Lead-free Radio-pure Textured Piezoelectric Ceramics for Acoustic Sensors in Dark Matter Search

用于暗物质搜索中声学传感器的无铅无线电纯纹理压电陶瓷

• 批准号: 1936432
• 负责人: Bed Poudel
• 金额: $ 200万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1936432&HistoricalAwards=false
• 关键词: Lead; free; Radio; pure; Textured

NON-TECHNICAL DESCRIPTION: Currently most of the piezoelectric ceramic materials utilized for actuator and transducer applications contain high concentrations of lead, which is toxic for both humans and environment. If the products containing lead are not properly discarded or recycled, then there is high possibility for lead entering the soil and water streams. Further, there is health-risk posed for humans handling the lead-based materials during manufacturing and deployment. Thus, environmental regulations in many parts of the world are requiring the elimination of lead from all consumer items. In applications such as acoustic detectors, there is essential need to find lead-free piezoelectric alternatives to achieve desired sensitivity. However, electrical properties of all the known lead-free piezoelectric materials remains lower than those lead-based materials. In this project, lead-free piezoelectric ceramics are being studied to discover composition and microstructure with enhanced piezoelectric response. Outcomes from this research stand to strengthen the US piezoelectric ceramic industry leadership. Lead-free material formulations and specialized ceramic manufacturing methodology are being provided to the US piezoelectric manufacturers. Undergraduate and graduate students, high school science teachers and postdoctoral researchers are being professionally trained in this project to develop understanding of ceramic industry and piezoelectric applications. NSF I-Corps program is leveraged to support the training of students to become drivers of research commercialization. Furthermore, students are being exposed to methods for transition of university-based technologies through partnership with Ben Franklin Technology Partner’s TechCelerator.TECHNICAL DETAILS: In this project, (K,Na)NbO3 based high piezoelectric constant – high Curie temperature lead-free piezoelectric material is being designed, synthesized and characterized. Template grain growth process is used to synthesize ceramics with specific crystallographic grain orientation. Using the grain-oriented materials, extensive investigations are being conducted to understand how phase transitions, domain structures, and local crystal structures influence the piezoelectric response. Furthermore, the research focus is being placed on understanding the influence of relaxor state on piezoelectric performance. Phase field model is being used to investigate the role of local structural heterogeneity on electromechanical parameters. Self-polarization due to grain orientation along the spontaneous polarization direction is being quantified to reveal its contribution in achieving large piezoelectric response in an engineered material. Synthesized textured piezoelectric elements with requisite electromechanical behavior is incorporated into acoustic transducers, subjected to the extreme environmental conditions of the bubble chamber and tested for performance in small environmental test vessels. Knowledge generated from the project on lead-free material design and manufacturing is being provided to US companies to expedite their progress in finding lead-free alternatives and thereby developing next generation of applications such as medical imaging, ultrasonic home appliances, acoustic detectors and precision positioning systems. Undergraduate and graduate students are being trained in cross-cutting multidisciplinary disciplines of piezoelectric ceramics, ceramic processing science, multiscale characterization, acoustics, and physics.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.

非技术描述：目前，大多数用于致动器和换能器应用的压电陶瓷材料含有高浓度的铅，这对人类和环境都是有毒的。如果含铅的产品没有被适当地丢弃或回收，那么铅很有可能进入土壤和水流。此外，在制造和部署过程中处理铅基材料的人类也存在健康风险。 因此，世界上许多地方的环境法规要求从所有消费品中消除铅。在声学探测器等应用中，必须找到无铅压电替代品，以实现所需的灵敏度。然而，所有已知的无铅压电材料的电性能仍然低于那些铅基材料。在这个项目中，无铅压电陶瓷正在研究，以发现具有增强压电响应的成分和微观结构。这一研究成果有利于加强美国压电陶瓷产业的领导地位。无铅材料配方和专门的陶瓷制造方法正在向美国压电制造商提供。本科生和研究生，高中科学教师和博士后研究人员正在接受该项目的专业培训，以发展对陶瓷工业和压电应用的理解。NSF I-Corps计划用于支持学生的培训，使其成为研究商业化的驱动力。此外，通过与本富兰克林技术合作伙伴的技术专家合作，学生们将接触到大学技术过渡的方法。技术成果：在该项目中，设计、合成和表征了（K，Na）NbO 3基高压电常数-高居里温度无铅压电材料。模板晶粒生长法是用来合成具有特定晶粒取向的陶瓷材料的一种方法。使用晶粒取向的材料，正在进行广泛的调查，以了解如何相变，域结构和局部晶体结构的影响的压电响应。此外，研究的重点放在了解弛豫状态对压电性能的影响。相场模型被用来研究局部结构非均匀性对机电参数的影响。由于晶粒取向沿着自发极化方向的自极化被量化，以揭示其在工程材料中实现大的压电响应的贡献。将具有必要机电行为的合成纹理压电元件并入声换能器中，经受气泡室的极端环境条件，并在小型环境测试容器中测试性能。无铅材料设计和制造项目产生的知识将提供给美国公司，以加快他们在寻找无铅替代品方面的进展，从而开发下一代应用，如医学成像，超声波家用电器，声学探测器和精密定位系统。本科生和研究生正在接受压电陶瓷、陶瓷加工科学、多尺度表征、声学和物理学等交叉学科的培训。该奖项反映了NSF的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

High-Acoustic Sensitivity Radiopure Piezoelectric Materials for Dark Matter Detection

用于暗物质探测的高声灵敏度放射性纯压电材料

• DOI: 10.1021/acsaelm.3c01116
• 发表时间: 2023
• 期刊: ACS Applied Electronic Materials
• 影响因子: 4.7
• 作者: Kang, Min Gyu;Yan, Yongke;Maurya, Deepam;Song, Hyun-Cheol;Yang, Lijuan;Levine, Ilan;Behnke, Edward;Borsodi, Haley;Fustin, Drew;Nanda, Aman
• 通讯作者: Nanda, Aman

Scintillating Bubble Chambers for Rare Event Searches

用于罕见事件搜索的闪烁气泡室

• DOI: 10.3390/universe9080346
• 发表时间: 2023
• 期刊: Universe
• 影响因子: 2.9
• 作者: Alfonso-Pita, Ernesto;Behnke, Edward;Bressler, Matthew;Broerman, Benjamin;Clark, Kenneth;Corbett, Jonathan;Dahl, C. Eric;Dering, Koby;de St. Croix, Austin;Durnford, Daniel
• 通讯作者: Durnford, Daniel

Enhanced pyroelectric response from domain-engineered lead-free (K0.5Bi0.5TiO3-BaTiO3)-Na0.5Bi0.5TiO3 ferroelectric ceramics

• DOI: 10.1016/j.jeurceramsoc.2020.11.013
• 发表时间: 2020-11
• 期刊: Journal of The European Ceramic Society
• 影响因子: 5.7
• 作者: Atul Thakre;D. Maurya;Do Yoen Kim;Yunseok Kim;P. Sriboriboon;Il-Ryeol Yoo;S. Priya;K. Cho;H. Song;J. Ryu