Microfluidic Fabrication of Bio-Inspired Microfibers with Controllable Magnetic Spindle-Knots for 3D Assembly and Water Collection
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- 作者：Xiao-Heng He ; Wei Wang ; Ying-Mei Liu ; Ming-Yue Jiang ; Fang Wu ; Ke Deng ; Zhuang Liu ; Xiao-Jie Ju ; Rui Xie ; Liang-Yin Chu
- 刊名：ACS Applied Materials & Interfaces
- 出版年：2015
- 出版时间：August 12, 2015
- 年：2015
- 卷：7
- 期：31
- 页码：17471-17481
- 全文大小：718K
- ISSN：1944-8252
文摘
A simple and flexible approach is developed for controllable fabrication of spider-silk-like microfibers with tunable magnetic spindle-knots from biocompatible calcium alginate for controlled 3D assembly and water collection. Liquid jet templates with volatile oil drops containing magnetic Fe3O4 nanoparticles are generated from microfluidics for fabricating spider-silk-like microfibers. The structure of jet templates can be precisely adjusted by simply changing the flow rates to tailor the structures of the resultant spider-silk-like microfibers. The microfibers can be well manipulated by external magnetic fields for controllably moving, and patterning and assembling into different 2D and 3D structures. Moreover, the dehydrated spider-silk-like microfibers, with magnetic spindle-knots for collecting water drops, can be controllably assembled into spider-web-like structures for excellent water collection. These spider-silk-like microfibers are promising as functional building blocks for engineering complex 3D scaffolds for water collection, cell culture, and tissue engineering.