3D printed water-soluble scaffolds for rapid production of PDMS micro-fluidic flow chambers.

3D printed water-soluble scaffolds for rapid production of PDMS micro-fluidic flow chambers.
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DOI:
10.1038/s41598-018-21638-w
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发表时间:
2018-02-20
期刊:
影响因子:
4.6
通讯作者:
Andersson M
Andersson M
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Dahlberg T;Stangner T;Zhang H;Wiklund K;Lundberg P;Edman L;Andersson M

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我们报道了一种用3D打印水溶性聚乙烯醇(PVA)长丝作为主支架,在聚二甲基硅氧烷(PDMS)中制造三维(3D)生物相容性微流体流动室的新方法。支架首先嵌入PDMS中,然后无残留物溶解在水中,在硬化的PDMS中留下支架的铭文。我们使用普通的廉价3D打印机证明了我们方法的强度,并使用图像分析和数字全息显微镜评估了刻字过程和通道的微流体特性。此外,我们提供了一种允许在盖上直接打印的协议,并且我们表明可以在60分钟内实现通道截面小至40 μm × 300 μm的流室。这些流动通道完全透明,具有生物相容性,无需进一步处理即可用于微观应用。我们提出的方案有助于简单,快速和适应性强的微流体通道设计生产,具有成本效益,不需要专门培训,可用于各种细胞和细菌分析。为了帮助读者重现我们的微流体装置,我们提供:完整的准备协议,通道支架和我们定制的成型装置的3D打印CAD文件,3D打印机构建板水平说明和g代码。
We report a novel method for fabrication of three-dimensional (3D) biocompatible micro-fluidic flow chambers in polydimethylsiloxane (PDMS) by 3D-printing water-soluble polyvinyl alcohol (PVA) filaments as master scaffolds. The scaffolds are first embedded in the PDMS and later residue-free dissolved in water leaving an inscription of the scaffolds in the hardened PDMS. We demonstrate the strength of our method using a regular, cheap 3D printer, and evaluate the inscription process and the channels micro-fluidic properties using image analysis and digital holographic microscopy. Furthermore, we provide a protocol that allows for direct printing on coverslips and we show that flow chambers with a channel cross section down to 40 μm × 300 μm can be realized within 60 min. These flow channels are perfectly transparent, biocompatible and can be used for microscopic applications without further treatment. Our proposed protocols facilitate an easy, fast and adaptable production of micro-fluidic channel designs that are cost-effective, do not require specialized training and can be used for a variety of cell and bacterial assays. To help readers reproduce our micro-fluidic devices, we provide: full preparation protocols, 3D-printing CAD files for channel scaffolds and our custom-made molding device, 3D printer build-plate leveling instructions, and G-code.
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3D打印的微流体。
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发表时间: 2016-03-14
期刊: Angewandte Chemie (International ed. in English)
影响因子: --
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影响因子: 1.9
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