Engineering Fellowships for Growth: Polar Materials for Additive Manufacturing

增长工程奖学金：用于增材制造的极性材料

• 批准号: EP/M002462/1
• 负责人: Andrew Bell
• 金额: $ 131.35万
• 依托单位: University of Leeds
• 依托单位国家: 英国
• 项目类别: Fellowship
• 财政年份: 2014
• 资助国家: 英国
• 起止时间: 2014 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FM002462%2F1
• 关键词: Engineering; Fellowships; Growth; Polar; Materials

The concept of Additive Manufacturing (AM) is seen as an important contributor to the re-balancing of UK manufacturing industry. AM enables the manufacture of complex structures with novel combinations of materials, to create innovative products for both the consumer and industrial markets. It can be applied equally to mass-production or bespoke products. The intrinsic economy of raw material usage keeps costs low and the rapid turn-round of design iterations minimizes the time to market for new products. Due to progress in organic conductors and semiconductors, the concept of plastic electronics is a major contributor to multifunctional products using AM. These advances are evident in many consumer products including smartphones and tablet PCs. The proposed Fellowship is intended to address a capability gap in AM and flexible electronics. The missing capability is in the AM-compatible integration of highly polar solids, as used in capacitors, piezoelectric devices and infra-red sensors. These functions are normally satisfied by ferroelectric oxides (e.g. barium titanate and PZT) in the form of ceramics which are sintered at high temperature, and can currently only be deployed in the form of discrete components. This limits both the flexibility and potential cost-savings offered by AM. Printable organic materials, as used in photonic functions, do not provide an acceptable solution to the demand for such highly polar dielectrics as the relevant figures of merit are one or two orders of magnitude lower than oxides. Capacitors and piezo-transducers are ubiquitous in conventional electronics and the ability to design them into printable products is a "must have" for future AM systems, allowing full integration of pressure sensors, energy harvesting and energy storage capacitors, for example.The project will employ a bottom-up, holistic approach with three innovations: (i) the preparation of highly crystalline, monodisperse, ferroelectric nanocrystals, (ii) the implementation of multi-scale modelling for the optimal design of printable, high-polarisability devices and (iii) utilization of ferroelectric polarization to promote self-assembly of nanocrystals into functionally beneficial crystallographic orientations during printing operations. These innovations will be employed to design new printable functional components that can be integrated into electromechanical products produced by AM techniques. A successful outcome will result in reduced costs and lead times for integrating new functional materials into AM products. The Fellowship will also be used as a platform to (i) initiate programmes on new applications of ferroelectric nanocrystals and (ii) facilitate the re-focusing of functional oxide research on goals coherent with medium to long-term UK industry needs.

增材制造（AM）的概念被视为英国制造业再平衡的重要贡献者。增材制造能够利用新颖的材料组合制造复杂的结构，从而为消费者和工业市场创造创新产品。它同样适用于批量生产或定制产品。原材料使用的内在经济性可降低成本，设计迭代的快速周转可最大限度地缩短新产品的上市时间。由于有机导体和半导体的进步，塑料电子概念是使用增材制造的多功能产品的主要贡献者。这些进步在包括智能手机和平板电脑在内的许多消费产品中都很明显。拟议的奖学金旨在解决增材制造和柔性电子产品方面的能力差距。所缺少的能力在于高极性固体的 AM 兼容集成，如电容器、压电器件和红外传感器中所使用的。这些功能通常通过高温烧结陶瓷形式的铁电氧化物（例如钛酸钡和PZT）来满足，目前只能以分立元件的形式使用。这限制了增材制造提供的灵活性和潜在的成本节约。用于光子功能的可印刷有机材料不能为这种高极性电介质的需求提供可接受的解决方案，因为相关的品质因数比氧化物低一两个数量级。电容器和压电传感器在传统电子产品中无处不在，将它们设计成可打印产品的能力是未来增材制造系统的“必备条件”，例如允许压力传感器、能量收集和储能电容器的完全集成。该项目将采用自下而上的整体方法，具有三项创新：(i) 制备高度结晶、单分散、铁电纳米晶体，(ii) 实施多尺度建模以优化设计可印刷的高极化率器件和（iii）利用铁电极化在印刷操作过程中促进纳米晶体自组装成功能上有益的晶体取向。这些创新将用于设计新的可打印功能组件，这些组件可以集成到增材制造技术生产的机电产品中。成功的结果将降低将新功能材料集成到增材制造产品中的成本和交货时间。该奖学金还将用作一个平台，以（i）启动铁电纳米晶体新应用的项目，以及（ii）促进功能氧化物研究重新聚焦于与英国中长期行业需求相一致的目标。

项目成果

Requirements for the transfer of lead-free piezoceramics into application

• DOI: 10.1016/j.jmat.2018.02.001
• 发表时间: 2018-03-01
• 期刊: JOURNAL OF MATERIOMICS
• 影响因子: 9.4
• 作者: Koruza, Jurij;Bell, Andrew J.;Roedel, Jurgen
• 通讯作者: Roedel, Jurgen

Expanding the application space for piezoelectric materials

• DOI: 10.1063/5.0035416
• 发表时间: 2021-01-01
• 期刊: APL MATERIALS
• 影响因子: 6.1
• 作者: Bell, Andrew J.;Comyn, Tim P.;Stevenson, Timothy J.
• 通讯作者: Stevenson, Timothy J.

Electric field dependent local structure of ( K x N a 1 - x ) 0.5 B i 0.5 Ti O 3

( K x N a 1 - x ) 0.5 B i 0.5 Ti O 3 的电场相关局部结构

• DOI: 10.1103/physrevb.96.014118
• 发表时间: 2017
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: Goetzee-Barral A

Ferroelectric Behavior in Exfoliated 2D Aurivillius Oxide Flakes of Sub-Unit Cell Thickness

• DOI: 10.1002/aelm.201901264
• 发表时间: 2020-01-30
• 期刊: ADVANCED ELECTRONIC MATERIALS
• 影响因子: 6.2
• 作者: Keeney, Lynette;Smith, Ronan J.;Whatmore, Roger W.
• 通讯作者: Whatmore, Roger W.

A classical mechanics model for the interpretation of piezoelectric property data

• DOI: 10.1063/1.4937135
• 发表时间: 2015-12
• 期刊: Journal of Applied Physics
• 影响因子: 3.2
• 作者: A. Bell