Scalable nanomanufacturing of 2D layered materials and their integration into nano-enabled systems

二维层状材料的可扩展纳米制造及其集成到纳米系统中

• 批准号: RGPIN-2019-06345
• 负责人: Rizvi, Reza
• 金额: $ 2.4万
• 依托单位: York University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=716006
• 关键词: Scalable; nanomanufacturing; 2D; layered; materials

This proposal outlines a research program on the scalable nanomanufacturing of 2D materials and their functional integration into systems and devices that benefit from nano-size scaling. 2D nanomaterials capture the essence of atomic-size effects, and can benefit a diverse range of applications from mechanical properties, electrical and thermal conductivities, high surface areas and unique quantum-mechanical effects. However, their full potential in everyday life is limited by the current methods of fabrication which compromise either quality or quantity. The proposed program seeks to address fundamental scientific and applied issues in production scaling of top-down processed 2D material systems by researching the recently conceived compressible flow exfoliation (CFE), which is a continuous and high-throughput method for mechanically exfoliating 2D layered materials using supersonic flows. The proposed research program seeks to elucidate the fundamental processing-structure-property relations regarding CFE that are necessary for any bench-to-floor transition. The approach will consist of (1) using theory and numerical tools, coupled with experimental observations to establish the exfoliation mechanism, (2) optimize the processing and post-processing conditions for fully continuous operations, (3) demonstrate feasible applications of CFE processed 2D nanomaterials in nano-enabled systems such as flexible electronics, thermal management and synthetic-nacre systems. Through this work, which will involve a total of 10 HQP (4 MS, 2 PhD and 4 UG), several existing knowledge gaps surrounding the (i) theory of 2D material fragmentation, (ii) effect of treatment time on 2D material quality, and (iii) continuous, rapid and environmentally friendly processing of 2D materials will be addressed. The promise of graphene and other 2D nanomaterials has not delivered thus far, because of a major disconnect between what's happening in the lab vs. the factory floor. A recent study (Kauling et al. 2018 in Advanced Materials) examined “graphene” from 60 suppliers and found that most were just expensive milled graphite and that on average only 10% of the product was 10 atomic layers or less. These purely commercial, smoke-and-mirror ventures are detracting from the fundamental R&D efforts that are still needed in scalable nanomanufacturing of 2D materials resulting in calls for developing standards for product qualification from organizations like International Organization of Standards (ISO) and the UK's National Physical Laboratory. The proposed research program on scalable nanomanufacturing of 2D materials and their integration into nano-enabled systems will rely on established as well as emerging concepts from 2D materials science, compressible gas dynamics, colloid surface science and composites design principles. It will benefit the Canadian natural resources and manufacturing sectors through the ensuing R&D and the skills and experience training of HQP.

该提案概述了二维材料的可扩展纳米制造及其与受益于纳米尺度缩放的系统和设备的功能集成的研究计划，二维纳米材料捕捉了原子尺寸效应的本质，并且可以从机械中受益于多种应用。然而，它们在日常生活中的全部潜力受到当前制造方法的限制，这些方法损害了质量或数量。通过研究最近提出的可压缩流剥离（CFE），解决了自上而下加工的二维材料系统的生产规模化问题，这是一种使用超音速流机械剥离二维层状材料的连续且高通量的方法。 拟议的研究计划旨在阐明有关 CFE 的基本加工-结构-性能关系，这些关系对于任何从工作台到地板的过渡都是必要的。该方法将包括 (1) 使用理论和数值工具，并结合实验观察来建立。剥离机制，(2) 优化完全连续操作的加工和后加工条件，(3) 展示 CFE 加工的二维纳米材料在纳米系统（例如柔性电子、热管理和合成珍珠母系统）中的可行应用。这项工作总共涉及 10 个 HQP（4 个 MS、2 个博士和 4 个 UG），以及围绕 (i) 二维材料碎裂理论、(ii) 处理时间对二维材料质量的影响的几个现有知识差距，以及(iii) 将解决二维材料的连续、快速和环保加工问题。 迄今为止，石墨烯和其他二维纳米材料的前景尚未兑现，因为实验室与工厂车间之间发生的情况存在重大脱节。最近的一项研究（Kauling 等人，2018 年发表于《先进材料》）对 60 个国家的“石墨烯”进行了研究。供应商发现，大多数只是昂贵的研磨石墨，平均只有 10% 的产品具有 10 个原子层或更少，这些纯粹的商业化、烟雾缭绕的企业。偏离了二维材料的可扩展纳米制造仍然需要的基础研发工作，导致国际标准组织 (ISO) 和英国国家物理实验室等组织呼吁制定产品鉴定标准。二维材料及其与纳米系统的集成将依赖于二维材料科学、可压缩气体动力学、胶体表面科学和复合材料设计原理中的既定概念和新兴概念。通过总部的后续研发以及技能和经验培训，将有利于加拿大的自然资源和制造业。