文献类型：期刊文献

英文题名：Dynamic Geometric Phase Mechanism for Multi-mode Guided Wave Manipulation

作者：Sun, Chaoyu[1];Song, Ailing[1,2];Peng, Siyuan[1];Xiang, Yanxun[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai Key Lab Intelligent Sensing & Detect Tech, Shanghai 200237, Peoples R China;[2]Shanghai Inst Aircraft Mech & Control, Shanghai 200092, Peoples R China

年份：2025

卷号：288

外文期刊名：INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES

收录：;EI(收录号：20250817893726);WOS:【SCI-EXPANDED(收录号:WOS:001433860000001)】；

基金：Acknowledgments This work was supported by the National Natural Science Foundation of China (Grant Nos. 12327807, 12374435, 12025403) , the Basic Research Program of Shanghai Science and Technology Innovation Ac-tion Plan (No. 23JC1401600) , the Shanghai Gaofeng Project for Uni-versity Academic Program Development.

语种：英文

外文关键词：Elastic metastructure; Mode conversion; Continuous phase modulation; Anomalous refraction; Beam splitting; Focusing

摘要：This paper proposes an efficient realization method for multi-mode guided wave manipulation based on the dynamic geometric phase mechanism. The properties of the elastic elements capable of generating mode conversion are first discussed and a geometric structure is designed according to the properties. Then the genetic algorithm and simplex method are used to optimize the geometric structure of the independent unit to achieve perfect mode conversion. The theoretical analysis has proved that dynamic phase and geometric phase mechanisms can realize the phase modulation 0-2 pi for any mode. The multi-mode guided wave manipulation including anomalous refraction, beam splitting, and focusing is numerically and experimentally achieved by the mode-converting meta-cell with arbitrary input and output mode waves. This work solves the multi-mode manipulation problem in the guided wave system, which may provide a new solution for precisely engineering elastic waveform manipulation.