Fabrication and characteristics of highly ⟨110⟩ -oriented nanotwinned Au films

Wei-Lan Chiu; Chien-Min Liu; Han-wen Lin; John A. Wu; Y. C. Chou; K. N. Tu; Chih Chen

doi:10.1038/s41598-020-73133-w

Fabrication and characteristics of highly ⟨110⟩ -oriented nanotwinned Au films

Wei-Lan Chiu
, Chien-Min Liu
, Han-wen Lin
, John A. Wu
, Y. C. Chou
, K. N. Tu
, Chih Chen^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

2 Citations (Scopus)

32 Downloads (CityUHK Scholars)

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.

Original language	English
Article number	16566
Journal	Scientific Reports
Volume	10
Online published	6 Oct 2020
DOIs	https://doi.org/10.1038/s41598-020-73133-w
Publication status	Published - 2020
Externally published	Yes

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This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/

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title = "Fabrication and characteristics of highly ⟨110⟩ -oriented nanotwinned Au films",

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.",

author = "Wei-Lan Chiu and Chien-Min Liu and Han-wen Lin and Wu, \{John A.\} and Chou, \{Y. C.\} and Tu, \{K. N.\} and Chih Chen",

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doi = "10.1038/s41598-020-73133-w",

language = "English",

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journal = "Scientific Reports",

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T1 - Fabrication and characteristics of highly ⟨110⟩ -oriented nanotwinned Au films

AU - Chiu, Wei-Lan

AU - Liu, Chien-Min

AU - Lin, Han-wen

AU - Wu, John A.

AU - Chou, Y. C.

AU - Tu, K. N.

AU - Chen, Chih

PY - 2020

Y1 - 2020

N2 - 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.

AB - 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.

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U2 - 10.1038/s41598-020-73133-w

DO - 10.1038/s41598-020-73133-w

M3 - RGC 21 - Publication in refereed journal

C2 - 33024166

SN - 2045-2322

VL - 10

JO - Scientific Reports

JF - Scientific Reports

M1 - 16566

ER -

Fabrication and characteristics of highly ⟨110⟩ -oriented nanotwinned Au films

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