Low-cost, mass-producible nanostructured surface on flexible substrate with ultra-thin gold or silver film for SERS applications

Microplasma-printed Au-based SERS sensing platform for ultra-sensitive chemical analyte detection

“…Currently, diverse approaches have been applied to fabricate Au or Ag-based SERS substrates, including physical vapor deposition, chemical etching, electron beam lithography, template deposition, etc. 8,9 Despite the remarkable progress achieved to date, limitations related to the tedious and timeconsuming process, need for expensive and highly specialized equipment, or uncontrolled particle deposition still remain. In recent years, novel strategies were developed to enrich the structural diversity of Au nanostructures on substrates, like PVP-assisted thermodynamic control methods, 10 sacrificial colloidal monolayer templates, 11 convective assembly of binary Au nanoarrays, 12 and surface self-polishing etching and regrowth.…”