Journal
LANGMUIR
Volume 38, Issue 41, Pages 12682-12688Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.2c02176
Keywords
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Funding
- National Natural Science Foundation of China
- [52073026]
- [U20A20264]
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This study presents a model for quantifying the capillary force between two nano-objects and investigates the capillary force between silver nanowires (AgNWs) and carbon nanotubes (CNTs) during water evaporation. The results demonstrate the significance of nano-object radius in capillary-force-induced welding.
Capillary-force-induced welding can effectively reduce the contact resistance between two silver nanowires (AgNWs) by merging the NW-NW junctions. Herein, we report a model for quantifying the capillary force between two nano-objects. The model can be used to calculate the capillary force generated between AgNWs and carbon nanotubes (CNTs) during water evaporation. The results indicate that the radius of one-dimensional nano-objects is crucial for capillary-force-induced welding. AgNWs with larger radii can generate a greater capillary force (FAgNW-AgNW) at NW-NW junctions. In addition, for AgNW/CNT hybrid films, the use of CNTs with a radius close to that of AgNWs can result in a larger capillary force (FAgNW-CNT) at NW-CNT junctions. The reliability of the model is verified by measuring the change in sheet resistance before and after capillary-force-induced welding of a series of AgNW and AgNW/CNT conductive films with varying radii.
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