Functional Polymer Sheet Patterning Using Microfluidics
Functional Polymer Sheet Patterning Using Microfluidics
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DOI：
10.1021/la501723n
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发表时间：
2014-07-22
期刊：
影响因子：
3.9
通讯作者：
Hwang, Dae Kun
中科院分区：
文献类型：
--
作者：
Li, Minggan;Humayun, Mouhita;Hwang, Dae Kun
基于聚二甲基硅氧烷(PDMS)的微流体为先进材料的合成提供了一种新的途径。虽然PDMS已被成功地应用于广泛的工业应用中，但由于机械性能较弱，通道通常具有较低的长径比(AR)，从而产生具有类似低AR的微粒。通过将沟道宽度增加到近1 cm，AR增加到267，并实施流动光刻，我们能够建立狭缝沟道光刻。这不仅允许我们合成具有多尺度特征和可调化学各向异性的片状材料，而且还允许我们以一步、高通量的方式制造功能层状片状结构。我们展示了该技术在各种应用中的潜在作用，如具有微纳尺度特征的平面材料的合成、表面形貌、管状和3D层状水凝胶组织支架的构建以及射频识别(RFID)标签的一步形成。该方法为功能片材的合成和片材系统的制作提供了一条新的途径。
Poly(dimethylsiloxane) (PDMS)-based microfluidics provide a novel approach to advanced material synthesis. While PDMS has been successfully used in a wide range of industrial applications, due to the weak mechanical property channels generally possess low aspect ratios (AR) and thus produce microparticles with similarly low ARs. By increasing the channel width to nearly 1 cm, AR to 267, and implementing flow lithography, we were able to establish the slit-channel lithography. Not only does this allow us to synthesize sheet materials bearing multiscale features and tunable chemical anisotropy but it also allows us to fabricate functional layered sheet structures in a one-step, high-throughput fashion. We showcased the technique's potential role in various applications, such as the synthesis of planar material with micro- and nanoscale features, surface morphologies, construction of tubular and 3D layered hydrogel tissue scaffolds, and one-step formation of radio frequency identification (RFID) tags. The method introduced offers a novel route to functional sheet material synthesis and sheet system fabrication.