Thermophoresis: microfluidics characterization and separation
Thermophoresis: microfluidics characterization and separation
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DOI：
10.1039/c002057e
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发表时间：
2010-01-01
期刊：
影响因子：
3.4
通讯作者：
Piazza, Roberto
中科院分区：
文献类型：
--
作者：
Vigolo, Daniele;Rusconi, Roberto;Piazza, Roberto
我们表明，热泳，即由热梯度驱动的质量流，可用于利用合适的温度控制策略来驱动微流体装置中的粒子运动。由于其对颗粒/溶剂界面特性的高敏感性，与标准颗粒操纵技术相比，该方法在选择性方面具有多种优势。此外，我们表明，通过添加特定的电解质并利用其不同的热响应性产生的额外热电效应，可以实现将粒子选择性驱动到冷侧或热侧。
We show that thermophoresis, i.e., mass flow driven by thermal gradients, can be used to drive particle motion in microfluidic devices exploiting suitable temperature control strategies. Due to its high sensitivity to particle/solvent interfacial properties, this method presents several advantages in terms of selectivity compared to standard particle manipulation techniques. Moreover, we show that selective driving of particles to the cold or to the hot side can be achieved by adding specific electrolytes and exploiting the additional thermoelectric effect stemming from their differential thermal responsiveness.