Аннотация:Giant Raman scattering in the metal nanostructures that is known as
surface-
enhanced Raman scattering (SERS) was discovered in the last quarter
of the twentieth century. It might be the most important discovery in the
optics at the end of the century. SERS effect is observed when the investigated
substance is deposited onto metal nanoparticles (NPs), clusters of the
particles, rough metal surfaces (e.g., chemical etching electrodes), and semicontinuous
metal films. SERS has witnessed many successes over the past
three decades, owing particularly to its simplicity of use as well as its highly
multiplexing capability in biomedical investigations [1]. SERS has emerged
as a promising nano-sensing technique for in vivo diagnostics. This chapter
provides an overview of SERS and its applicability in the field of biosensing.
This chapter is divided up as follows: First, the fundamental mechanisms
of Raman scattering and SERS are briefly discussed. Second, an assortment
of preclinical and clinical SERS applications is discussed. Third, different
technologies for SERS-active plasmonic substrates preparation are described.
Finally, we consider a new phenomenon associated with the giant enhancement
of Raman scattering in the profiled dielectric film.