Soeun Lee, Hyeonbin Moon, Juri Kim, Seunghwa Ryu, Soon Mo Park, Dong Ki Yoon
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引用次数: 0
摘要
严重干旱时，土壤上会出现裂缝，这激发了利用干燥的脱氧核糖核酸（DNA）薄膜进行合理图案化应用的想法。DNA 是自然界中大量产生的生物材料之一，在高浓度条件下呈各向同性液晶（LC）相。水合状态下的 DNA 纳米结构可进行取向控制，并可扩展至产生干燥诱导裂纹。我们利用四氢呋喃（THF）通过有机溶剂诱导脱水（OSID）诱导机械断裂，探索了取向 DNA 薄膜中受控裂纹的产生。相应的模拟结果表明，脱水过程中脱氧核糖核酸的长轴收缩与裂纹扩展方向之间存在很强的相关性。裂纹是通过简单的刷洗和三维打印方法控制的。这种对齐裂纹的简便方法将用于潜在的图案化应用。本文受版权保护。保留所有权利。
On-Demand Crack Formation on DNA Film via Organic Solvent-Induced Dehydration
Crack is found on the soil when severe drought comes, which inspires the idea to rationalize patterning applications using dried deoxyribonucleic acid (DNA) film. DNA is one of the massively produced biomaterials in nature, showing the lyotropic liquid crystal (LC) phase in highly concentrated conditions. DNA nanostructures in the hydrated condition can be orientation controlled, which can be extended to make dryinginduced cracks. The controlled crack generation in oriented DNA films by inducing mechanical fracture through organic solvent-induced dehydration (OSID) using tetrahydrofuran (THF) is explored. The corresponding simulations show a strong correlation between the long axis of DNA due to the shrinkage during the dehydration and in the direction of crack propagation. The cracks are controlled by simple brushing and a 3D printing method. This facile way of aligning cracks will be used in potential patterning applications.
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