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Microfluidic Dry-spinning and Characterization of Regenerated Silk Fibroin Fibers

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Shear-flow-induced graphene coating microfibers from microfluidic spinning.

Yunru Yu^1,2, Jiahui Guo³, Han Zhang³

¹Department of Clinical Laboratory, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, China.

Innovation (Cambridge (Mass.))

|February 24, 2022

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Researchers developed a new method to create graphene-coated microfibers for flexible electronics. This technique precisely controls fiber properties, enabling applications like thermal and motion sensors.

Area of Science:

Materials Science
Nanotechnology
Flexible Electronics

Background:

Advancements in flexible electronics necessitate innovative fiber-based systems.
Surface modification and encapsulation are key strategies for developing these systems.

Purpose of the Study:

To present a novel method for creating graphene nanosheet-coated microfibers.
To demonstrate precise control over microfiber morphology and properties.

Main Methods:

Integration of dip coating with microfluidic spinning to create shear-flow-induced graphene oxide (GO) nanosheet coatings on hydrogel microfibers.
Controllable parameters include fluid components, flow rates in microfluidic spinning, and lifting speed in dip coating.

Main Results:

Keywords:

flexible electronics graphene oxide hydrogel microfiber microfluidics

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Microfluidic Dry-spinning and Characterization of Regenerated Silk Fibroin Fibers

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Synthesis of Graphene Nanofluids with Controllable Flake Size Distributions

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Precisely tailored core-shell structures, conductivity, and thermal responsibilities of the microfibers.
Successful formation of thin graphene oxide (GO) nanosheet coating shells via shear flow during dip coating.

Conclusions:

The developed method offers a simple and controllable approach for fabricating versatile microfibers for flexible electronics.
Resultant microfibers show potential for thermal and motion sensing, including use as gesture indicators.