Au nanowire junction breakup through surface atom diffusion

Näytä kaikki kuvailutiedot



Pysyväisosoite

http://hdl.handle.net/10138/298156

Lähdeviite

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

Julkaisun nimi: Au nanowire junction breakup through surface atom diffusion
Tekijä: Vigonski, Simon; Jansson, Ville; Vlassov, Sergei; Polyakov, Boris; Baibuz, Ekaterina; Oras, Sven; Aabloo, Alvo; Djurabekova, Flyura; Zadin, Vahur
Muu tekijä: University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Department of Physics
Päiväys: 2018-01-05
Kieli: eng
Sivumäärä: 10
Kuuluu julkaisusarjaan: Nanotechnology
ISSN: 0957-4484
URI: http://hdl.handle.net/10138/298156
Tiivistelmä: 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.
Avainsanat: 114 Physical sciences
Tekijänoikeustiedot:


Tiedostot

Latausmäärä yhteensä: Ladataan...

Tiedosto(t) Koko Formaatti Näytä
1709.09104.pdf 868.4KB PDF Avaa tiedosto

Viite kuuluu kokoelmiin:

Näytä kaikki kuvailutiedot