Journal
APPLIED PHYSICS LETTERS
Volume 102, Issue 6, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4791791
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Funding
- Singapore National Research Foundation under Exploratory/Developmental Grant [NMRC/EDG/1062/2012]
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In this letter, thermoacoustic resonance effect is predicted from theoretical analysis with series resistor-inductor-capacitor resonance circuit model and then observed experimentally using muscle tissue illuminated by multi-pulse microwave source. Through model fitting, the circuit parameters are extracted to characterize quantitatively the resonant response of the tissue. Coherent demodulation is applied to obtain the enhanced signal-to-noise ratio and spatial information by treating tissue as a communication channel. This physical phenomenon shows significantly higher sensitivity than conventional single microwave pulse induced thermoacoustic effect, enabling the potential design of low-power thermoacoustic imaging device for portable and on-site diagnosis. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4791791]
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