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slip-saw.jpg
    
  Appears In
      
      Not Letting It Slip By: NIST Discovery Could Increase Accuracy in Measuring Blood Flow for Cancer Diagnosis, Other Applications
      
            Surface acoustic waves (SAW) travel through a microfluid confined to a cavity or microchannel and are then analyzed by the receiver. Both the acoustic-wave emitter (SPUDT)  and receiver (IDT) are built on a piezoelectric crystal that lies just beneath the bottom wall of the cavity. The amount of acoustic energy absorbed by the fluid (dark blue) helps reveal the viscosity and other physical properties of the fluid.

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