Figure 6.

Schematic representation of the QCM data analysis code implemented in MATLAB. In the inset figure on the left upper side, one can see the structure of the applied model where the QCM chip was covered by one viscoelastic film consisted of the deposited polymer chains. The used equations of the Voigt-based model can be seen in the scheme⁵², where ρ_Q and h_Q are the density and thickness of the crystal respectively, ρ_B and η_B are the density and viscosity of the bulk liquid as well as ω_n is the angular frequency of the oscillation at a given n overtone. The hydrated thickness, density, shear viscosity and shear elastic modulus of the examined adlayer are represented by d_A, ρ_A, η_A and µ_A, respectively. In the calculation of the error function χ² the Δf_n^m, Δf_n^c as well as ΔD_n^m, ΔD_n^c are the measured and computed frequency and dissipations, respectively, the std values correspond to the standard deviations of the measured frequencies and dissipation at the baseline and k denotes the highest overtone number.