论文标题
微叶型控制无针头注射的热浪费液体喷气机的弹道能
Microuidics control the ballistic energy of thermocavitation liquid jets for needle-free injections
论文作者
论文摘要
用聚焦连续的波激光照明水溶液会产生液体的强烈局部加热，从而导致气泡成核，也称为热钻。在气泡的生长过程中，周围的液体通过喷嘴从约束微流体通道中排出，从而产生射流。使用超快速成像技术成像所得液体射流的特性。在这里，我们提供了射流形状和速度的现象学描述，并将它们与边界积分数值模型进行比较。我们定义参数态度，不同的喷射速度，锥度几何和液体体积，以最佳打印，注入和喷雾应用。这些结果对于基于微流体热浪费的无针喷射器的设计很重要。
Illuminating a water solution with a focused continuous wave laser produces a strong local heating of the liquid that leads to the nucleation of bubbles, also known as thermocavitation. During the growth of the bubble, the surrounding liquid is expelled from the constraining microfluidic channel through a nozzle, creating a jet. The characteristics of the resulting liquid jet was imaged using ultra-fast imaging techniques. Here, we provide a phenomenological description of the jet shapes and velocities, and compare them with a Boundary Integral numerical model. We define the parameter regime, varying jet speed, taper geometry and liquid volume, for optimal printing, injection and spray applications. These results are important for the design of energy-efficient needle-free jet injectors based on microfluidic thermocavitation.
