时空调制介质中的非互反波传播

Multiscale Model. Simul. Pub Date : 2021-09-15 DOI:10.1137/21m1449427

H. Ammari, Jinghao Cao, Erik Orvehed Hiltunen

{"title":"时空调制介质中的非互反波传播","authors":"H. Ammari, Jinghao Cao, Erik Orvehed Hiltunen","doi":"10.1137/21m1449427","DOIUrl":null,"url":null,"abstract":"We prove the possibility of achieving non-reciprocal wave propagation in space-time modulated media and give an asymptotic analysis of the non-reciprocity property in terms of the amplitude of the time-modulation. Such modulation causes a folding of the band structure of the material, which may induce degenerate points. By breaking time-reversal symmetry, we show that these degeneracies may open into non-symmetric, unidirectional band gaps. Finally we illustrate our results by several numerical simulations.","PeriodicalId":313703,"journal":{"name":"Multiscale Model. Simul.","volume":"15 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2021-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"7","resultStr":"{\"title\":\"NonReciprocal Wave Propagation in Space-Time Modulated Media\",\"authors\":\"H. Ammari, Jinghao Cao, Erik Orvehed Hiltunen\",\"doi\":\"10.1137/21m1449427\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We prove the possibility of achieving non-reciprocal wave propagation in space-time modulated media and give an asymptotic analysis of the non-reciprocity property in terms of the amplitude of the time-modulation. Such modulation causes a folding of the band structure of the material, which may induce degenerate points. By breaking time-reversal symmetry, we show that these degeneracies may open into non-symmetric, unidirectional band gaps. Finally we illustrate our results by several numerical simulations.\",\"PeriodicalId\":313703,\"journal\":{\"name\":\"Multiscale Model. Simul.\",\"volume\":\"15 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2021-09-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"7\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Multiscale Model. Simul.\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1137/21m1449427\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Multiscale Model. Simul.","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1137/21m1449427","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 7

摘要

我们证明了波在时空调制介质中实现非互易传播的可能性，并从时间调制幅度的角度给出了非互易性的渐近分析。这种调制使材料的能带结构发生折叠，从而产生简并点。通过打破时间反转对称性，我们发现这些简并可以打开成非对称的、单向的带隙。最后，通过几个数值模拟来说明我们的结果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

NonReciprocal Wave Propagation in Space-Time Modulated Media

We prove the possibility of achieving non-reciprocal wave propagation in space-time modulated media and give an asymptotic analysis of the non-reciprocity property in terms of the amplitude of the time-modulation. Such modulation causes a folding of the band structure of the material, which may induce degenerate points. By breaking time-reversal symmetry, we show that these degeneracies may open into non-symmetric, unidirectional band gaps. Finally we illustrate our results by several numerical simulations.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Multiscale Model. Simul.

自引率

0.00%

发文量