Figure 2
From: Phononic Crystal Waveguide Transducers for Nonlinear Elastic Wave Sensing
Analytical results of real (blue lines) and imaginary (red lines) parts of the corrugation-induced wavevector shift \(\beta (f)\) for PC waveguides with \(2h\) = 10 mm and 2∈ = 3 mm. (a) Aluminium PC plate with \({\rm{\Lambda }}\) = 8.1 mm (\(2{f}_{0}\) = 200 kHz). (b) Aluminium PC plate with \({\rm{\Lambda }}\) = 5.7 mm (\(2{f}_{0}\) = 300 kHz). (c) ABS PC plate with \({\rm{\Lambda }}\) = 2.1 mm (\(2{f}_{0}\) = 200 kHz). (d) ABS PC plate with \({\rm{\Lambda }}\) = 1.4 mm (\(2{f}_{0}\) = 300 kHz).
