Monolithic multilayer microfluidics via sacrificial molding of 3D-printed isomalt.

Monolithic multilayer microfluidics via sacrificial molding of 3D-printed isomalt.
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通过3D打印异构的牺牲成型单层微流体。

DOI:
10.1039/c4lc01392a
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发表时间:
2015-04-07
期刊:
影响因子:
6.1
通讯作者:
Bhargava R
Bhargava R
中科院分区:
工程技术1区
文献类型:
--
作者:
Gelber MK;Bhargava R

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在这里,我们展示了一种通过在水溶性的独立牺牲模具周围浇铸可固化树脂来创建多层或3D微流体的方法。我们使用专用的3D打印机来制作糖醇异麦芽酮糖醇的自支撑细丝,然后用透明的环氧树脂回填。溶解牺牲模具留下圆柱形通道以及输入和输出端口的网络。我们使用这种技术来制造一个组合混合器,能够产生8个组合的两种流体的比例范围从1:100到100:1。这种方法允许在微流体芯片设计上快速迭代,并且能够使用使用常规软光刻无法访问的几何形状和材料。在硬介质和软介质中在所有三个维度上精确图案化圆形通道的能力可以证明能够用于许多器官芯片系统。
Here we demonstrate a method for creating multilayer or 3D microfluidics by casting a curable resin around a water-soluble, freestanding sacrificial mold. We use a purpose-built 3D printer to pattern self-supporting filaments of the sugar alcohol isomalt, which we then back-fill with a transparent epoxy resin. Dissolving the sacrificial mold leaves a network of cylindrical channels as well as input and output ports. We use this technique to fabricate a combinatorial mixer capable of producing 8 combinations of two fluids in ratios ranging from 1 : 100 to 100 : 1. This approach allows rapid iteration on microfluidic chip design and enables the use of geometry and materials not accessible using conventional soft lithography. The ability to precisely pattern round channels in all three dimensions in hard and soft media may prove enabling for many organ-on-chip systems.
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