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|a eng
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|a Wondraczek, Katrin
|e verfasserin
|4 aut
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|a Acoustic second harmonic generation from rough surfaces under shear excitation in liquids
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|c 2004
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|a Date Completed 10.04.2006
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|a Date Revised 02.11.2004
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a Emission of compressional acoustic waves at the second harmonic frequency (second harmonic generation, SHG) is possible from rough surfaces undergoing oscillatory shear in liquids. This nonlinear response is a consequence of the inertial term in the Navier-Stokes equation. On a corrugated surface, the streamlines of the sheared liquid are not strictly parallel to the surface, leading to variation of pressure along the streamlines and a concomitant Bernoulli pressure. Being quadratic in speed, the Bernoulli pressure contains a static term and a term at the second harmonic frequency, 2omega. Pressure fluctuations at 2omega generate compressional waves
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|a Journal Article
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|a Bund, Andreas
|e verfasserin
|4 aut
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|a Johannsmann, Diethelm
|e verfasserin
|4 aut
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 20(2004), 23 vom: 09. Nov., Seite 10346-50
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|g volume:20
|g year:2004
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|g day:09
|g month:11
|g pages:10346-50
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