Ionic-electronic conductor nanostructures: Template-confined growth and nonlinear electrical transport

Changhao Liang; Kazuya Terabe; Tsuyoshi Hasegawa; Ryota Negishi; Takuro Tamura; Masakazu Aono

doi:10.1002/smll.200500155

Ionic-electronic conductor nanostructures: Template-confined growth and nonlinear electrical transport

Changhao Liang, Kazuya Terabe, Tsuyoshi Hasegawa, Ryota Negishi, Takuro Tamura, Masakazu Aono

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

52 Citations (Scopus)

Abstract

A new template-assisted step-electrochemical method for fabricating metal-chalcogenide-based mixed conductors, is discussed. This method is applicable to forming Ag/Ag₂S heteronanowire arrays (HNAs) that are advantageous for assembling nanoswitching devices. An ordered Ag/Ag₂S HNA can be grown inside the pores of an anodic aluminum oxide (AAO) membrane with step-electrochemical reactions. It was observed that the growth of Ag ₂S nanowires is dependent on an electrochemical sulfurization process confined by the AAO pores. The electric transport and switching behavior of the Ag/Ag₂S HNA-filled AAo membrane was investigated by mechanical contact with a normal tungsten probe tens of micrometers in size. Electrical nanoswitching can be achieved by using an Ag/Ag₂S heterostructure, whereas, HNAs of ionic and/or mixed conductors can also be applied in novel nano-electrochemical devices for sensors, fuel sells, and batteries.

Original language	English
Pages (from-to)	971-975
Number of pages	5
Journal	Small
Volume	1
Issue number	10
DOIs	https://doi.org/10.1002/smll.200500155
Publication status	Published - 2005 Sep 1
Externally published	Yes

Keywords

Electrical transport
Electrochemical methods
Nanowires
Silver
Template synthesis

ASJC Scopus subject areas

Biotechnology
Biomaterials
Chemistry(all)
Materials Science(all)

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title = "Ionic-electronic conductor nanostructures: Template-confined growth and nonlinear electrical transport",

abstract = "A new template-assisted step-electrochemical method for fabricating metal-chalcogenide-based mixed conductors, is discussed. This method is applicable to forming Ag/Ag2S heteronanowire arrays (HNAs) that are advantageous for assembling nanoswitching devices. An ordered Ag/Ag2S HNA can be grown inside the pores of an anodic aluminum oxide (AAO) membrane with step-electrochemical reactions. It was observed that the growth of Ag 2S nanowires is dependent on an electrochemical sulfurization process confined by the AAO pores. The electric transport and switching behavior of the Ag/Ag2S HNA-filled AAo membrane was investigated by mechanical contact with a normal tungsten probe tens of micrometers in size. Electrical nanoswitching can be achieved by using an Ag/Ag2S heterostructure, whereas, HNAs of ionic and/or mixed conductors can also be applied in novel nano-electrochemical devices for sensors, fuel sells, and batteries.",

keywords = "Electrical transport, Electrochemical methods, Nanowires, Silver, Template synthesis",

author = "Changhao Liang and Kazuya Terabe and Tsuyoshi Hasegawa and Ryota Negishi and Takuro Tamura and Masakazu Aono",

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AU - Liang, Changhao

AU - Terabe, Kazuya

AU - Hasegawa, Tsuyoshi

AU - Negishi, Ryota

AU - Tamura, Takuro

AU - Aono, Masakazu

PY - 2005/9/1

Y1 - 2005/9/1

N2 - A new template-assisted step-electrochemical method for fabricating metal-chalcogenide-based mixed conductors, is discussed. This method is applicable to forming Ag/Ag2S heteronanowire arrays (HNAs) that are advantageous for assembling nanoswitching devices. An ordered Ag/Ag2S HNA can be grown inside the pores of an anodic aluminum oxide (AAO) membrane with step-electrochemical reactions. It was observed that the growth of Ag 2S nanowires is dependent on an electrochemical sulfurization process confined by the AAO pores. The electric transport and switching behavior of the Ag/Ag2S HNA-filled AAo membrane was investigated by mechanical contact with a normal tungsten probe tens of micrometers in size. Electrical nanoswitching can be achieved by using an Ag/Ag2S heterostructure, whereas, HNAs of ionic and/or mixed conductors can also be applied in novel nano-electrochemical devices for sensors, fuel sells, and batteries.

AB - A new template-assisted step-electrochemical method for fabricating metal-chalcogenide-based mixed conductors, is discussed. This method is applicable to forming Ag/Ag2S heteronanowire arrays (HNAs) that are advantageous for assembling nanoswitching devices. An ordered Ag/Ag2S HNA can be grown inside the pores of an anodic aluminum oxide (AAO) membrane with step-electrochemical reactions. It was observed that the growth of Ag 2S nanowires is dependent on an electrochemical sulfurization process confined by the AAO pores. The electric transport and switching behavior of the Ag/Ag2S HNA-filled AAo membrane was investigated by mechanical contact with a normal tungsten probe tens of micrometers in size. Electrical nanoswitching can be achieved by using an Ag/Ag2S heterostructure, whereas, HNAs of ionic and/or mixed conductors can also be applied in novel nano-electrochemical devices for sensors, fuel sells, and batteries.

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