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Drawing suspended polymer micro-/nanofibers using glass micropipettes
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View: Figures


Image of FIG. 1.
FIG. 1.

(Color online) Schematic steps of the micropipette based suspended polymer fiber drawing method for a single fiber case: Step A: Raise the substrate until it comes into contact with the polymer droplet. Step B: Move the micropipette vertically with a constant speed and stop at a constant height. Step C: Move the stage along a predetermined trajectory with a constant speed while forming the solid polymer fiber by the evaporation of the solvent. Step D: Contact the substrate with the pipette to suspend the fiber. Step E: Break the fiber or continue to draw subsequent ones.

Image of FIG. 2.
FIG. 2.

SEM images of sample drawn suspended PS fibers: (a) continuously drawn array of fibers on a silicon substrate, (b) a nanofiber , (c) a cross pattern of two fibers showing the fiber diameter control in the same drawing process, and (d) 2D fiber network.

Image of FIG. 3.
FIG. 3.

(Color online) Effect of waiting time in step B in Fig. 1 on the PS fiber diameter.

Image of FIG. 4.
FIG. 4.

TEM and diffraction images of a PS nanofiber with approximately diameter .


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Drawing suspended polymer micro-/nanofibers using glass micropipettes