CAREER: Morphological Control of Crystalline Materials Using Deformations of Elastomeric Substrates and Fluid Flow for the Bottom-up Fabrication of Hybrid Materials

职业：利用弹性体基底的变形和流体流动来控制晶体材料的形态，以自下而上地制造混合材料

• 批准号: 1555356
• 负责人: Stephen Morin
• 金额: $ 64.95万
• 依托单位: University of Nebraska-Lincoln
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-03-01 至 2022-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1555356&HistoricalAwards=false
• 关键词: CAREER; Morphological; Control; Crystalline; Materials

Non-technical AbstractThe combination of hard materials (ceramics or semiconductors) and soft materials (polymers) into a single construct enables technologies (e.g., soft electronics and low-cost sensors) with new forms and functions that promise to broadly impact areas such as health care, consumer electronics, and public safety; however, combining materials with such disparate properties (thermal, mechanical, chemical, etc.) directly into hybrid structures is challenging. In this project the research team investigates dynamic solution- and surface-chemical processes that provide new methods for the controlled synthesis of crystalline materials and their direct integration with soft materials yielding hybrid structures with useful properties (e.g., optical, electrical, etc.). In complimentary activities, the principal investigator uses the methods and outcomes of the research activities in the creation of new educational curriculum and outreach activities that strengthen the tradition of innovation and the participation of underrepresented groups (especially Native American youths) in materials science in Nebraska. Technical AbstractWith the support of the Solid State and Materials Chemistry program in the Division of Materials Research and the EPSCoR program, this project seeks to generate new approaches to controlling crystal growth that enable the direct fabrication of hybrid structures which combine soft materials with complex, three-dimensional, inorganic materials. Such seamless integration of components with exceedingly different properties (thermal and mechanical) cannot be achieved using traditional microfabrication. This project includes the following specific goals: (i) Utilize mechanical deformations of chemically functionalized soft polymers to actively control the synthesis, assembly, and 2D organization of hard materials enabling the fabrication of hybrid structures with reconfigurable properties. (ii) Synthesize hierarchical, 3D crystal morphologies and hybrid materials using the effects of flowing liquids in soft reactors. The approaches to controlling crystal growth under investigation emphasize dynamic manipulation of physical variables surface chemistry and fluid flow that go beyond those available in systems which use rigid materials or static conditions. Specifically, the deformation of elastomeric substrates provides a convenient way to reversibly change surface chemistry and manipulate the spatial organization of crystals; the flow of liquids in reactors can simultaneously tune the chemical and fluid-mechanical environments of crystals. These research activities contribute significantly to the realization of new, additive approaches to the direct production of functional, hybrid materials with applications in existing and emerging technologies including, microelectronics, energy, and soft, stretchable, and flexible electronics and sensors.

将硬材料（陶瓷或半导体）和软材料（聚合物）组合成单个结构使得技术（例如，软电子和低成本传感器），具有新的形式和功能，有望广泛影响医疗保健，消费电子和公共安全等领域;然而，将具有不同性质（热，机械，化学等）的材料组合在一起，直接转化为混合结构是一个挑战。 在这个项目中，研究小组研究了动态溶液和表面化学过程，这些过程为晶体材料的可控合成及其与软材料的直接整合提供了新方法，从而产生了具有有用特性的混合结构（例如，光学的、电学的等等）。 在免费活动中，首席研究员使用研究活动的方法和成果来创建新的教育课程和推广活动，以加强创新传统和代表性不足的群体（特别是美洲原住民青年）参与内布拉斯加州的材料科学。 技术摘要在材料研究部的固态和材料化学计划以及EPSCoR计划的支持下，该项目寻求产生控制晶体生长的新方法，使混合结构的直接制造成为可能，这种混合结构将联合收割机软材料与复杂的三维无机材料结合起来。 使用传统的微加工无法实现具有极其不同的特性（热和机械）的组件的这种无缝集成。 该项目包括以下具体目标：（i）利用化学功能化软聚合物的机械变形来主动控制硬材料的合成，组装和2D组织，从而能够制造具有可重构特性的混合结构。 (ii)利用软反应堆中流动液体的影响合成分层、3D晶体形态和混合材料。 研究中控制晶体生长的方法强调对物理变量、表面化学和流体流动的动态操纵，这些方法超出了使用刚性材料或静态条件的系统。 具体而言，弹性体基底的变形提供了一种方便的方式来可逆地改变表面化学和操纵晶体的空间组织;反应器中的液体流动可以同时调节晶体的化学和流体力学环境。 这些研究活动为实现新的增材方法做出了重大贡献，这些方法可以直接生产功能性混合材料，并应用于现有和新兴技术，包括微电子，能源以及柔软，可拉伸和柔性电子产品和传感器。