Using quartz plates as an example existance of the new modification of the Lamb waves is demonstrated. The waves have small vertical displacement, large shear-horizontal and longitudinal components, and elliptic polarization which is oriented parallel to the plate faces. Numerical calculations of the surface displacements and depth profiles show the particular polarization is maintained at any depth from free faces and for all plate thickness in the range h/λ = 0–1.7 (h - thickness, λ - wave length). Results of the measurements accomplished for four new modes and three plate thickness h/λ confirm that radiation of the waves into adjucent liquid (which is proportional to vertical displacement) is small, while viscoelestic loss of the same the waves (which is proportional to in-plane components) is large. This property makes the modified waves suitable for sensing liquids and ices. In particular, responses of the waves towards liquid viscosity and water-to-ice transformation are larger than those are for common Lamb waves approaching 27 and 50 dB, respectively, at about 30 MHz, 1500 cP, and 10 mm propagation path.

以石英板为例，证明了兰姆波的新修改的存在。波具有小的垂直位移、大的横向和纵向剪切分量以及平行于板面取向的椭圆偏振。表面位移和深度剖面的数值计算表明，特定极化在离自由面的任何深度以及 h/λ = 0-1.7（h - 厚度，λ - 波长）范围内的所有板厚度保持。对四种新模式和三种板厚 h/λ 完成的测量结果证实，波辐射到邻近液体中（与垂直位移成正比）很小，而相同波的粘弹性损失（与-平面组件）很大。这种特性使修改后的波适用于感测液体和冰。特别是，在大约 30 MHz、1500 cP 和 10 mm 传播路径下，波对液体粘度和水到冰转变的响应比普通兰姆波的响应大，分别接近 27 和 50 dB。