Patterns from drying drops
Patterns from drying drops
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DOI：
10.1016/j.cis.2013.05.002
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发表时间：
2014-04-01
影响因子：
15.6
通讯作者：
Sefiane, Khellil
中科院分区：
文献类型：
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作者：
Sefiane, Khellil
本综述的目的是研究不同的沉积模式，从干燥液滴的一系列流体：油漆，聚合物和生物流体。这包括研究控制模式的机制，以及如何操纵它们以用于某些应用，如医疗诊断和纳米技术。本文介绍了蒸发过程中液滴的基本性质。这些包括轮廓演变（恒定接触角状态（CCAR）和恒定半径状态（CRR））和内部流动（Marangoni和毛细管流动（Deegan等人[22]））。理解这些过程和现象背后的基本物理对于理解影响沉积模式的因素至关重要。最后总结了每种液体的应用以及沉积模式的操作是如何有用的。最常见的模式是咖啡环存款[27]，在真实的生活中经常可以从茶/咖啡污渍和水彩画中看到。这是由被称为毛细流动的向外流动引起的，毛细流动将悬浮颗粒带到润湿区域的边缘。发现的其他模式是均匀的，中央沉积物和同心环，这是由向内的马兰戈尼流造成的。复杂的生物流体显示出一系列不同的模式，可用于诊断患者。(C)2013爱思唯尔有限公司版权所有。
The objective of this review is to investigate different deposition patterns from dried droplets of a range of fluids: paints, polymers and biological fluids. This includes looking at mechanisms controlling the patterns and how they can be manipulated for use in certain applications such as medical diagnostics and rianotechnology. This review introduces the fundamental properties of droplets during evaporation. These include profile evolution (constant contact angle regime (CCAR) and constant radius regime (CRR)) and the internal flow (Marangoni and Capillary flow (Deegan et al. [22])). The understanding of these processes and the basic physics behind the phenomenon are crucial to the understanding of the factors influencing the deposition patterns. It concludes with the applications that each of these fluids can be used in and how the manipulation of the deposition pattern is useful.The most commonly seen pattern is the coffee-ring deposit [27] which can be seen frequently in real life from tea/coffee stains and in water colour painting. This is caused by an outward flow known as capillary flow which carries suspended particles out to the edge of the wetted area. Other patterns that were found were uniform, central deposits and concentric rings which are caused by inward Marangoni flow. Complex biological fluids displayed an array of different patterns which can be used to diagnose patients. (C) 2013 Elsevier B.V. All rights reserved.