@ARTICLE{Kiełczyński_Piotr_New_2021,
 author={Kiełczyński, Piotr and Szalewski, Marek and Balcerzak, Andrzej and Wieja, Krzysztof},
 volume={vol. 46},
 number={No 1},
 journal={Archives of Acoustics},
 pages={17-24},
 howpublished={online},
 year={2021},
 publisher={Polish Academy of Sciences, Institute of Fundamental Technological Research, Committee on Acoustics},
 abstract={In this work we analyse basic characteristics of Love wave sensors implemented in waveguide structures composed of a lossy viscoelastic surface layer deposited on a lossless elastic substrate. It has to be noted that Love wave sensors working at ultrasonic frequencies have the highest mass density sensitivity \$S_σ^(v_p )\$ among all known ultrasonic sensors, such as QCM, Lamb wave or Rayleigh wave sensors. In this paper we have established an exact analytical formula for the mass density sensitivity \$S_σ^(v_p )\$ of the Love wave sensors in the form of an explicit algebraic expression. Subsequently, using this developed analytical formula, we compared theoretically the mass density sensitivity \$S_σ^(v_p )\$ for various Love wave waveguide structures, such as: (1) lossy PMMA surface layer on lossless Quartz substrate and (2) lossy PMMA on lossless Diamond substrate. The performed analysis shows that the mass density sensitivity \$S_σ^(v_p )\$ (real and imaginary part) for a sensor with a structure PMMA on Diamond is five times higher than that of a PMMA on Quartz structure. It was found that the mass density sensitivity \$S_σ^(v_p )\$ for Love wave sensors increases with the increase of the ratio: bulk shear wave velocity in the substrate to bulk shear wave velocity in the surface layer.},
 type={Article},
 title={New Theoretical Model for Mass Sensitivity of Love Wave Sensors},
 URL={http://journals.pan.pl/Content/119528/aoa.2021.136556.pdf},
 doi={10.24425/aoa.2021.136556},
 keywords={Love wave sensors, mass sensitivity, complex dispersion equation, viscoelastic layers},
}