Gerhard Lindner

TL;DR: In this paper, an overview of the design of different surface acoustic wave (SAW) devices used for the sensing of liquids and the basic mechanisms of the interaction of SAWs with overlaying liquids are discussed.

TL;DR: The effective operating power range is two to three orders of magnitude less than current SAW devices, uniquely eliminating the need for amplifiers, and by using traveling waves to impart forces directly upon suspended microparticles, they can be separated by size.

TL;DR: In this paper, a method for investigating a structure and a structure for receiving and/or conducting a liquid or soft medium was proposed, the method comprising the steps of: a) exciting acoustic waves in the structure by means of at least one transmitter (3), b) converting at least a part of the energy associated with the acoustic waves (A) excited in a structure (2, 2a, 2b) into volume sound waves (B) of the medium (5), c) recharging the acoustic wave energy of the structure, and e) verifying whether a coating

TL;DR: In this article, a new acoustic sensor principle for coating detection within liquid-filled tubes and containers based on mode conversion of leaky Lamb waves is introduced, which is subdivided into the separate considerations of Lamb wave excitation, mode conversion and inverse mode conversion.

TL;DR: The Schlieren images prove this multi reflection within the acoustic waveguide, which confirms former considerations and calculations based on the receiver signal, and can be interpreted in a better manner.