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Investigation of physical properties of an object

  • US 9,164,033 B2
  • Filed: 10/12/2009
  • Issued: 10/20/2015
  • Est. Priority Date: 10/13/2008
  • Status: Active Grant
First Claim
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1. A method comprising:

  • applying to an object acoustic vibration localized in two or three dimensions in a plurality of regions in the object simultaneously but with different frequencies in each region;

    simultaneously illuminating the object with an illuminating electromagnetic wave that has a frequency in a range extending down from 30 THz, the vibration direction of the acoustic vibration having a component parallel to the propagation direction of the illuminating electromagnetic wave so that the acoustic vibration of the object in each of the plurality of regions generates a scattered electromagnetic wave including Doppler components shifted from the frequency of the illuminating electromagnetic wave by frequencies of the acoustic vibration and multiples thereof;

    receiving the scattered electromagnetic wave generated in each of the plurality of regions,deriving from the received, scattered electromagnetic wave data representing at least one characteristic of the Doppler components in respect of each region; and

    storing the derived data in respect of each region as image data representing an image.

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