ERI: Enabling tunable electronic device fabrication on flexible substrates using Barium Strontium Titanate (BST) printable ink development

ERI：使用钛酸锶钡 (BST) 可印刷油墨开发，在柔性基板上实现可调电子设备制造

• 批准号: 2301693
• 负责人: Oshadha Ranasingha
• 金额: $ 19.75万
• 依托单位: University of Massachusetts Lowell
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-06-01 至 2025-05-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2301693&HistoricalAwards=false
• 关键词: ERI; Enabling; tunable; electronic; device

Printed or additive manufacturing has application potential as a low-cost, high-resolution, fast prototyping of a range of complex circuits. Printed tunable devices proposed in this work will allow the electrical tuning of circuit functions, drastically reducing the cost, footprint, and weight of the overall circuitry compared to mechanically tunable electrical devices. These printed tunable electrical devices are critical to national security, especially radio communications. In addition, low-cost Internet of Things (IoT) and wearable devices will significantly benefit from the proposed tunable flexible electrical devices. However, currently, there are no tunable printable inks to fabricate tunable electrical devices on flexible substrates. In addition, existing printable materials need high-temperature processing (greater than 800 °C) to achieve the required tunability, which will damage most types of flexible substrates, such as plastics, paper, and fabrics. Multiple challenges and unique bottlenecks are associated with printable inks, and there are limited ongoing research efforts to solve these issues. This project will cover novel tunable materials syntheses, printable ink development, and the design, simulation, and fabrication of tunable electrical devices. This project will open a new paradigm of tunable flexible electronic devices. Both undergraduate and graduate students will directly benefit from this project, and the proposed educational outreach projects will enhance middle school students' interest and awareness of science and engineering careers. In addition, the proposed project's novel findings will be integrated into graduate-level printed electronics-related teaching.This project will comprehensively advance the fundamental understanding of the utilization of sinterless Barium Strontium Titanate (BST) nanoparticles as a tunable material for flexible electronics. The composition of BST nanoparticles to achieve the highest possible dielectric constant and tunability at room temperature (without sintering) will be identified. An in depth investigation will be carried out to determine the effects of the Ba:Sr molar fraction, the size, and the packing density of BST nanoparticles on dielectric tunability. High-resolution X-Ray diffraction patterns of sinterless BST nanoparticles under an applied electric field will be used to investigate the correlation between the variation of lattice parameters and the dielectric tunability. This will give a greater insight into the dielectric tunability of sinterless BST nanoparticles, which have not been experimentally reported yet. Lowering the required bias voltage to less than 25 Volts is a significant achievement that enables the usage of printed tunable flexible devices in real-world applications, such as phase shifters, frequency-selective surfaces, and phased array antennas. These devices are not currently feasible for real-world applications. The proposed work will significantly advance the knowledge of sinterless BST nanoparticles as a tunable material, nanoparticle ink formulation for direct-write printing technologies, and fully printed tunable radio and microwave frequency devices on flexible substrates.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

印刷或添加的制造具有用于一系列复杂电路的低成本，高分辨率，快速原型制作的应用潜力。与机械可调的电动设备相比，这项工作中提出的打印可调设备将允许电路功能的电气调整，从而大大降低整体电路的成本，足迹和重量。这些印刷的可调电动设备对国家安全至关重要，尤其是无线电通信。此外，低成本的物联网（IoT）和可穿戴设备将从提议的可调柔性电气设备中大大受益。但是，目前，在柔性基材上尚无可调式墨水来对织物进行可调的电气设备。此外，现有的可打印材料需要高温加工（大于800°C）才能达到所需的可调性，这将损害大多数类型的柔性底物，例如塑料，纸张和织物。多个挑战和独特的瓶颈与可打印油墨有关，并且正在进行的研究工作有限，以解决这些问题。该项目将涵盖新颖的可调材料合成，可打印的墨水开发以及可调电气设备的设计，仿真和制造。本科生和研究生都将直接从该项目中受益，拟议的教育外展项目将增强中学生对科学和工程职业的兴趣和认识。此外，拟议项目的新发现将集成到研究生级印刷电子相​​关的教学中。该项目将全面地促进对利用无颗粒液氯腹中钛酸盐（BST）纳米粒子作为灵活电子产品的可调材料的基本理解。 BST纳米颗粒的组成将在室温下达到最高可能的介电常数和可密钉性（无需烧结）。将进行深入研究，以确定BA摩尔级分，BST纳米颗粒对饮食可密可可可的作用。在应用电场下，无敏捷BST纳米颗粒的高分辨率X射线衍射模式将用于研究晶格参数变化与饮食可密歇根可密歇根可密tu菜之间的相关性。这将使您更深入地了解无敏捷BST纳米颗粒的饮食可命中性，这些可刺激性尚未在实验上报告。将所需的偏置电压降低到小于25伏是一项重大成就，它可以在实际应用中使用印刷的可调柔性设备，例如相位变速器，频率选择性表面和阶段的阵列天线。这些设备目前不适合现实世界应用。拟议的工作将大大提高无敏捷的BST纳米颗粒作为可调材料，直接印刷技术的纳米颗粒墨水公式，以及完全印刷的可调无线电和微波频率设备，这是NSF的法定任务，反映了NSF的法定任务，并通过使用基金会的Merit进行了评估，并通过评估了CRCRITAIL和BRODITIAL和BRODITIAL和BRODITAIL和BRODITAILATIAL和BRODITAIL和BRODITIAS和BRODITIAS和BRODITIAS。