Application of Acoustic Bessel Beams for Handling of Hollow Porous Spheres

Mahdi Azarpeyvand, Mohammad Azarpeyvand

Research output: Contribution to journalArticle (Academic Journal)peer-review

16 Citations (Scopus)
283 Downloads (Pure)


Acoustic manipulation of porous spherical shells, widely used as drug delivery carriers and magnetic resonance imaging contrast agents, is investigated analytically. The technique used for this purpose is based on the application of high-order Bessel beams as a single-beam acoustic manipulation device, by which particles lying on the axis of the beam can be pulled toward the beam source. The exerted acoustic radiation force is calculated using the standard partial-wave series method, and the wave propagation within the porous media is modeled using Biot's theory of poro-elasticity. Numerical simulations are performed for porous aluminum and silica shells of different thickness and porosity. Results indicate that manipulation of low-porosity shells is possible using Bessel beams with large conical angles, over a number of broadband frequency ranges, whereas manipulation of highly porous shells can occur over both narrowband and broadband frequency domains.

Original languageEnglish
Pages (from-to)422-433
Number of pages12
JournalUltrasound in Medicine and Biology
Issue number2
Early online date15 Dec 2013
Publication statusPublished - Feb 2014


  • Acoustic manipulation
  • Bessel beam
  • Biot's theory
  • Microporous
  • Porous shell

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