Structure and field-emission properties of sub-micrometer-sized Tungsten-whisker arrays fabricated by vapor deposition

Shiliang Wang; Yuehui He; Xiaosheng Fang; Jin Zou; Yong Wang; Han Huang; Pedro M.F.J. Costa; Min Song; Baiyun Huang; Chain T. Liu; Peter K. Liaw; Yoshio Bando; Dmitri Colberg

doi:10.1002/adma.200803401

Structure and field-emission properties of sub-micrometer-sized Tungsten-whisker arrays fabricated by vapor deposition

Shiliang Wang^*, Yuehui He, Xiaosheng Fang, Jin Zou, Yong Wang, Han Huang, Pedro M.F.J. Costa, Min Song, Baiyun Huang, Chain T. Liu, Peter K. Liaw, Yoshio Bando, Dmitri Colberg

^*Corresponding author for this work

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

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Abstract

A study was conducted to investigate the structure and field-emission properties of sub-micrometer-sized tungsten-whisker arrays fabricated by vapor deposition. Scanning electron microscopy (SEM) images revealed that the synthesized whiskers had an average diameter of 180 nm and a length of up to 20 μm. Energy-dispersive spectroscopy (EDS) analyses of the whiskers revealed that they consisted of pure elemental tungsten. Transmission electron microscopy (TEM) was also employed to understand the detailed structural characteristics of the whiskers. TEM images confirmed that they had faceted tips and uniform lateral dimensions along the axial direction. High-resolution TEM (HRTEM) and corresponding selected-area diffraction (SAED) analyses also revealed that the tungsten whiskers were single crystalline with a bcc structure and grew along the (111) directions.

Original language	English (US)
Pages (from-to)	2387-2392
Number of pages	6
Journal	Advanced Materials
Volume	21
Issue number	23
DOIs	https://doi.org/10.1002/adma.200803401
State	Published - Jun 19 2009
Externally published	Yes

ASJC Scopus subject areas

General Materials Science
Mechanics of Materials
Mechanical Engineering

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@article{780d161ac2b14908a64d6f0074a159f2,

title = "Structure and field-emission properties of sub-micrometer-sized Tungsten-whisker arrays fabricated by vapor deposition",

abstract = "A study was conducted to investigate the structure and field-emission properties of sub-micrometer-sized tungsten-whisker arrays fabricated by vapor deposition. Scanning electron microscopy (SEM) images revealed that the synthesized whiskers had an average diameter of 180 nm and a length of up to 20 μm. Energy-dispersive spectroscopy (EDS) analyses of the whiskers revealed that they consisted of pure elemental tungsten. Transmission electron microscopy (TEM) was also employed to understand the detailed structural characteristics of the whiskers. TEM images confirmed that they had faceted tips and uniform lateral dimensions along the axial direction. High-resolution TEM (HRTEM) and corresponding selected-area diffraction (SAED) analyses also revealed that the tungsten whiskers were single crystalline with a bcc structure and grew along the (111) directions.",

author = "Shiliang Wang and Yuehui He and Xiaosheng Fang and Jin Zou and Yong Wang and Han Huang and Costa, {Pedro M.F.J.} and Min Song and Baiyun Huang and Liu, {Chain T.} and Liaw, {Peter K.} and Yoshio Bando and Dmitri Colberg",

year = "2009",

month = jun,

day = "19",

doi = "10.1002/adma.200803401",

language = "English (US)",

volume = "21",

pages = "2387--2392",

journal = "Advanced Materials",

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TY - JOUR

T1 - Structure and field-emission properties of sub-micrometer-sized Tungsten-whisker arrays fabricated by vapor deposition

AU - Wang, Shiliang

AU - He, Yuehui

AU - Fang, Xiaosheng

AU - Zou, Jin

AU - Wang, Yong

AU - Huang, Han

AU - Costa, Pedro M.F.J.

AU - Song, Min

AU - Huang, Baiyun

AU - Liu, Chain T.

AU - Liaw, Peter K.

AU - Bando, Yoshio

AU - Colberg, Dmitri

PY - 2009/6/19

Y1 - 2009/6/19

N2 - A study was conducted to investigate the structure and field-emission properties of sub-micrometer-sized tungsten-whisker arrays fabricated by vapor deposition. Scanning electron microscopy (SEM) images revealed that the synthesized whiskers had an average diameter of 180 nm and a length of up to 20 μm. Energy-dispersive spectroscopy (EDS) analyses of the whiskers revealed that they consisted of pure elemental tungsten. Transmission electron microscopy (TEM) was also employed to understand the detailed structural characteristics of the whiskers. TEM images confirmed that they had faceted tips and uniform lateral dimensions along the axial direction. High-resolution TEM (HRTEM) and corresponding selected-area diffraction (SAED) analyses also revealed that the tungsten whiskers were single crystalline with a bcc structure and grew along the (111) directions.

AB - A study was conducted to investigate the structure and field-emission properties of sub-micrometer-sized tungsten-whisker arrays fabricated by vapor deposition. Scanning electron microscopy (SEM) images revealed that the synthesized whiskers had an average diameter of 180 nm and a length of up to 20 μm. Energy-dispersive spectroscopy (EDS) analyses of the whiskers revealed that they consisted of pure elemental tungsten. Transmission electron microscopy (TEM) was also employed to understand the detailed structural characteristics of the whiskers. TEM images confirmed that they had faceted tips and uniform lateral dimensions along the axial direction. High-resolution TEM (HRTEM) and corresponding selected-area diffraction (SAED) analyses also revealed that the tungsten whiskers were single crystalline with a bcc structure and grew along the (111) directions.

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DO - 10.1002/adma.200803401

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SP - 2387

EP - 2392

JO - Advanced Materials

JF - Advanced Materials

IS - 23

ER -

Structure and field-emission properties of sub-micrometer-sized Tungsten-whisker arrays fabricated by vapor deposition

Abstract

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