Uniform distribution of Ag particles upon imprinted polymer grating for Raman signal enhancement

Self‐organized Polymer Wrinkles: A Lithography‐free Pathway for Surface‐enhanced Raman Scattering (SERS) Substrates

“…Interestingly, both the enhancement and the repeatability are comparable to the ones we previously observed on subwavelength gratings coated with the same thickness of silver, which were fabricated by nanoimprint lithography . Similar degree of repeatability has also been reported by others on nanoimprinted structures .…”

“…Also, the non‐directional and pseudo‐periodic nature of the structure can actually be an advantage over structures with a constant period: the varying periodicity behaves like a superposition of structures of several different periods, which broadens the range of angles at which the surface plasmon excitation may occur. Moreover, with the non‐directional structures, the polarization of the laser beam should not affect the enhancement, like with SERS structures that are periodic in one dimension only …”

Silicon Nanostructures for Molecular Sensing: A Review

“…To attain superior SERS activity, one needs to outline the proper structural parameters of the template like morphology of pSi, plasmonic NPs, and their arrangement and bimetallic NPs, etc. ,− The justification of pSi substrate in sensing has been proved by performing detection of mercaptobenzoic acid on AgNPs/pSi and AgNPs/polydimethyl­siloxane (PDMS) substrates . Indeed, it is evidenced that the pSi-based SERS substrate shows enhancements of >10 6 .…”

Plasma amplifiers: multiscale light-enhanced uniform SERS composite substrates for breaking through resonance limitations

“…Raman spectroscopy, a technique renowned for its capability to provide intricate insights into the compositional and structural attributes of specimens by characterizing the vibrational signatures of constituent molecules, has become a cornerstone in materials analysis. [1][2][3][4][5] To enhance Raman signals, nanostructured noble metal materials have gained immense popularity owing to their unique plasmonic properties. [6][7][8][9][10] Through nanoscale modulation of plasmons, surface-enhanced Raman spectroscopy (SERS) can easily enhance the Raman signal by more than six orders of magnitude.…”