Pol Grasland-Mongrain edited Results.tex  over 8 years ago

Commit id: cf36bb6b81a5a57b8881720d6cbd0af0b3473c42

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Figure \ref{Comparaison}-(C-D) illustrates Z-component map 8 milliseconds after excitation, when excited with a 100\% and 50\% amplitude in the coil respectively (note that (C) and (A) are identical). Average displacement in the region of interest is equal to 3.3 $\mu$m in the first case and 1.3 $\mu$m in the second case: shear wave amplitude is roughly divided by two when excitation amplitude is divided by two.  Figure \ref{Comparaison}-(E-F) illustrates Z-component map 8 milliseconds after excitation, excitation  in a 5\% salt medium and 7 milliseconds after excitation in  a 2\% medium respectively (note that (E) and (A) are identical). Average displacement in the region of interest is equal to 3.3 $\mu$m in the first case and 1.4 $\mu$m in the second case: when electrical conductivity of the medium decreases, shear wave amplitude decreases roughly by a same factor. Figure \ref{Comparaison}-(G-H) illustrates Z-component map 7 milliseconds after excitation, when excited with a 100\% and a -100\% amplitude in the coil respectively (note that (G) and (D) are identical). Average displacement in the region of interest is equal to 1.3 $\mu$m in the first case and -1.4 $\mu$m in the second case: displacement amplitude is inverted when excitation is inverted.