Mechanism of Heat-Induced Fusion of Silver Nanowires
| Autor: | Joon Young Lee, Chang Lae Kim, Dong Gap Shin, Dae Eun Kim, Jong Souk Yeo |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Heat induced
Fusion Void (astronomy) Multidisciplinary Materials science lcsh:R lcsh:Medicine 02 engineering and technology Silver nanowires 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Article 0104 chemical sciences Chemical engineering Nanoscience and technology Electrical resistivity and conductivity Transmission electron microscopy lcsh:Q Extrusion lcsh:Science 0210 nano-technology |
| Zdroj: | Scientific Reports Scientific Reports, Vol 10, Iss 1, Pp 1-8 (2020) |
| ISSN: | 2045-2322 |
| DOI: | 10.1038/s41598-020-66304-2 |
| Popis: | Physical changes in arranged silver nanowires were monitored during progressive heating inside a transmission electron microscope. Using the in-situ experimental method, overall variation of silver nanowires and movement of the silver atoms could be assessed. The physical morphology of silver nanowires was rapidly transformed above 350 °C as they fused with each other, which led to extrusion of the silver atoms. Around 550 °C, silver nanowires were almost fused into one, filling a relatively large void between silver nanowires. However, above 575 °C, the united silver nanowire was completely cut off, starting from the region that was suspected to have defects. For the first time, the fusion of arranged silver nanowires and the configurational changes of silver atoms during heating were visualized, and the migration between silver atoms and the damage mechanism of silver nanowires were assessed. Moreover, the relationship of physical morphology and electrical property of silver nanowires according to the temperature were investigated using the ex-situ experimental method. As silver nanowires started to split at 300 °C, the electrical conductivity deteriorated greatly. Beyond 350 °C, the electrical conductivity was completely lost while silver nanowires disintegrated rapidly, and silver nanowires completely disappeared at 450 °C. |
| Databáze: | OpenAIRE |
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