CAREER: Strain effects on photonic device properties across length scales

光子器件对下一代信息和电信技术的发展至关重要。在器件的加工和使用过程中产生的机械应变对功能特性有广泛的影响，从原子尺度到连续介质尺度。这个职业计划将开发耦合的力学、物理和材料模型来解决这些多尺度现象。计算和分析方法将用于研究以下问题：(I)光电材料中缺陷和界面应变对电子结构的影响，(Ii)自组装量子点阵列中的失配应变效应，以及(Iii)薄膜、自由支撑型光学MEMS器件中的工艺应变感生曲率。这项研究计划将得到一个全面的教育计划的补充，目标是激励学生学习微观和纳米力学。作为工程学院工程入门系列课程的一部分，将开设一门新生级别的纳米力学迷你课程。将为对微观和纳米力学感兴趣的各级学生组织一个期刊俱乐部。材料研究学会将成立一个学生分会，允许学生利用大学靠近每年在波士顿举行的秋季年会的优势。*

Photonic devices are critical to the development of next generation information and telecommunications technologies. Mechanical strain induced in processing and service of the devices has wide ranging effects on functional properties from the atomic scale up to the continuum scale. This CAREER program will develop coupled mechanics, physics, and materials models to address these multiscale phenomena. Computational and analytical methods will be used to study the following problems: (i) defect and interfacial strain effects on electronic structure in optoelectronic materials, (ii) mismatch strain effects in arrays of self-assembled quantum dots, and (iii) process strain-induced curvature in thin, free standing optical MEMS devices. The research program will be complemented by a comprehensive educational plan, with the goal of motivating students to study micro- and nanomechanics. A freshman level mini-course in nanomechanics will be instituted as part of the Intro to Engineering series in the College of Engineering. A journal club for students of all levels interested in micro- and nanomechanics will be organized. A student chapter of the Materials Research Society will be founded and will allow students to take advantage of the proximity of the University to the fall annual meeting held each year in Boston.***