Hui-Lei Hou

1 Introduction Surface-enhanced Raman spectroscopy (SERS) has attracted tremendous attention due to its high sensitivity and non-destructive analysis for detecting trace species and single molecules.[1-5] Although the precise mechanism of the enhanced effect is still under argument, conventional SERS enhancement includes mainly two mechanisms, I) the electromagnetic mechanism (EM) generated by local surface plasmon resonance (LSPR) upon laser excitation at the surface of a noble metal...

Abstract Achieving stable and reliable 2D-2D van der Waals heterostructures remains challenging. The broadest strategy for synthesizing these heterostructures is growth or manually stacking one material on top of the other, yet it is inefficient. Here, we present a strategy for synthesizing covalently bonded MoS2-graphene heterostructures using organic linkers with two anchor sites at a low cost.

Two-dimensional (2D) materials and their van der Waals (vdW) heterostructures, particularly graphene and graphene/MoS2, have attracted intense attention due to their potential application in surface-enhanced Raman spectroscopy (SERS). Herein, we report how to modulate the SERS response of 2D materials. First, we demonstrate that SERS based on graphene materials is inversely proportional to the functionalization degree.