Journal
NATURE COMMUNICATIONS
Volume 12, Issue 1, Pages -Publisher
NATURE RESEARCH
DOI: 10.1038/s41467-021-21462-3
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Funding
- NSFC [21872163, 22072090, 21991153, 21991150, 21777030, 21976037]
- National Engineering Laboratory for Flue Gas Pollution Control Technology and Equipment [NEL-KF-201903]
- National Engineering Laboratory for Mobile Source Emission Control Technology [NELMS2018B02]
- JSPS Kakenhi [JP20K05281, JP25820336]
- World Premier International (WPI) Center for Materials Nanoarchitectonics (MANA) of the National Institute for Materials Science (NIMS), Tsukuba, Japan
- Australian Research Council (ARC) [FL160100089]
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The study successfully fabricated stable atomic silver wires (ASWs) with excellent conductivity and stability, which could be applied in thermal electrical devices.
Atomic metal wires have great promise for practical applications in devices due to their unique electronic properties. Unfortunately, such atomic wires are extremely unstable. Here we fabricate stable atomic silver wires (ASWs) with appreciably unoccupied states inside the parallel tunnels of alpha-MnO2 nanorods. These unoccupied Ag 4d orbitals strengthen the Ag-Ag bonds, greatly enhancing the stability of ASWs while the presence of delocalized 5s electrons makes the ASWs conducting. These stable ASWs form a coherently oriented three-dimensional wire array of over 10nm in width and up to 1 mu m in length allowing us to connect it to nano-electrodes. Current-voltage characteristics of ASWs show a temperature-dependent insulator-to-metal transition, suggesting that the atomic wires could be used as thermal electrical devices.
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