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| 1 | Geometrical Deposits on Microstructured Surfaces显示文摘Research into evaporating droplets on patterned surfaces has grown exponentially,since the capacity to control droplet morphology has proven to have significant technological utility in emerging areas of fundamental research and industrial applications.Here,we incorporate two interest domains-complex wetting patterns of droplets on structured surfaces and the ubiquitous coffee-ring phenomenon of nanofluids containing dispersed aluminium oxide particles.We lay out the surface design criteria by quantifying the effect of pillar density and shape on the wetting footprint of droplets,yielding complex polygon droplet geometries.Our work is not constrained to pure liquids only,as we delve into the shape selection of particle-laden droplets of different concentrations.We visualise the deposition patterns through microscopy on surfaces exhibiting different features and further establish the ordering of particles on microscale surface asperities.At a high nanofluid concentration,we observe intriguing self-assembly of particles into highly ordered intricate structures.The collective findings of this work have the potential to enhance many industrial technologies,particularly attractive for high performance optical and electrical devices. | Veronika Kubyshkina Daniel Orejon Coinneach Mackenzie Dover Khellil Sefiane | 2020 | Journal of Bionic Engineering2020，17，4： | 1 |
| 2 | 中红外波段超广角抗反射微纳结构的研究显示文摘采用时域有限差分法(FDTD)设计了一种具有超广角中红外波段减反射Si材料亚波长周期微纳结构,实现了在超广角(15°~80°)斜入射时大幅提高减反射性能。使用控制变量法分析了亚波长结构的周期、结构高度、底端直径和顶端直径对反射率的影响,并剖析结构参数对宽带和宽角度的影响机理。通过仿真计算研究表明:区别于传统的减反射结构,四棱台结构在中红外波段超广角入射时可以保持较低的反射率,平均反射率低至1%左右,最低可至0.01%,为超广角宽带抗反射结构的设计提供了新的设计方案。 | 张艺馨 张亢 林鹤 吴锦双 沈思彤 付跃刚 | 2022 | 长春理工大学学报(自然科学版)2022，45，3： | 0 |
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