【摘要】 在水介质中操纵由气泡或非极性溶剂构成的液滴在材料科学和工业生产中非常重要，使用纳秒激光在铝片表面上制备一种具有双圆轨结构的微器件作为储气器，当气泡注入到小圆中后会向小圆边界扩散，直到与边界接触产生拉普拉斯压力。这种压力成为主要驱动力驱动气泡沿轨道方向运输到另一端圆点位置，直到两圆的气泡体积相匹配，达到稳定的状态。此外，探究双圆轨相关参数对气泡运输效率的影响，通过改变双圆轨的轨道宽度和长度、圆的直径，可实现气泡的固定和单向运输。利用双圆轨微器件的特点，设计复杂的气泡运输轨道，其在微流体操控方面如药物运输、气体催化、气泡收集等展现出较大的应用潜能。更多还原

【Abstract】 Manipulating droplets composed of nonpolar solvents or bubbles in aqueous media is crucial in materials science and industrial production. In this study, a dual-circular track microdevice is prepared on an aluminum substrate surface using a nanosecond laser as a gas storage system. When the bubbles are injected onto the smaller circular, they diffuse toward the boundaries until a Laplace pressure is generated. The generated Laplace pressure, as the main driving force,can transport the bubbles along the trajectory toward the opposite circular point, thereby achieving a stable state when the bubbles from both circles match. Additionally, the effects of various parameters of the dual-circular track on the efficiency of bubble transportation are investigated. By altering the track width and length, as well as the diameter of two circles,fixed and unidirectional transportations of bubbles can be achieved. Based on the characteristics of the dual-circular track microdevice, complex bubble transportation trajectories are designed. These trajectories significantly benefit microfluidic manipulation, such as drug delivery, gas catalysis, and bubble accumulation.更多还原