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Polymers 2017, 9(9), 434;

Helix Electrohydrodynamic Printing of Highly Aligned Serpentine Micro/Nanofibers

State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
Flexible Electronics Research Center, Huazhong University of Science and Technology, Wuhan 430074, China
Authors to whom correspondence should be addressed.
Received: 17 August 2017 / Revised: 5 September 2017 / Accepted: 6 September 2017 / Published: 8 September 2017
(This article belongs to the Special Issue Electrospinning of Nanofibres)
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Micro/nano serpentine structures have widespread applications in flexible/stretchable electronics; however, challenges still exist for low-cost, high-efficiency and controllable manufacturing. Helix electrohydrodynamic printing (HE-printing) has been proposed here to realize controllable direct-writing of large area, highly aligned serpentine micro/nanofibers by introducing the rope coiling effect into printing process. By manipulating the flying trajectory and solidification degree of the micro/nano jet, the solidified micro/nanofiber flying in a stabilized helical manner and versatile serpentine structures deposited on a moving collector have been achieved. Systematic experiments and theoretical analysis were conducted to study the transformation behavior and the size changing rules for various deposited microstructures, and highly aligned serpentine microfibers were directly written by controlling the applied voltage, nozzle-to-collector distance and collector velocity. Furthermore, a hyper-stretchable piezoelectric device that can detect stretching, bending and pressure has been successfully fabricated using the printed serpentine micro/nanofibers, demonstrating the potential of HE-printing in stretchable electronics manufacturing. View Full-Text
Keywords: serpentine micro/nanofiber; electrospinning; stretchable electronics serpentine micro/nanofiber; electrospinning; stretchable electronics

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Duan, Y.; Ding, Y.; Xu, Z.; Huang, Y.; Yin, Z. Helix Electrohydrodynamic Printing of Highly Aligned Serpentine Micro/Nanofibers. Polymers 2017, 9, 434.

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