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This study explores using acoustic Bessel beams to control active spherical shells for delivery systems. Bessel beams offer unique manipulation capabilities compared to plane waves, enhancing controllability for acoustic tweezers.

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Area of Science:

  • Acoustic manipulation
  • Wave physics
  • Biomedical engineering

Background:

  • Active spherical shells are explored as carriers for drug, agent, or material delivery systems.
  • Acoustic radiation force is investigated as a driving mechanism for controlling these carriers.

Purpose of the Study:

  • To examine the controllability of acoustic radiation force exerted by zero-order Bessel beams on active spherical shells.
  • To compare the performance of Bessel beams with plane wave fields for manipulating active carriers.
  • To investigate the potential of Bessel beams for robust acoustic manipulation techniques.

Main Methods:

  • Modeling the interaction of zero-order acoustic Bessel beams with an active spherical elastic shell.
  • Simulating a spherical shell vibrated in its monopole mode by an internal piezoelectric actuator.
  • Analyzing the acoustic radiation force and consumed actuation power.

Main Results:

  • Zero-order Bessel beams demonstrate unique potentials for manipulating active carriers, surpassing plane wave fields.
  • Full manipulability conditions were investigated, highlighting Bessel beams' advantages.
  • The consumed power of the actuation system was a key factor considered.

Conclusions:

  • Bessel beams offer enhanced controllability for acoustic manipulation of active carriers.
  • This research paves the way for single-beam robust acoustic manipulation techniques.
  • Potential applications include advanced delivery systems, microswimmers, and acoustic trapper designs.