具有形状记忆行为和润湿可编程形貌的智能机械可调表面
Smart mechanically tunable surfaces with shape memory behavior and wetting-programmable topography
摘要：
这一贡献报告首次制造和调查的结构化表面的润湿性能，包含laminates具有非常高的纵横比-高度/宽度比证明为57：1。使用具有可调机械性能和形状记忆行为的聚合物制成层状表面。发现这种结构化表面的润湿性质取决于温度和热处理历史-当聚合物是软的时，薄片在升高的温度下或在冷却至室温后更容易润湿，因为薄片更容易变形。由液滴变形的薄片的形状在低温下可以暂时固定，并且在加热到室温时保持固定。加热到形状记忆聚合物的转变温度以上，可以恢复原始形状。高纵横比不仅允许手动调整几何形状，如之前报道的大多数工作中所做的那样，而且还可以通过液滴进行调整并通过温度进行控制。液体与温敏形貌的结合呈现出一种新的润湿行为。此外，可以控制机械性能-聚合物在室温下可以是硬的或软的，这取决于热预历史。这种行为为设计用于微流体装置的新型智能元件（例如智能阀）提供了新的机会，其状态和行为可以通过热刺激来切换：阀可以打开或不能打开，能够关闭或可以固定在打开或关闭状态。
英文摘要：
This contribution reports for the first time on fabrication and investigation of wetting properties of structured surfaces containing lamellae with an exceptionally high aspect ratio - height/width ratio demonstrated of 57:1. The lamellar surface was made using a polymer with tunable mechanical properties, and shape-memory behavior. It was found that wetting properties of such structured surfaces depend on temperature and thermal treatment history - lamellae are wetted easier at elevated temperature or after cooling to room temperature when the polymer is soft because of the easier deformability of lamellae. The shape of lamellae deformed by droplets can be temporarily fixed at low temperature and remains fixed upon heating to room temperature. Heating above the transition temperature of the shape-memory polymer restores the orginal shape. The high aspect ratio allows tuning of geometry not only manually, as it is done in most works reported previously, but can also be made by a liquid droplet and is controlled by temperature. The liquid in combination with thermoresponsive topography present a new kind of wetting behavior. Moreover, the mechanical properties can be controlled - the polymer can either be hard or soft at room temperature depending on thermal pre-history. This behavior opens new opportunities for the design of novel smart elements for microfluidic devices such as smart valves, whose state and behavior can be switched by thermal stimuli: valves can or cannot be opened, are able to close or can be fixed in an open or closed states.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
