Progress on acoustic radiation force derived flexible manipulation. (A) Stable particles patterning with stand acoustic wave field [80]. (B) Circular, slanted-finger IDTs can generated adjustable directional acoustic waves by changing the frequency of excitation currency, change on frequency causes excitation area on the IDT changes, which cause propagation direction change and can achieve flexible manipulation [82]. (C) Harmonic IDTs composed of N individual transducers for harmonic SAWs derives selective and reversible assembly of colloidal crystals or cells by Fourier-synthesized harmonic waves [84].