Drawing suspended polymer micro-/nanofibers using glass micropipettes

Nain, Amrinder S.; Wong, J.; Amón, Cristina H.; Sitti, Metin

doi:10.1063/1.2372694

Cited by 145 publications

(78 citation statements)

References 14 publications

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“…There are several techniques for production of nanofibers such as drawing, template synthesis, phase separation, self-assembly and electrospinning [1,4]. Amongst this techniques electrospinning is versatile for production of continuous fibers from micro scale to nanometer range [5] by the application of electrostatic forces to a jetting polymer solution [6,7]. Mechanical reinforcement of fibers by the incorporation of nanofillers has been shown as a method for enhancement of the fibers' properties for a number of particular applications.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of poly(vinyl alcohol)/graphene nanofibers synthesized by electrospinning

Barzegar

Bello

Fabiane

et al. 2015

Journal of Physics and Chemistry of Solids

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We report on the synthesis and characterization of electrospun polyvinyl alcohol (PVA)/graphene nanofibers. The samples produced were characterized by Raman spectroscopy for structural and defect density analysis, scanning electron microscopy (SEM) for morphological analysis, and thermogravimetric (TGA) for thermal analysis.SEM measurements show uniform hollow PVA fibers formation and excellent graphene dispersion within the fibers, while TGA measurements show the improved thermal stability of PVA in the presence of graphene. The synthesized polymer reinforced nanofibers have potential to serve in many different applications such as thermal management, supercapacitor electrodes and biomedical materials for drug delivery.

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Section: Introductionmentioning

confidence: 99%

Preparation and characterization of poly(vinyl alcohol)/graphene nanofibers synthesized by electrospinning

Barzegar

Bello

Fabiane

et al. 2015

Journal of Physics and Chemistry of Solids

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“…It exploits rapid solidification of the capillary bridge to eliminate the need for de-molding. To date, it has been applied to polystyrene 11 , PMMA 12 , PTT 13 , nylon 14 , sucrose 15 , polyurethane 16 , SU-8 (ref. 17) and adhesives 18 .…”

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confidence: 99%

Microsphere-assisted fabrication of high aspect-ratio elastomeric micropillars and waveguides

Paek

Kim

2014

Nat Commun

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High aspect-ratio micropillars are in strong demand for microtechnology, but their realization remains a difficult challenge, especially when attempted with soft materials. Here we present a direct drawing-based technique for fabricating micropillars with poly(dimethylsiloxane). Despite the material's extreme softness, our technique enables routine realization of micropillars exceeding 2,000 mm in height and 100 in aspect-ratio. It also supports in situ integration of microspheres at the tips of the micropillars. As a validation of the new structure's utility, we configure it into airflow sensors, in which the micropillars and microspheres function as flexible upright waveguides and self-aligned reflectors, respectively. Highlevel bending of the micropillar under an airflow and its optical read-out enables mm s À 1 scale-sensing resolution. This new scheme, which uniquely integrates high aspect-ratio elastomeric micropillars and microspheres self-aligned to them, could widen the scope of soft material-based microdevice technology.

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“…[ 12 ] This method, however, was not scaled up and thus did not fi nd practical applications. [ 13 ] Here, we introduce a scalable method of nanofi ber spinning named touch-spinning. A glass rod (0.3 mm to a few mm in diameter) is glued to a rotating stage, whose diameter can be chosen over a wide range of a few centimeters to more than one meter ( Figure 1 a).…”

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confidence: 99%