and no requirement for the targets' optical, magnetic, or charge properties [15; 16]. The non-contact trapping, separation, agglomeration, and patterning of micro-objects or anisotropic particles using the momentum effects of acoustic waves, namely the acoustic radiation force, have attracted increasing interests [16; 17; 18; 19; 20; 21; 22]. Dexterous manipulation of micro-particles have been realized by precursor swirling Rayleigh waves and 16-element, 64-element, or more elements transducer arrays recently [18; 23; 24; 25; 26]. However, the huge elements number of the transducer array makes the system quite complex and non-affordable for the extended application. Acoustic vortex with the rotating phase around its propagating axis also carries angular momentum, and can be used to rotate micro-particle [27; 28]. When it interacts with a scatterer, acoustic torque will be induced on the object. Continuous rotation of tile, syringe and other axisymmetric objects has been realized using acoustic vortex beam that is generated by thermoacoustic or individually addressed transducers [28; 29; 30; 31; 32]. Another way to rotate the micro-particle is employing the viscous torque resulted from the acoustic streaming in the viscous boundary layer around the particle [33; 34; 35]. The above-mentioned two methods are applicable to continuous rotation, especially spherical object, but are unable to stop at certain angular position [27; 28; 33; 34; 35]. For non-spherical particles, unbalanced acoustic radiation pressure on the surface may also induce an acoustic radiation torque depending on its angular position relative to the sound field [36; 37]. Besides the conventional vortex-based rotation, controlling the object orientation is also achievable with this kind of acoustic torque. Changing the orientation of the sound field, by the manner of mechanically shifting the wave direction or modulating the wave parameters (amplitude or frequency), the fibers, and other non-spherical particles will be driven to rotate and finally reach an equilibrium angular position [38; 39; 40; 41; 42; 43]. However, the resolution and controllability are limited for these demonstrated methods. For the method adjusting the propagation direction of standing wave with alternate excitation of several pairs of opposed transducers, the particle could only rotate like a step motor and the step angle \(180^{\circ}/\mathrm{N}\) is limited by the number of transducer pairs N [38; 39]. Particle rotation based on phase or frequency modulation strongly relies on the resonant modes of the employed acoustic chambers. So, the chamber should be elaborately designed with a proper Q-factor, which increases the system complexity and cost [38; 40; 41; 42; 43]. In addition, it is difficult to maintain the rotation speed due to the amplitude variations of different modes. Amplitude modulation, which rotates the particle by varying the amplitude ratio of incident waves, causes the fluctuations of radiation force strength and the corresponding constraint ability. As a result, the particles are easy to drift in the rotation process [38; 44]. Besides the above limitations, the desired sound fields in these methods are always filled with the whole device, which is not satisfying for rotating single particle or independently manipulate multiple particles [45]. Changing the orientation of a target sound field can be treated as generating a series of sound fields only with azimuth variations at different times. It is well known that sound field synthesis technique has the ability to produce any required sound field within a given region by imposing the required pressure on the region boundary [45; 46; 47]. Hence, this technique can be implemented multiple times to generate a rotating sound field. It is convenient to impose the required boundary pressure by adjusting the amplitude and phase of several transducers, and then the micro-particle can be rotated by the radiation torque with higher flexibility.