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Non-planar PDMS microfluidic channels and actuators: a review
Lab on a Chip ( IF 6.1 ) Pub Date : 2017-08-18 00:00:00 , DOI: 10.1039/c7lc00523g
Yongha Hwang 1, 2, 3 , Rob N. Candler 4, 5, 6, 7
Affiliation  

This review examines the state of the art for manufacturing non-planar miniature channels and actuators from PDMS, where non-planar structures are defined here as those beyond simple extrusions of 2D designs, either with rounded or variable cross sections or with an emergence of the channel trajectory out-of-plane. The motivation for 3D PDMS structures and advances in their fabrication are described, focusing on geometries that were previously unachievable through conventional microfabrication. The motivation for non-planar microfluidic channels and actuators is first discussed and the existing literature is grouped into general fabrication themes and described. The structures are organized by their method of fabrication and evaluated based on their relevant properties, including the capability of producing structures with complex geometry, automation of the fabrication process, and minimum feature size. Additional properties are included for work in the more recently emerging field of non-planar PDMS actuators, where the feature size, actuation stroke, and actuation method are the key parameters of interest. In particular, this review considers the impact from recent advances in additive manufacturing, which now allow creation of truly arbitrary 3D structures down to ∼100 μm size scales.

中文翻译:

非平面PDMS微流体通道和执行器:综述

这篇综述考察了PDMS制造非平面微型通道和执行器的最新技术,其中非平面结构在此定义为超出2D设计的简单拉伸的那些,具有圆形或可变横截面,或者出现了非平面结构。平面外的通道轨迹。描述了3D PDMS结构的动机及其制造进展,重点介绍了以前通过常规微加工无法实现的几何形状。首先讨论了非平面微流体通道和执行器的动机,并将现有文献归纳为一般制造主题并进行了描述。这些结构通过其制造方法进行组织,并根据其相关属性进行评估,包括生产具有复杂几何形状的结构的能力,制造过程的自动化,以及最小的特征尺寸。在最近出现的非平面PDMS致动器领域中,还包括其他工作特性,其中特征尺寸,致动行程和致动方法是重要的关键参数。尤其是,此审查考虑了增材制造的最新进展所带来的影响,该进展现在允许创建真正的任意3D结构,最小尺寸约为100μm。
更新日期:2017-09-04
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