The role of surface roughness in surface enhanced raman spectroscopy (SERS): the importance of multiple plasmon resonances

Understanding the intrinsic water wettability of graphite

“…209,210 In this study, SERS causes the raw intensity of the PG spectrum to be significantly greater than the ZYA spectrum, manifesting as greater peak intensity for PG because of its rougher surface. Normalizing the data results in the spectrum of PG appearing smoother than the spectrum of ZYA although Raman data for both samples were taken on the same experimental setup using the same parameters.…”

“…Collision events between the incident ions and carbon surface will damage the sp 2 carbon lattice, effectively creating point defects with sp 3 -hybridized C-C bonding, vacancylike defects, and step edges. The number and size of defects can be precisely tuned by controlling the ion ( 112 Sn, 209 Bi, Ar, Mn, etc.) along with its energy.…”

Raman Spectroscopy

“…The important problems of interacting particles (aggregated colloids, for example), or bumps on a conducting plane (for which both interparticle coupling and coupling to the substrate are important) have only been treated via simple models. (71) These situations await the development of more sophisticated electrodynamic treatments. Since this discussion is not intended to be a critical review of SERS, the reader is referred to other articles for more detailed discussions of this point.…”

Surface enhanced spectroscopy

“…This is apparently the reason why the SERS signal in aggregated colloids is higher than that in solutions with isolated particles. preliminary study by Laor and Schatz [ 172 ] indicates that the local field is (53).This is the ratio of the "local laser intensity" versus the intensity of the incident beam. We chose this quantity since it is a scalar which gives a feeling for the primary field enhancement.…”