Abstract
In this paper we will present a technique which allows us to record high-resolution acoustic images of biological specimens. The image is detected in the extremely near field of the object and the imaging, itself, is accomplished in a thin liquid layer containing 1 µm polystyrene spheres. The response of the spheres to the “radiation pressure” of the acoustic fields traversing the liquid layer permits the spheres to condense into a pattern which produces the acoustic image. The force on an individual sphere as used in our device resulting from the radiation pressure can be calculated and by means of this calculation it is easy to optimize the magnitude and show that it is linearly proportional to the acoustic intensity — an effect necessary for our system of imaging.
This work was supported by the John A. Hartford Foundation, Inc.
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References
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Cunningham, J.A., Quate, C.F. (1974). High-Resolution Acoustic Imaging by Contact Printing. In: Green, P.S. (eds) Acoustical Holography. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-0827-1_6
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DOI: https://doi.org/10.1007/978-1-4757-0827-1_6
Publisher Name: Springer, Boston, MA
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