Fabrication and characteristics of highly ⟨ 110 ⟩ -oriented nanotwinned Au films
Journal
Scientific Reports
Journal Volume
10
Journal Issue
1
Date Issued
2020
Author(s)
Chiu W.-L.; Liu C.-M.; Lin H.-W.; Wu J.A.; Chou Y.-C.; Tu K.N.; Chen C.
Abstract
Fine grained and nanotwinned Au has many excellent properties and is widely used in electronic devices. We have fabricated ⟨ 110 ⟩ preferred-oriented Au thin films by DC plating at 5 mA/cm2. Microstructure analysis of the films show a unique fine grain structure with a twin formation. Hardness tests performed on electroplated ⟨ 110 ⟩ Au films show a hardness 47% greater than random and untwinned Au. We then achieved direct bonding between two Au ⟨ 110 ⟩ surfaces operating at 200 °C for an hour in a vacuum oven. The highly-oriented ⟨ 110 ⟩ nanotwinned Au films could be an ideal material in many gold products. © 2020, The Author(s).
Publisher
Nature Research
Type
journal article