Au nanowire junction breakup through surface atom diffusion

Simon Vigonski, Ville Jansson, Sergei Vlassov, Boris Polyakov, Ekaterina Baibuz, Sven Oras, Alvo Aabloo, Flyura Djurabekova, Vahur Zadin

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Metallic nanowires are known to break into shorter fragments due to the Rayleigh instability mechanism. This process is strongly accelerated at elevated temperatures and can completely hinder the functioning of nanowire-based devices like e.g. transparent conductive and flexible coatings. At the same time, arranged gold nanodots have important applications in electrochemical sensors. In this paper we perform a series of annealing experiments of gold and silver nanowires and nanowire junctions at fixed temperatures 473, 673, 873 and 973 K (200 degrees C, 400 degrees C, 600 degrees C and 700 degrees C) during a time period of 10 min. We show that nanowires are especially prone to fragmentation around junctions and crossing points even at comparatively low temperatures. The fragmentation process is highly temperature dependent and the junction region breaks up at a lower temperature than a single nanowire. We develop a gold parametrization for kinetic Monte Carlo simulations and demonstrate the surface diffusion origin of the nanowire junction fragmentation. We show that nanowire fragmentation starts at the junctions with high reliability and propose that aligning nanowires in a regular grid could be used as a technique for fabricating arrays of nanodots.
Original languageEnglish
Article number015704
JournalNanotechnology
Volume29
Issue number1
Number of pages10
ISSN0957-4484
DOIs
Publication statusPublished - 5 Jan 2018
MoE publication typeA1 Journal article-refereed

Fields of Science

  • 114 Physical sciences

Cite this

Vigonski, S., Jansson, V., Vlassov, S., Polyakov, B., Baibuz, E., Oras, S., ... Zadin, V. (2018). Au nanowire junction breakup through surface atom diffusion. Nanotechnology, 29(1), [015704]. https://doi.org/10.1088/1361-6528/aa9a1b
Vigonski, Simon ; Jansson, Ville ; Vlassov, Sergei ; Polyakov, Boris ; Baibuz, Ekaterina ; Oras, Sven ; Aabloo, Alvo ; Djurabekova, Flyura ; Zadin, Vahur. / Au nanowire junction breakup through surface atom diffusion. In: Nanotechnology. 2018 ; Vol. 29, No. 1.
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abstract = "Metallic nanowires are known to break into shorter fragments due to the Rayleigh instability mechanism. This process is strongly accelerated at elevated temperatures and can completely hinder the functioning of nanowire-based devices like e.g. transparent conductive and flexible coatings. At the same time, arranged gold nanodots have important applications in electrochemical sensors. In this paper we perform a series of annealing experiments of gold and silver nanowires and nanowire junctions at fixed temperatures 473, 673, 873 and 973 K (200 degrees C, 400 degrees C, 600 degrees C and 700 degrees C) during a time period of 10 min. We show that nanowires are especially prone to fragmentation around junctions and crossing points even at comparatively low temperatures. The fragmentation process is highly temperature dependent and the junction region breaks up at a lower temperature than a single nanowire. We develop a gold parametrization for kinetic Monte Carlo simulations and demonstrate the surface diffusion origin of the nanowire junction fragmentation. We show that nanowire fragmentation starts at the junctions with high reliability and propose that aligning nanowires in a regular grid could be used as a technique for fabricating arrays of nanodots.",
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Vigonski, S, Jansson, V, Vlassov, S, Polyakov, B, Baibuz, E, Oras, S, Aabloo, A, Djurabekova, F & Zadin, V 2018, 'Au nanowire junction breakup through surface atom diffusion', Nanotechnology, vol. 29, no. 1, 015704. https://doi.org/10.1088/1361-6528/aa9a1b

Au nanowire junction breakup through surface atom diffusion. / Vigonski, Simon; Jansson, Ville ; Vlassov, Sergei; Polyakov, Boris; Baibuz, Ekaterina; Oras, Sven; Aabloo, Alvo; Djurabekova, Flyura; Zadin, Vahur.

In: Nanotechnology, Vol. 29, No. 1, 015704, 05.01.2018.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Au nanowire junction breakup through surface atom diffusion

AU - Vigonski, Simon

AU - Jansson, Ville

AU - Vlassov, Sergei

AU - Polyakov, Boris

AU - Baibuz, Ekaterina

AU - Oras, Sven

AU - Aabloo, Alvo

AU - Djurabekova, Flyura

AU - Zadin, Vahur

PY - 2018/1/5

Y1 - 2018/1/5

N2 - Metallic nanowires are known to break into shorter fragments due to the Rayleigh instability mechanism. This process is strongly accelerated at elevated temperatures and can completely hinder the functioning of nanowire-based devices like e.g. transparent conductive and flexible coatings. At the same time, arranged gold nanodots have important applications in electrochemical sensors. In this paper we perform a series of annealing experiments of gold and silver nanowires and nanowire junctions at fixed temperatures 473, 673, 873 and 973 K (200 degrees C, 400 degrees C, 600 degrees C and 700 degrees C) during a time period of 10 min. We show that nanowires are especially prone to fragmentation around junctions and crossing points even at comparatively low temperatures. The fragmentation process is highly temperature dependent and the junction region breaks up at a lower temperature than a single nanowire. We develop a gold parametrization for kinetic Monte Carlo simulations and demonstrate the surface diffusion origin of the nanowire junction fragmentation. We show that nanowire fragmentation starts at the junctions with high reliability and propose that aligning nanowires in a regular grid could be used as a technique for fabricating arrays of nanodots.

AB - Metallic nanowires are known to break into shorter fragments due to the Rayleigh instability mechanism. This process is strongly accelerated at elevated temperatures and can completely hinder the functioning of nanowire-based devices like e.g. transparent conductive and flexible coatings. At the same time, arranged gold nanodots have important applications in electrochemical sensors. In this paper we perform a series of annealing experiments of gold and silver nanowires and nanowire junctions at fixed temperatures 473, 673, 873 and 973 K (200 degrees C, 400 degrees C, 600 degrees C and 700 degrees C) during a time period of 10 min. We show that nanowires are especially prone to fragmentation around junctions and crossing points even at comparatively low temperatures. The fragmentation process is highly temperature dependent and the junction region breaks up at a lower temperature than a single nanowire. We develop a gold parametrization for kinetic Monte Carlo simulations and demonstrate the surface diffusion origin of the nanowire junction fragmentation. We show that nanowire fragmentation starts at the junctions with high reliability and propose that aligning nanowires in a regular grid could be used as a technique for fabricating arrays of nanodots.

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Vigonski S, Jansson V, Vlassov S, Polyakov B, Baibuz E, Oras S et al. Au nanowire junction breakup through surface atom diffusion. Nanotechnology. 2018 Jan 5;29(1). 015704. https://doi.org/10.1088/1361-6528/aa9a1b