Ultrathin Deformable Materials and Protective Coatings Bio-inspired by Scaled Skin

受鳞片皮肤启发的超薄可变形材料和防护涂层

• 批准号: 1411320
• 负责人: Franck Vernerey
• 金额: $ 42万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-07-01 至 2018-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1411320&HistoricalAwards=false
• 关键词: Ultrathin; Deformable; Materials; Protective; Coatings

Non-Technical: This award by the Biomaterials program in the Division of Materials Research to University of Colorado, Boulder, is co-funded by the Mechanics of Materials program in the Division of Civil, Mechanical, and Manufacturing Innovation (ENG). Natural and human-made materials are often designed to perform the same functions, for example for structural support, robustness, protection, or being lightweight. Nature is therefore a significant source of inspiration for new and alternative designs for engineered materials, even for cutting-edge technologies such as flexible/stretchable electronics. Scaled skins in nature have remarkable mechanical properties including being compliant, resistant to penetration, and lightweight, all of which is achieved within an ultrathin membrane structure. This project will study the mechanics in scales and scaled skins in order to design and microfabricate a new bio-inspired material that can serve as a deformable, damage resistant, and robust protective coating. The resulting artificial scaled skins will be ultrathin, lightweight, transparent, and robust to mechanical deformations (puncture, bending, stretching, and compression) making them attractive for a wide range of applications. As part of these efforts, remote interactive sessions with the scanning electron microscopy (SEM) facilities at the University of Colorado will be developed and will be implemented in the high schools of rural communities in western Colorado. Technical: The mechanical behavior of scaled skin makes it attractive for application as a protective coating on flexible and stretchable engineered materials, in which an 'engineered scaled skin' will be able to conformally cover the substrate throughout the applied deformations and provide resistance to puncture or excessive bending, twisting, or stretching. Modern designs and implementations of human-made scaled skins, although sharing some mechanisms and duplicating some performance features of natural materials, have not achieved a systematic biomimetic transfer-of-technology because of a limited understanding of the fundamental mechanics in such systems. The objective of this project is to design, fabricate, and characterize an engineered scaled skin material using an integrated set of experiments and novel multiscale computational methods. This project will lead to (i) design principles for artificial scaled skins with mechanics comparable to those observed in nature, (ii) microfabrication techniques to produce artificial scales and scaled skins from microscale structures, and (iii) direct measurements and computational modeling of the behavior of the artificial scaled skins in response to mechanical deformation. Artificial scaled skins will be uniquely positioned as an engineered material for coating and protecting flexible/stretchable electronic devices by providing enhanced mechanical properties, robustness and durability, and transparency, thus enabling application on specialized flexible electronics such as surface mounted tactile probes and implantable bio-sensors. These efforts provide a platform to attract and train engineers in the computational design of materials, microfabrication, and experimental/computational mechanics.

非技术：生物材料计划在科罗拉多大学博尔德分校的材料研究部获得该奖项，由材料机制计划在民用，机械和制造创新（ENG）的材料机械计划中共同资助。天然和人制造的材料通常被设计为执行相同的功能，例如用于结构支持，鲁棒性，保护或轻量级。因此，即使在诸如柔性/可拉伸电子设备之类的尖端技术中，大自然是工程材料的新设计和替代设计的重要灵感来源。 自然界中的缩放皮肤具有显着的机械性能，包括符合性，对穿透性的抵抗力和轻量级，所有这些都可以在超薄膜结构中实现。 该项目将以尺度和缩放皮肤研究机械师，以设计和微观生物启发的新材料，该材料可以用作可变形，耐损伤和可靠的保护性涂层。 由此产生的人工缩放皮肤将是超薄，轻巧，透明和对机械变形（穿刺，弯曲，拉伸和压缩）的鲁棒，使它们在广泛的应用中具有吸引力。 作为这些努力的一部分，将开发科罗拉多大学的扫描电子显微镜（SEM）设施的远程互动会议，并将在西科罗拉多州的农村社区的高中实施。 技术：缩放皮肤的机械行为使其对在柔性且可拉伸的工程材料上的保护性涂料具有吸引力，其中“工程缩放的皮肤”将能够在整个施加的变形过程中统一覆盖基板，并提供对穿刺或过度弯曲，扭曲，扭曲或拉伸的阻力。 尽管共享某些机制并复制天然材料的某些性能特征，但现代的设计和实施人类制造的皮肤的现代设计和实施尚未实现系统的仿生转移技术转移，因为对这种系统中的基本力学的了解有限。 该项目的目的是使用一组集成的实验和新颖的多尺度计算方法来设计，制造和表征工程缩放的皮肤材料。 该项目将导致（i）具有与自然界中观察到的机制相当的人工缩放皮肤的设计原理，（ii）从显微镜结构中产生人造尺度和缩放的皮肤的微加工技术，（iii）直接测量和计算对机械化构造的人造皮肤的行为的计算模型。 人造缩放的皮肤将通过提供增强的机械性能，鲁棒性和耐用性以及透明度，作为一种工程材料作为涂层和保护柔性/可拉伸电子设备的工程材料的独特位置，从而可以在专业的柔性电子设备上应用，例如表面上安装的触觉探针和可植入的生物传感器。 这些努力为吸引和培训工程师的平台提供了材料，微加工和实验/计算机制的计算设计。