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Moving Droplets in 3D Using Light
Advanced Materials ( IF 27.4 ) Pub Date : 2018-07-08 , DOI: 10.1002/adma.201801821 Yang Xiao 1 , Sara Zarghami 1 , Klaudia Wagner 1 , Pawel Wagner 1 , Keith C. Gordon 2 , Larisa Florea 3 , Dermot Diamond 3 , David L. Officer 1
Advanced Materials ( IF 27.4 ) Pub Date : 2018-07-08 , DOI: 10.1002/adma.201801821 Yang Xiao 1 , Sara Zarghami 1 , Klaudia Wagner 1 , Pawel Wagner 1 , Keith C. Gordon 2 , Larisa Florea 3 , Dermot Diamond 3 , David L. Officer 1
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The emulation of the complex cellular and bacterial vesicles used to transport materials through fluids has the potential to add revolutionary capabilities to fluidic platforms. Although a number of artificial motile vesicles or microdroplets have been demonstrated previously, control over their movement in liquid in 3D has not been achieved. Here it is shown that by adding a chemical “fuel,” a photoactive material, to the droplet, it can be moved in any direction (3D) in water using simple light sources without the need for additives in the water. The droplets can be made up of a range of solvents and move with speeds as high as 10.4 mm s−1 toward or away from the irradiation source as a result of a light‐induced isothermal change in interfacial tension (Marangoni flow). It is further demonstrated that more complex functions can be accomplished by merging a photoactive droplet with a droplet carrying a “cargo” and moving the new larger droplet to a “reactor” droplet where the cargo undergoes a chemical reaction. The control and versatility of this light‐activated, motile droplet system will open up new possibilities for fluidic chemical transport and applications.
中文翻译：
使用光在3D中移动液滴
用于通过流体传输材料的复杂细胞和细菌囊泡的仿真具有为流体平台增加革命性功能的潜力。尽管先前已经证明了许多人造运动囊泡或微滴，但尚未实现对其在3D液体中的运动的控制。此处显示，通过向液滴中添加化学“燃料”（一种光敏材料），可以使用简单的光源在水中将其沿任何方向（3D）移动，而无需在水中添加添加剂。液滴可由多种溶剂组成，并以高达10.4 mm s -1的速度移动由于界面张力的光致等温变化（Marangoni流）而朝向或远离辐照源。进一步证明，通过将光敏液滴与载有“货物”的液滴合并，并将新的较大液滴移至“反应器”液滴，从而使货物进行化学反应，可以实现更复杂的功能。这种光活化的运动性液滴系统的控制性和多功能性将为流体化学物质的运输和应用开辟新的可能性。
更新日期：2018-07-08
中文翻译：
使用光在3D中移动液滴
用于通过流体传输材料的复杂细胞和细菌囊泡的仿真具有为流体平台增加革命性功能的潜力。尽管先前已经证明了许多人造运动囊泡或微滴，但尚未实现对其在3D液体中的运动的控制。此处显示，通过向液滴中添加化学“燃料”（一种光敏材料），可以使用简单的光源在水中将其沿任何方向（3D）移动，而无需在水中添加添加剂。液滴可由多种溶剂组成，并以高达10.4 mm s -1的速度移动由于界面张力的光致等温变化（Marangoni流）而朝向或远离辐照源。进一步证明，通过将光敏液滴与载有“货物”的液滴合并，并将新的较大液滴移至“反应器”液滴，从而使货物进行化学反应，可以实现更复杂的功能。这种光活化的运动性液滴系统的控制性和多功能性将为流体化学物质的运输和应用开辟新的可能性。
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