimensional auto-correlation spectroscopy

A Raman scattering image of a single-wall carbon nanotube (SWCNT) is further analyzed using SIMPLISM and moving-window two-dimensional auto-correlation spectroscopy (MW2DACS). The G band from the SWCNT (obtained from SIMPLISMA) is composed of Breit–Wigner–Fano and Lorentzian peak profiles. The SWCNT is identified as metallic from the broad Breit–Wigner–Fano peak shape. MW2DACS is successfully applied to the image with an enhancement in spatial resolution from 350 nm (image filtering using SWCNT G band) to 200 nm.