Shear induced simultaneous consolidation and alignment of silicon nanowires into ingots using equal channel angular extrusion (ECAE) Academic Article uri icon

abstract

  • © 2015 IOP Publishing Ltd. Shear induced simultaneous consolidation and assembly of nanowires accomplished using equal channel angular extrusion (ECAE) is studied and reported. The intent is to use processing of large quantities of nanowires directly in their original solid state to not only consolidate them, but also to align them, without destroying or altering their morphologies in the process. The results indicate that ECAE is useful to consolidate nanowire powders into mechanically robust pellets at room temperature, without the need for any elevated temperature processing. The preliminary results also indicate that in certain regions of the consolidated nanowire pellets, alignment of the nanowires is also possible. The interlocking of the rough surfaces of the silicon nanowires during ECAE is believed to be responsible for the mechanical robustness of the nanowire pellets. It is believed that such simultaneous consolidation and alignment of nanowires allows for using the anisotropic properties of nanowires in energy conversion device fabrication.

author list (cited authors)

  • Vasiraju, V., Brockway, L., Balachandran, S., Srinivasa, A., & Vaddiraju, S.

citation count

  • 2

publication date

  • January 2015