Continuous fiberizing by laser melting (Cofiblas): Production of highly flexible glass nanofibers with effectively unlimited length

F Quintero; J Penide; A Riveiro; J Del Val; R Comesaña; F Lusquiños; J Pou

doi:10.1126/sciadv.aax7210

Continuous fiberizing by laser melting (Cofiblas): Production of highly flexible glass nanofibers with effectively unlimited length

Sci Adv. 2020 Feb 7;6(6):eaax7210. doi: 10.1126/sciadv.aax7210. eCollection 2020 Feb.

Authors

F Quintero¹, J Penide¹, A Riveiro¹, J Del Val¹, R Comesaña², F Lusquiños¹, J Pou¹

Affiliations

¹ Applied Physics Department, Universidade de Vigo, E.E.I., c/ Maxwell s/n, 36310 Vigo, Spain.
² Department of Materials Engineering, Applied Mechanics and Construction, Universidade de Vigo, E.E.I., c/ Maxwell s/n, 36310 Vigo, Spain.

Abstract

The development of nanofibers is expected to foster the creation of outstanding lightweight nanocomposites and flexible and transparent composites for applications such as optoelectronics. However, the reduced length of existing nanofibers and nanotubes limits mechanical strengthening and effective manufacturing. Here, we present an innovative method that produces glass nanofibers with lengths that are, effectively, unlimited by the process. The method uses a combination of a high-power laser with a supersonic gas jet. We describe the experimental setup and the physical processes involved, and, with the aid of a mathematical simulation, identify and discuss the key parameters which determine its distinctive features and feasibility. This method enabled the production of virtually unlimited long, solid, and nonporous glass nanofibers that display outstanding flexibility and could be separately arranged and weaved.

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