Ultrasound signal

R. M. Lerner, S. R. Huang and K. J. Parker, Sonoelasticity images derived from ultrasound signals in mechanically vibrated tissues, Ultrasound Med. Biol., 1990, 16, 231-239. 

Roy et al. [8] reported ceramic reactions between various forms of alumina and phosphoric acid when the mixtures were subjected to an ultrasound signal. Though this method by itself did not produce a solid phosphate ceramic, the reactions themselves were an important step towards the formation of the ceramics. 

Similarly to the reciprocity that exists between electroosmosis and streaming potential (See Chapter V,5), there is a reciprocity between the ultrasonic waves and the alternating electric field generated by them. That is, the application of the alternating electric field to disperse systems results in the generation of an ultrasound signal, referred to as the electrosonic amplitude (ESA). The ESA is related to the dynamic electrophoretic mobility via a relationship similar to eq. (V.6), namely... 

Phospholipids can even be used as a material to make a model of a real cell. All you have to do is to take a suspension of phospholipids and to give it a good shake with an ultrasound signal of the appropriate wavelength. This forms liposomes which are comparable in structure to that shown in Figure 5.1 / Liposomes are used, for example, to study how different drugs may penetrate into a cell through the cell membrane. 

Kurz JH, Grosse CU, Reinhardt HW (2005) Strategies for reliable automatic onset time picking of acoustic emissions and of ultrasound signals in concrete. Ultrasonics 43(7) 538-546... 

Reflection of a high-frequency ultrasound signal at the skin surface and at the acoustic border between the corium and subcutis... 

R. Kuc and M. Schwartz, Estimating the acoustic attenuation coefficient slope for liver from reflected ultrasound signals, IEEE Trans. Sonics Ultrason., vol. SU-26, pp. 353-362, Sept. 1979. 

In Ultrasound computed tomography, the interaction between ultrasound wave and the body is used to determine the distribution of sound velocity c and the tissue density p. Ultrasound signals are stimulated and received by piezoelectric transducers. Received data is also processed by above mentioned algorithms, i.e by applying Fourier transform algorithm in order to reconstruct internal stmctures of the body as indicated in the following diagram ... 

In the previous section we showed how a sinusoidal voltage pulse generates sinusoidal pulses of sound that appear to come from the electrodes. These ultrasound signals are measured in practice by attaching a pressure transducer to the material behind one of the electrodes. Two parameters can be obtained from this measurement the amplitude of the sound wave and the phase of the wave relative to the applied sinusoidal voltage. 

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