Acoustic Pulling with a Single Incident Plane Wave

Yan Meng, Xiao Li, Zixian Liang, Tsz Fai Jack Ng, Jensen Li

Research output: Contribution to journalJournal articlepeer-review

5 Citations (Scopus)


The rapid development of active acoustic metamaterials provides an alternative degree of freedom to manipulate scattering fields and acoustic radiation forces. With the multipole expansion method, acoustic radiation forces can be expanded in a series of coupling between adjacent pairs of scattering-field coefficients. Here, systems from two dimensional to one dimensional are explicitly considered. When shining a single acoustic plane wave, a necessary requirement to achieve negative force is that the particle has to be sufficiently active. A criterion of achieving the most negative or positive force by tuning the adjacent terms "in phase"or "out of phase"is derived. Thus, with the required scattering coefficients, the effective density and modulus corresponding to the largest pulling-pushing forces can be retrieved directly and function as a guide in the design of active metamaterials in one-dimensional systems. Our study can bridge the theoretical requirements of radiation force with the practical design of metamaterials.

Original languageEnglish
Article number014089
JournalPhysical Review Applied
Issue number1
Publication statusPublished - Jul 2020

Scopus Subject Areas

  • Physics and Astronomy(all)


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