Bulk Nanostructured Metal from Multiply-Twinned Nanowires

Prestowitz L. C. O., COŞKUN Ş., Hu X., Dunand D. C., Huang J.

Nano Letters, cilt.21, ss.5627-5632, 2021 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 21
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1021/acs.nanolett.1c01184
  • Dergi Adı: Nano Letters
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Biotechnology Research Abstracts, Chemical Abstracts Core, Chimica, Compendex, EMBASE, INSPEC, MEDLINE
  • Sayfa Sayıları: ss.5627-5632
  • Anahtar Kelimeler: bulk nanostructured metals, nanotwinning, silver nanowires, electroless plating, hardness, SILVER NANOWIRES, PLASTICITY, SHAPE
  • Eskişehir Osmangazi Üniversitesi Adresli: Evet

Özet

© 2021 American Chemical Society.Using chemically synthesized silver nanowires with 5-fold twinning planes as a model system, a bottom-up process to generate a bulk nanostructured metal has been demonstrated. Although the nanowires would be shortened and deformed during densification, they are chosen as a model system because they are currently the most scalable and convenient way to obtain Ag particles with high twinning densities. Direct cold pressing of a silver nanowire filter cake did not generate a sufficiently cohesive sample, while hot pressing at 190 °C for 8 h resulted in extensive sintering, eliminating the nanowire morphology. Copper was then electroplated on the silver nanowires as a binder and filler to increase the densification upon hot pressing; despite nonuniform plating across the thickness of the filter cake, the thermal stability of the nanowires was increased, allowing hot pressing at 390 °C. Finally, a uniform copper coating on silver nanowires was achieved by electroless plating, leading to cohesive bulk metal after hot pressing.