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Zigzag Hollow Cracks of Silver Nanoparticle Film Regulated by Its Drying Micro-environment

By Ruiqiang Tao, Jianhua Zhang, Zhiqiang Fang, Honglong Ning, Jianqiu Chen, Caigui Yang, Yicong Zhou, Rihui Yao, Yongsheng Song and Junbiao Peng


Abstract We first verify the critical impact of evaporation on the formation of zigzag hollow cracks by regulating the drying micro-environment of silver nanoparticle film. Uneven evaporation and component segregation contributes to the flows along the surface and inside of droplets. Asymmetric vapor concentration distribution is capable of weakening the surface flow of droplets, thus suppressing the inner compressive stress of nanoparticles and leading to a surface morphology with less cracks. Although defect-free and surface smooth nanoparticle film deposited by a solution-based method remains a big challenge, our work has referential significance to optimize high-quality nanoparticle film with appropriate deposition and curing processes. Moreover, an optimization possibility through the drying micro-environment should be considered in high-end applications due to its enhanced effect on high-resolution patterns

Topics: Particles, nanosize, Sol-gel preparation, Solidification, Surfaces, Thin films, Materials of engineering and construction. Mechanics of materials, TA401-492
Publisher: SpringerOpen
Year: 2018
DOI identifier: 10.1186/s11671-018-2777-x
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