Recent progress on two-dimensional layered materials for surface enhanced Raman spectroscopy and their applications

Flexible SERS substrates for hazardous materials detection: recent advances

“…Several review articles presented throughout this review discussed the significance of various optical materials used in SERS studies. The short-range CM enhancement is due to the charge transfer mechanism between the analyte molecule and the substrate 29 . Noble-metal-free SERS materials, for example semiconductors (Si, GaAs and etc.)…”

2D van der Waals Heterojunction Nanophotonic Devices: From Fabrication to Performance

“…[109][110][111] For example, they are used as enhanced Raman spectrum detection substrates and surface plasmon resonance (SPR) sensitive detection platforms based on noble metal materials. [112] Thus, using vdWhs as the substrate for enhanced Raman spectroscopy to achieve optical sensitive detection is a current research hotspot. Compared with isolated 2D materials, a vdWhs-based surface enhanced Raman spectroscopy (SERS) platform has the following advantages:…”

Ultrahigh SERS activity of the TiO2@Ag nanostructure leveraged for accurately detecting CTCs in peripheral blood

“…14 SERS spectroscopy with the characteristics of non-destructive in situ detection, selective SERS enhancement, high detection sensitivity, and good signal anti-interference ability, [15][16][17] makes SERS technology widely utilized in various research fields such as biomedicine, nutrition, materials science, and chemistry. [18][19][20] Noble metal (Au, Ag, and Cu) SERS substrates have been deeply studied due to their ultrahigh SERS enhancement factors (EF) based on the localized surface plasmon resonance (LSPR) mechanism, 21 which produce a huge electromagnetic enhancement (EM) field, and make great contribution to the enhanced Raman signal. 22 Noble metal SERS bioprobes with targeted ligands have been designed for detecting various types of CTCs, and the LODs for CTCs can reach 1 cell per mL.…”