ABSTRACT
In studies of small amounts of molecules, conventional infrared (IR) spectroscopy suffers from relative low molecular IR absorption signals compared to background noise. One way to increase sensitivity is to use field-enhanced spectroscopy techniques as surface-enhanced infrared spectroscopy (SEIRS). In this chapter, we introduce two approaches to the SEIRS method: surface-enhanced infrared absorption (SEIRA) using metal nanoparticle films and SEIRS using well-defined resonant metal nanoparticles (nano antenna-assisted SEIRS with individual nanoantennas, multimers, or antenna arrays, respectively).
