Surface Enhanced Raman
 |
 |
 |
Left: Surface Enhanced Raman Spectroscopy (SERS) with silver coated opaline structure.
Middle: A suspension with CNT is placed on the platform.
Right: The Raman signature of SWCNT clearly appears when the sample is tilted such that surface plasmons are excited (25o in this example).
 |
 |
Similarly, one may explore enhanced Raman scatterings with array of holes.
Left: An array of holes in anodized aluminum oxide. The hole pitch was 90 nm.
Right: The peak intensity is increased when the sample is tilted. Shown are two Raman lines from B. subtilis (a known Anthrax simulant). The inset exhibits Raman peak enhancement for SWCNT.