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Second harmonic acoustic responses induced in matter by quasi continuous radiofrequency fields.
Appl. Phys. Lett. 103:153706 (2013)
Publ. Version/Full Text Volltext
DOI
We subjected conductive matter and tissue to intermittent continuous-wave radiofrequency fields and investigated whether acoustic responses could be recorded. By placing samples in the near-field of the excitation, we observed frequency-domain acoustic responses from tissues responding to CW radiofrequency excitation. Frequency analysis revealed the generation of 2nd harmonic mechanical waves. This discovery of non-linear responses can lead to alternative measurement concepts of CW radiofrequency deposition in matter and tissues. We offer the theoretical mainframe and discuss sensing applications involving the direct measurement of second harmonic responses representative of CW RF energy deposition in matter.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Thermoacoustic Tomography ; Biological Tissues ; Breast-cancer ; In-vivo
ISSN (print) / ISBN
0003-6951
e-ISSN
1077-3118
Journal
Applied Physics Letters
Quellenangaben
Volume: 103,
Issue: 15,
Article Number: 153706
Publisher
American Institute of Physics (AIP)
Non-patent literature
Publications
Reviewing status
Peer reviewed
Institute(s)
Institute of Biological and Medical Imaging (IBMI)