Fiber drawing technique

A battery spool has been produced by fiber drawing technique [11], where copper and aluminum wires (electrodes) were inserted in fiber preform made from polyethylene that is shaped inside to contain electrolyte and the electrodes. These were assembled in continuous process and heat set, like in the fiber drawing process to form the battery. 

Fiber drawing technique has also been used to produce soft liber supercapacitors [21]. They are prepared by first rolling and stacking conductive and dielectric films into a multilayer preform structure. The preform is then heated to a temperatore close to the glass transition temperature, and finally drawn by a fiber tower at temperatures above glass transition. 

Hybrid polymer-metal fibers fabricated by fiber-drawing techniques... 

In general, metals can be worked extensively, either at room temperature or at high temperatures. This is so mainly because of the availability of a large of number slip systems for plastic deformation. This allows us to use metal drawing techniques to obtain filamentary metals. Metallic fibers are, generally, not spun from a molten state, although this can be done in some cases (see Section 5.2). When metals are cold worked (i.e. below the recrystallization temperature), they... 

For evaluation of DUEVs, with less shear viscosity contribution to the total response, the modified stagnation technique is the procedure of preference. For practical applications the vacuum-suction filament-draw technique is probably the more valuable because the deformation rates in many applications are not solely extensional in nature. The comments regarding the velocity gradients in the tubeless siphon (41) are appropriate to the fiber-suction approach flow in a tubeless siphon approximates extensional flow in a sense that the largest components of the velocity gradient tensors are diagonal ones. ... 

This is used when polymers are readily melted without degradation and the molten polymer is forced through a spiimeret comprising 50 to 1000 fine holes. On emerging from the holes, the threads sohdify, often in an amorphous glassy state, and are wound into a yam. Orientation and crystallinity are important requirements in fibers, and the yam is subjected to a drawing procedure that orients the chains and strengthens the fiber. This technique is applied to polyesters, polyamides, and polyolefins. 

Apart from the above-mentioned fiber formation techniques, biomaterial fibers may be produced by other techniques. Among these, biospinning plays an important role. Biospinning is defined as the process of direct fiber drawing from the spinning glands of various insects such as silkworms and spiders [37]. Biospun fibers, eg, from Bombyx mori silkworms, have been traditionally used as suture material [38]. 

While there are many reports on sol-gel-derived oxide glass fibers, few works have been done on fluoride glass fibers. Fiber drawing of multi-component precursor oxide gels and their fluorination appear to be much less viable. Heavy-metal fluoride glass fibers are usually produced by the preform drawing technique. 

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