Journal
SMALL
Volume 14, Issue 21, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.201703521
Keywords
electro-hydrodynamic direct-writing; electrospun nanofibers; flexible/stretchable electronics; micro/nanomanufacturing; solution-based processes
Categories
Funding
- National Natural Science Foundation of China [51705179, 51635007]
- China Postdoctoral Science Foundation [2017M610469]
- National Key Research and Development Program of China [2016YFB0401105]
- Fundamental Research Funds for the Central Universities [2016YXZD068]
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Nanofibers/nanowires usually exhibit exceptionally low flexural rigidities and remarkable tolerance against mechanical bending, showing superior advantages in flexible electronics applications. Electrospinning is regarded as a powerful process for this 1D nanostructure; however, it can only be able to produce chaotic fibers that are incompatible with the well-patterned microstructures in flexible electronics. Electro-hydrodynamic (EHD) direct-writing technology enables large-scale deposition of highly aligned nanofibers in an additive, noncontact, real-time adjustment, and individual control manner on rigid or flexible, planar or curved substrates, making it rather attractive in the fabrication of flexible electronics. In this Review, the ground-breaking research progress in the field of EHD direct-writing technology is summarized, including a brief chronology of EHD direct-writing techniques, basic principles and alignment strategies, and applications in flexible electronics. Finally, future prospects are suggested to advance flexible electronics based on orderly arranged EHD direct-written fibers. This technology overcomes the limitations of the resolution of fabrication and viscosity of ink of conventional inkjet printing, and represents major advances in manufacturing of flexible electronics.
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