Microscale 3D Printing of Nanotwinned Copper

Ali Behroozfar, Soheil Daryadel, S. Reza Morsali, Salvador Moreno, Mahmoud Baniasadi, Rodrigo A. Bernal, Majid Minary-Jolandan

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

Nanotwinned (nt)-metals exhibit superior mechanical and electrical properties compared to their coarse-grained and nanograined counterparts. nt-metals in film and bulk forms are obtained using physical and chemical processes including pulsed electrodeposition (PED), plastic deformation, recrystallization, phase transformation, and sputter deposition. However, currently, there is no process for 3D printing (additive manufacturing) of nt-metals. Microscale 3D printing of nt-Cu is demonstrated with high density of coherent twin boundaries using a new room temperature process based on localized PED (L-PED). The 3D printed nt-Cu is fully dense, with low to none impurities, and low microstructural defects, and without obvious interface between printed layers, which overall result in good mechanical and electrical properties, without any postprocessing steps. The L-PED process enables direct 3D printing of layer-by-layer and complex 3D microscale nt-Cu structures, which may find applications for fabrication of metamaterials, sensors, plasmonics, and micro/nanoelectromechanical systems.

Original languageEnglish (US)
Article number1705107
JournalAdvanced Materials
Volume30
Issue number4
DOIs
StatePublished - Jan 25 2018
Externally publishedYes

Keywords

  • advanced manufacturing
  • microscale 3D printing
  • nanotwinned copper (nt-Cu)
  • pulsed electrodeposition (PED)
  • twin boundaries (TB)

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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