Nanoscale structural engineering via phase segregation: Au-Ge system

Yu Lun Chueh; Cosima N. Boswell; Chun Wei Yuan; Swanee J. Shin; Kuniharu Takei; Johnny C. Ho; Hyunhyub Ko; Zhiyong Fan; E. E. Haller; D. C. Chrzan; Ali Javey

doi:10.1021/nl902597m

Nanoscale structural engineering via phase segregation: Au-Ge system

Yu Lun Chueh, Cosima N. Boswell, Chun Wei Yuan, Swanee J. Shin, Kuniharu Takei, Johnny C. Ho, Hyunhyub Ko, Zhiyong Fan, E. E. Haller, D. C. Chrzan, Ali Javey^*

^*Corresponding author for this work

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

24 Citations (Scopus)

Abstract

A tunable structural engineering of nanowires based on template-assisted alloying and phase segregation processes is demonstrated. The Au-Ge system, which has a low eutectic temperature and negligible solid solubility (< 10^-3 atom %) of Au in Ge at low temperatures, is utilized. Depending on the Au concentration of the initial nanowires. final structures ranging from nearly periodic nanodlsk patterns to core/shell and fully alloyed nanowires are produced. The formation mechanisms are discussed in detail and characterized by in situ transmission electron microscopy and energy-dispersive spectrometry analyses. Electrical measurements illustrate the metallic and semiconducting characteristics of the fully alloyed and alternating Au/Ge nanodisk structures, respectively.

Original language	English
Pages (from-to)	393-397
Number of pages	5
Journal	Nano Letters
Volume	10
Issue number	2
DOIs	https://doi.org/10.1021/nl902597m
Publication status	Published - 10 Feb 2010
Externally published	Yes

Keywords

Nanoscale diffusion
Nanowires
Phase segregation
Supercooling

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10.1021/nl902597m

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title = "Nanoscale structural engineering via phase segregation: Au-Ge system",

abstract = "A tunable structural engineering of nanowires based on template-assisted alloying and phase segregation processes is demonstrated. The Au-Ge system, which has a low eutectic temperature and negligible solid solubility (< 10-3 atom \%) of Au in Ge at low temperatures, is utilized. Depending on the Au concentration of the initial nanowires. final structures ranging from nearly periodic nanodlsk patterns to core/shell and fully alloyed nanowires are produced. The formation mechanisms are discussed in detail and characterized by in situ transmission electron microscopy and energy-dispersive spectrometry analyses. Electrical measurements illustrate the metallic and semiconducting characteristics of the fully alloyed and alternating Au/Ge nanodisk structures, respectively.",

keywords = "Nanoscale diffusion, Nanowires, Phase segregation, Supercooling",

author = "Chueh, \{Yu Lun\} and Boswell, \{Cosima N.\} and Yuan, \{Chun Wei\} and Shin, \{Swanee J.\} and Kuniharu Takei and Ho, \{Johnny C.\} and Hyunhyub Ko and Zhiyong Fan and Haller, \{E. E.\} and Chrzan, \{D. C.\} and Ali Javey",

year = "2010",

month = feb,

day = "10",

doi = "10.1021/nl902597m",

language = "English",

volume = "10",

pages = "393--397",

journal = "Nano Letters",

issn = "1530-6984",

publisher = "American Chemical Society",

number = "2",

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TY - JOUR

T1 - Nanoscale structural engineering via phase segregation

T2 - Au-Ge system

AU - Chueh, Yu Lun

AU - Boswell, Cosima N.

AU - Yuan, Chun Wei

AU - Shin, Swanee J.

AU - Takei, Kuniharu

AU - Ho, Johnny C.

AU - Ko, Hyunhyub

AU - Fan, Zhiyong

AU - Haller, E. E.

AU - Chrzan, D. C.

AU - Javey, Ali

PY - 2010/2/10

Y1 - 2010/2/10

N2 - A tunable structural engineering of nanowires based on template-assisted alloying and phase segregation processes is demonstrated. The Au-Ge system, which has a low eutectic temperature and negligible solid solubility (< 10-3 atom %) of Au in Ge at low temperatures, is utilized. Depending on the Au concentration of the initial nanowires. final structures ranging from nearly periodic nanodlsk patterns to core/shell and fully alloyed nanowires are produced. The formation mechanisms are discussed in detail and characterized by in situ transmission electron microscopy and energy-dispersive spectrometry analyses. Electrical measurements illustrate the metallic and semiconducting characteristics of the fully alloyed and alternating Au/Ge nanodisk structures, respectively.

AB - A tunable structural engineering of nanowires based on template-assisted alloying and phase segregation processes is demonstrated. The Au-Ge system, which has a low eutectic temperature and negligible solid solubility (< 10-3 atom %) of Au in Ge at low temperatures, is utilized. Depending on the Au concentration of the initial nanowires. final structures ranging from nearly periodic nanodlsk patterns to core/shell and fully alloyed nanowires are produced. The formation mechanisms are discussed in detail and characterized by in situ transmission electron microscopy and energy-dispersive spectrometry analyses. Electrical measurements illustrate the metallic and semiconducting characteristics of the fully alloyed and alternating Au/Ge nanodisk structures, respectively.

KW - Nanoscale diffusion

KW - Nanowires

KW - Phase segregation

KW - Supercooling

UR - https://www.webofscience.com/wos/woscc/full-record/WOS:000274338800006

UR - https://openalex.org/W2044340850

UR - https://www.scopus.com/pages/publications/76749134389

U2 - 10.1021/nl902597m

DO - 10.1021/nl902597m

M3 - Journal Article

SN - 1530-6984

VL - 10

SP - 393

EP - 397

JO - Nano Letters

JF - Nano Letters

IS - 2

ER -

Nanoscale structural engineering via phase segregation: Au-Ge system

Abstract

Keywords

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