An overview of surface-enhanced Raman scattering substrates by pulsed laser deposition technique: fundamentals and applications

Abstract

Graphical abstract Metallic nanoparticles (NPs), as an efficient substrate for surface-enhanced Raman scattering (SERS), attract much interests because of their various shapes and sizes. The appropriate size and morphology of metallic NPs are critical to serve as the substrate for achieving an efficient SERS. Pulsed laser deposition (PLD) is one of the feasible physical methods employed to synthesize metallic NPs with controllable sizes and surface characteristics. It has been recognized to be a successful tool for the deposition of SERS substrates due to its good controllability and high reproducibility in the manufacture of metallic NPs. This review provides an overview about the recent advances for the preparation of SERS substrates by PLD technique. The influences of parameters on the sizes and morphologies of metallic NPs during the deposition processes in PLD technique including laser output parameters, gas medium, liquid medium, substrate temperature, and properties of 3D substrate are presented. The applications of SERS substrates produced by PLD in the environmental monitoring and biomedical analysis are summarized. This knowledge could serve as a guideline for the researchers in exploring further applications of PLD technique in the production of SERS substrate.

Antibacterial Properties of Silver Nanoclusters with Carbon Support on Flexible Polymer

“…The formation of PDMS-noble metal nanocomposite and noble metal nanostructures revealed interesting properties for SERS analysis [ 44 ]. The heating of such structures resulted in formation of pattern which exhibited surface plasmon resonance effect [ 45 , 46 ], the effect which may also influence the antibacterial results significantly. On the contrary, carbon nanolayers exhibit interesting biocompatible properties, either in a form of isolated clusters or layers [ 47 , 48 , 49 ].…”

Performance enhancement strategies for surface plasmon resonance sensors in direct glucose detection using pristine and modified UiO-66: effects of morphology, immobilization technique, and signal amplification

“…Simultaneously, the light excites an LSPR on the AuNp embedded in UiO-66. 88 This results in an increase in the EM eld generated through strong coupling between the SPP and LSPR. 38,39,88 When the UiO-66/Au active sites bind glucose, the interacting dipoledipole (i.e., O-H UiO-66/Au -O-H glucose ) becomes polarized under the inuence of the EM eld generated by the coupling of the SPP and LSPR.…”

“…88 This results in an increase in the EM eld generated through strong coupling between the SPP and LSPR. 38,39,88 When the UiO-66/Au active sites bind glucose, the interacting dipoledipole (i.e., O-H UiO-66/Au -O-H glucose ) becomes polarized under the inuence of the EM eld generated by the coupling of the SPP and LSPR. 89,90 In this state, glucose affects the optical conductivity of UiO-66, which will affect its permittivity and detachable by SPP-LSPR.…”

Electrochemical Synthesis, Magnetic and Optical Characterisation of FePd Dense and Mesoporous Nanowires

“…It also encompasses the generation of ‘hotspots’ which are regions of highly intense electric field The origin of chemical enhancement lies in the resonant effect arising from the analyte-substrate charge-transfer complex [ 39 ]. Although Au and Ag-based substrates have been established as the best for SERS, it is still crucial to develop alternative SERS-active substrates to make this technique more cost-effective, precise, and sustainable [ 40 ].…”