Abstract

Faraday waves enable contactless, biocompatible particle and cell assembly, but current methods lack pattern flexibility and device portability. To address these challenges, this work proposes a miniaturized Faraday wave device for reconfigurable acoustic self-assembly on micropatterned Petri dishes. By designing culture dishes with microcolumn arrays of various geometries and synergistically tuning vibration parameters, precise control of assembly patterns was achieved. Experimental results reveal a clear synergistic mechanism among boundary conditions, artificial microstructures (including the arrangement, size, and shape of microcolumns), vibration frequency, and acceleration, enabling efficient pattern reconfiguration across a wide operating range (30-100   Hz, 1.3-2.0   g). Based on this principle, a miniaturized Faraday wave device integrating a vibration motor and drive module was developed to replace traditional bulky excitation systems. The proposed system significantly improves flexibility and integration, and supports versatile particle and cell assembly. This work provides a new technical strategy for programmable self-assembly in micro/nano manipulation and tissue engineering.