Rapid and mass growth of stress-induced nanowhiskers on the surfaces of evaporated polycrystalline Cu films

Masumi Saka; Fumihiko Yamaya; Hironori Tohmyoh

doi:10.1016/j.scriptamat.2007.02.036

Rapid and mass growth of stress-induced nanowhiskers on the surfaces of evaporated polycrystalline Cu films

Masumi Saka, Fumihiko Yamaya, Hironori Tohmyoh

ENG - Finemechanics

Research output: Contribution to journal › Article › peer-review

70 Citations (Scopus)

Abstract

The rapid and mass growth of Cu nanowhiskers on polycrystalline films has been realized. The diameter and length of the nanowhiskers are governed by temperature, film thickness, grain size and time. Here we report a mechanism for the growth of the nanowhiskers. Cu atoms diffuse due to local stress gradients in the grains which originate in the material and geometrical singularities caused by anisotropy. Weak spots in the oxide layers on the films act as initiation sites for the nanowhiskers.

Original language	English
Pages (from-to)	1031-1034
Number of pages	4
Journal	Scripta Materialia
Volume	56
Issue number	12
DOIs	https://doi.org/10.1016/j.scriptamat.2007.02.036
Publication status	Published - 2007 Jun

Keywords

Copper
Nanostructure
Stress-induced migration
Thin films
Whiskers

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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10.1016/j.scriptamat.2007.02.036

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title = "Rapid and mass growth of stress-induced nanowhiskers on the surfaces of evaporated polycrystalline Cu films",

abstract = "The rapid and mass growth of Cu nanowhiskers on polycrystalline films has been realized. The diameter and length of the nanowhiskers are governed by temperature, film thickness, grain size and time. Here we report a mechanism for the growth of the nanowhiskers. Cu atoms diffuse due to local stress gradients in the grains which originate in the material and geometrical singularities caused by anisotropy. Weak spots in the oxide layers on the films act as initiation sites for the nanowhiskers.",

keywords = "Copper, Nanostructure, Stress-induced migration, Thin films, Whiskers",

author = "Masumi Saka and Fumihiko Yamaya and Hironori Tohmyoh",

year = "2007",

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language = "English",

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pages = "1031--1034",

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TY - JOUR

T1 - Rapid and mass growth of stress-induced nanowhiskers on the surfaces of evaporated polycrystalline Cu films

AU - Saka, Masumi

AU - Yamaya, Fumihiko

AU - Tohmyoh, Hironori

PY - 2007/6

Y1 - 2007/6

N2 - The rapid and mass growth of Cu nanowhiskers on polycrystalline films has been realized. The diameter and length of the nanowhiskers are governed by temperature, film thickness, grain size and time. Here we report a mechanism for the growth of the nanowhiskers. Cu atoms diffuse due to local stress gradients in the grains which originate in the material and geometrical singularities caused by anisotropy. Weak spots in the oxide layers on the films act as initiation sites for the nanowhiskers.

AB - The rapid and mass growth of Cu nanowhiskers on polycrystalline films has been realized. The diameter and length of the nanowhiskers are governed by temperature, film thickness, grain size and time. Here we report a mechanism for the growth of the nanowhiskers. Cu atoms diffuse due to local stress gradients in the grains which originate in the material and geometrical singularities caused by anisotropy. Weak spots in the oxide layers on the films act as initiation sites for the nanowhiskers.

KW - Copper

KW - Nanostructure

KW - Stress-induced migration

KW - Thin films

KW - Whiskers

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DO - 10.1016/j.scriptamat.2007.02.036

M3 - Article

AN - SCOPUS:34247104027

SN - 1359-6462

VL - 56

SP - 1031

EP - 1034

JO - Scripta Materialia

JF - Scripta Materialia

IS - 12

ER -

Rapid and mass growth of stress-induced nanowhiskers on the surfaces of evaporated polycrystalline Cu films

Abstract

Keywords

ASJC Scopus subject areas

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