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Versatile, kinetically controlled, high precision electrohydrodynamic writing of micro/nanofibers

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srep05949.pdf

abstract:

Direct writing of hierarchical micro/nanofibers have recently gained popularity in flexible/stretchable
electronics due to its low cost, simple process and high throughput. A kinetically controlled
mechanoelectrospinning (MES) is developed to directly write diversified hierarchical micro/nanofibers in a
continuous and programmable manner. Unlike conventional near-field electrospinning, our MES method
introduces a mechanical drawing force, to simultaneously enhance the positioning accuracy and
morphology controllability. The MES is predominantly controlled by the substrate speed, the
nozzle-to-substrate distance, and the applied voltage. As a demonstration, smooth straight, serpentine,
self-similar, and bead-on-string structures are direct-written on silicon/elastomer substrates with a
resolution of 200 nm. It is believed that MES can promote the low-cost, high precision fabrication of
flexible/stretchable electronics or enable the direct writing of the sacrificial structures for nanoscale
lithography.

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