Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 7, Issue 31, Pages 17471-17481Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b05075
Keywords
biomimetic microfibers; microfluidics; template synthesis; magnetic assembly; water collection
Funding
- National Natural Science Foundation of China [21136006, 21306117, 81321002]
- State Key Laboratory of Polymer Materials Engineering [sklpme2014-1-01]
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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.
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