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Programmable Coding Acoustic Topological Insulator.

Jian-Ping Xia1, Ding Jia1, Hong-Xiang Sun1

  • 1Research Center of Fluid Machinery Engineering and Technology, Faculty of Science, Jiangsu University, Zhenjiang, 212013, China.

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Summary
This summary is machine-generated.

Researchers developed a programmable acoustic topological insulator using digital elements "0" or "1" for reconfigurable acoustic paths. This innovation enables intelligent control and automatic manipulation of sound propagation for advanced acoustic devices.

Keywords:
acoustic topological insulatorslogic gatesprogrammable coding devicespseudospin-dependent edge modes

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Area of Science:

  • Physics
  • Acoustics
  • Materials Science

Background:

  • Topological acoustics offers unique backscattering-immune edge modes.
  • Controlling acoustic propagation paths with reconfigurability and intelligentization remains a challenge.

Purpose of the Study:

  • To propose and demonstrate a programmable acoustic topological insulator for reconfigurable and intelligent acoustic path control.
  • To overcome the limitations of current topological acoustic systems in terms of dynamic control.

Main Methods:

  • Utilized honeycomb-lattice sonic crystals composed of cylindrical rods with varying diameters to create digital elements '0' and '1'.
  • Engineered pseudospin-dependent edge mode transformations at the interfaces of digital elements for path control.
  • Experimentally fabricated a unit with an air cylinder for automatic '0' or '1' state manipulation.

Main Results:

  • Demonstrated automatic control of acoustic propagation paths by programming digital sequences.
  • Successfully designed topological insulators with programmable functionality.
  • Fabricated three digital acoustic devices: a single-pole double-throw switch, a single-pole single-throw switch, and a tunable logic gate.

Conclusions:

  • The proposed programmable topological insulators enable intelligent acoustic devices with reconfigurable functionalities.
  • This work paves the way for advancements in integrated acoustics, acoustic security, and information processing.