The project "Commercial Substrates for Surface-Enhanced Raman Scattering" (K-SERS) aims to develop an improved commercial product based on an existing prototype. Years of research in the field of surface-enhanced Raman scattering (SERS) have led to a prototype with sensor properties comparable to commercial substrates, thus achieving a technology readiness level of 7. SERS is a highly sensitive method for detecting low concentrations of molecules, applicable in various fields such as medicine, environmental protection, and forensics. The prototype substrate consists of silicon nanostructures coated with metal, which, through surface plasmons, achieves significant amplification of the Raman signal intensity. The innovation lies in the specific synthesis of nanostructures, particularly in achieving a high density of nano-trees or nano-wires per unit area using the low-pressure chemical vapor deposition (LPCVD) method.