Spectroscopic characterization of multishell micro- and nanoarchitectures for nanophononics

在用应变驱动卷起技术制造的复杂三维半导体结构中，降维与非平凡几何和拓扑的杂交是新声子物理的丰富来源。该项目致力于布里渊-曼德尔斯塔姆散射(BMS)的理论建模和用于表征新型卷曲微纳米结构的实验BMS平台的验证。IIN的支持者在各自的微纳米结构领域拥有公认的互补专业知识：理论分析(基于弹性动力学理论和晶格动力学数值方法的低维结构中的声子谱理论)、高科技制造(应变驱动卷起技术)和光学表征。加州大学河滨分校声子优化工程材料合作中心(POEM)的经验将对推动在德累斯顿IIN建立BMS实验平台起到重要和帮助作用。对获得的声子谱的验证和解释将通过比较德累斯顿IIN研究所和基希那乌摩尔多瓦国立大学(MSU)小组进行的计算来进行，继续他们的长期合作。他们的研究努力的协同作用将是本项目成功的基石，该项目旨在深入了解先进微纳结构中的声子辅助现象，并开发一种有效的表征工具。本项目的主要目标与纳米声学基础科学和应用范围的共同进步具有重大相关性。

Hybridization of reduced dimensionality with nontrivial geometry and topology in complex tree-dimensional semiconductor structures fabricated using the strain-driven roll-up technology is a rich source of new phonon physics. The project is devoted to theoretical modeling of the Brillouin-Mandelstam scattering (BMS) and validation of an experimental BMS platform for characterization of novel rolled-up micro- and nanoarchitectures.The proponents at the IIN, IFW Dresden possess recognized complementary expertise in their respective fields of micro- and nanoarchitectures: theoretical analysis (theory of phonon spectra in low-dimensional structures based on the elastodynamic theory and the Lattice Dynamics numerical approach), high-tech fabrication (strain-driven roll-up technology) and optical characterization. The experience available at the cooperating Phonon Optimized Engineered Materials Center (POEM), UC-Riverside will be important and helpful to boost establishing the BMS experimental platform at the IIN, IFW Dresden. Verification and interpretation of the obtained phonon spectra will be performed by comparing the calculations conducted at the IIN, IFW Dresden and in the group at the Moldova State University (MSU), Chisinau in continuation of their long-standing cooperation.A synergy of their research efforts will be the cornerstone for the success of the present project aimed at getting insight in the phonon-assisted phenomena in advanced micro- and nanoarchitectures and developing an effective tool of their characterization. The key goals of the present project are of major relevance to the combined advancements of both fundamental science and applicative scope of nanophononics.