CAREER: Phononic Crystals: Theory and Practical Implementations

职业：声子晶体：理论与实际实现

• 批准号: 1056077
• 负责人: Zayd Leseman
• 金额: $ 41万
• 依托单位: University of New Mexico
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-08-01 至 2016-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1056077&HistoricalAwards=false
• 关键词: CAREER; Phononic; Crystals; Theory; Practical

The research objective of this Faculty Early Career Development (CAREER) award is to develop methods for modeling Phononic Crystals (PnCs) and to characterize them experimentally. PnCs are a type of micro/nanostructure that are capable of manipulating the manner by which elastic waves travel through a material by a periodic patterning of a material's geometry. Computer simulations will be used to model the behavior of the PnCs. These simulations will then guide the design, fabrication and experimental characterization of the PnCs. Deliverables include analytical and computational tools for PnCs, theoretical and experimental results demonstrating how elastic waves move through PnCs, demonstration of how PnCs alter the thermal conductivity of a material, documentation of results, engineering student education, and engineering research experience for students from underrepresented groups.Results from this research will lead to a wide range of technological advances in the areas of signal processing and thermo-electric devices. Because the inherent geometry of PnCs give them their ability to process elastic waves (signals) these types of devices will be in a position to replace traditional digital signal processing techniques which consume relatively large amount of power in comparison to PnCs. Additionally, by manipulating phonons in materials more efficient thermoelectric devices can also be constructed that can be practically used for thermal harvesting of energy. Graduate and undergraduate students will participate in this research as well as students from a local community college that serves only Native Americans. Course material will also be developed as a part of this award that will address the different modes of energy transport in materials and the interplay between them.

本学院早期职业发展（Career）奖的研究目标是开发声子晶体（pnc）建模方法并通过实验对其进行表征。pnc是一种微/纳米结构，能够通过材料几何形状的周期性图案来操纵弹性波通过材料的方式。计算机模拟将用于模拟pnc的行为。这些模拟将指导pnc的设计、制造和实验表征。可交付成果包括pnc的分析和计算工具，展示弹性波如何通过pnc的理论和实验结果，pnc如何改变材料的导热性的演示，结果文档，工程学生教育以及来自代表性不足群体的学生的工程研究经验。这项研究的结果将导致信号处理和热电器件领域的广泛技术进步。由于pnc固有的几何形状赋予了它们处理弹性波（信号）的能力，这些类型的设备将取代传统的数字信号处理技术，与pnc相比，传统的数字信号处理技术消耗相对大量的功率。此外，通过控制材料中的声子，也可以构建更有效的热电装置，可以实际用于能量的热收集。研究生和本科生将参与这项研究，以及来自当地社区学院的学生，该学院仅为印第安人提供服务。作为该奖项的一部分，课程材料也将被开发，这些材料将涉及材料中能量传输的不同模式以及它们之间的相互作用。