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Issue 23, 2016
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A benchtop capillary flow layer-by-layer (CF-LbL) platform for rapid assembly and screening of biodegradable nanolayered films

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Abstract

Capillary flow layer-by-layer (CF-LbL) is a microfluidic platform for high throughput preparation and screening of nanolayered polymer films. Using a simple benchtop version of CF-LbL, we systematically studied the effects of various flow conditions and channel geometries on the thickness and surface roughness of the resulting films. We also investigated the biocompatibility and degradation behaviors of a series of enzymatically-degradable films made from naturally derived polymers, i.e. either alginate or hyaluronic acid as the anionic species and poly-L-arginine as the positive species. Furthermore, using one optimized film formulation for coating on the inside walls of a microfluidic chip, we successfully demonstrated the ability of this film to capture and rapidly release cancer cells from whole blood. This simple platform is expected to be a powerful tool to increase the accessibility of the LbL film assembly to a broader scientific community.

Graphical abstract: A benchtop capillary flow layer-by-layer (CF-LbL) platform for rapid assembly and screening of biodegradable nanolayered films

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Supplementary files

Article information


Submitted
24 Aug 2016
Accepted
10 Oct 2016
First published
10 Oct 2016

Lab Chip, 2016,16, 4601-4611
Article type
Paper

A benchtop capillary flow layer-by-layer (CF-LbL) platform for rapid assembly and screening of biodegradable nanolayered films

Z. Dong, L. Tang, C. C. Ahrens, Z. Ding, V. Cao, S. Castleberry, J. Yan and W. Li, Lab Chip, 2016, 16, 4601
DOI: 10.1039/C6LC01065B

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