CAREER: New Polarizations of Elastic Waves in Architected Materials

职业：建筑材料中弹性波的新极化

• 批准号: 2341003
• 负责人: Pai Wang
• 金额: $ 66.29万
• 依托单位: University of Utah
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2024
• 资助国家: 美国
• 起止时间: 2024-04-01 至 2029-03-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2341003&HistoricalAwards=false
• 关键词: CAREER; New; Polarizations; Elastic; Waves

This Faculty Early Career Development (CAREER) grant will fund research that enables the design of dynamic systems to sustain targeted functionalities such as vibration mitigation, ultrasonic imaging, and thermal phononic manipulation, thereby promoting the progress of science, and advancing national prosperity and welfare. The project will build the analytical, computational, and experimental foundations for the knowledge associated with three novel polarizations of elastic waves: non-paraxial spins, tensorial plane waves, and knotted modes via a new family of architected mechanical metamaterials. These are brand-new wave polarizations that so far cannot exist in any materials, natural or man-made. These next-generation metamaterials are expected to have strong societal impacts, such as saving human lives, buildings, and bridges during earthquakes, as well as saving billions of dollars of medical costs via accurate diagnostics. This CAREER project integrates research and education to form innovative strategies for knowledge dissemination that showcase the societal benefits of the field of wave mechanics and metamaterials and spark interest among Native American students to pursue studies and careers in science and engineering.This research aims to exploit the unique possibilities inherent in mechanical metamaterials to realize wave phenomena that transcend the boundaries defined by the current scientific knowledge. These new metamaterials will support exotic polarizations that are not yet predicted by any theory or observed in any experiment. Specific targets include intrinsic spin angular momentum that is not paraxial to the propagation direction, tensorially polarized elastic plane waves that are analogous to the gravitational waves, and propagation of multi-frequency waves with generalized polarizations that are specified by mathematical knots. The overall goal is to find new horizons in metamaterials research while significantly expanding our tool sets in wave manipulation. This research has the potential to enable the complete and detailed tailoring of the mechanical/phononic transfer of information and energy. The expected outcomes will seed and fertilize a new research field of unconventional wave polarizations.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.

该学院早期职业发展（CAREER）补助金将资助研究，使动态系统的设计能够维持有针对性的功能，如振动缓解，超声成像和热声子操纵，从而促进科学的进步，促进国家繁荣和福利。该项目将建立与弹性波的三种新型偏振相关的知识的分析，计算和实验基础：非傍轴自旋，张量平面波和打结模式，通过一个新的建筑机械超材料家族。这是一种全新的波偏振，迄今为止还不存在于任何材料中，无论是天然的还是人造的。这些下一代超材料预计将产生强大的社会影响，例如在地震期间拯救人类生命，建筑物和桥梁，以及通过准确的诊断节省数十亿美元的医疗费用。该项目将研究和教育相结合，形成知识传播的创新策略，展示波动力学和超材料领域的社会效益，并激发美国原住民学生对科学和工程领域的学习和职业兴趣。该研究旨在利用机械超材料固有的独特可能性，实现超越当前边界的波动现象。科学知识。这些新的超材料将支持尚未被任何理论预测或在任何实验中观察到的奇异偏振。具体的目标包括不与传播方向近轴的固有自旋角动量，类似于引力波的张量极化弹性平面波，以及具有由数学结指定的广义极化的多频波的传播。总体目标是在超材料研究中找到新的视野，同时显着扩展我们在波操纵方面的工具集。这项研究有可能使信息和能量的机械/声子转移的完整和详细的定制。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。