Abstract
Nanoplasmonic materials play a critical role in surface-enhanced Raman scattering (SERS) because they dictate the electromagnetic (EM) field confinement at the nanoscale and hence the SERS enhancements. These materials can be further engineered to maximize SERS sensitivity, even for analytes with no specific affinity to plasmonic surfaces. In this chapter, we discuss the various types and design strategies of nanoplasmonic materials and their platforms which are employed to boost SERS sensing performance. Four major approaches are outlined: (1) zero-dimensional to three-dimensional hotspot engineering for intense EM field confinement and interparticle plasmonic coupling, (2) physical confinement of liquid analytes on superhydrophobic SERS-active substrates, (3) concentration of gaseous analytes over hotspots using highly porous materials, and (4) development of unconventional nanoplasmonic materials including bimetallic configurations and hybrid systems. Finally, we finish this chapter by discussing current challenges in this research area.
| Original language | English |
|---|---|
| Title of host publication | Principles and Clinical Diagnostic Applications of Surface-Enhanced Raman Spectroscopy |
| Publisher | Elsevier |
| Pages | 33-79 |
| Number of pages | 47 |
| ISBN (Electronic) | 9780128211212 |
| DOIs | |
| Publication status | Published - Jan 1 2021 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2022 Elsevier Inc. All rights reserved.
ASJC Scopus Subject Areas
- General Chemistry
Keywords
- Analyte manipulation strategies
- Hotspot engineering
- Hybrid platforms
- Plasmonic materials
- Surface-enhanced raman scattering (SERS)