一个物理规则来设计无周期宽度调制波导,以贝叶斯优化进行最小的声子传输
Antonios-Dimitrios Stefanou1, Xanthippi Zianni1
1Department of Aerospace Science and Technology, National and Kapodistrian University of Athens, Psachna, Evia, Greece. xzianni@uoa.gr.
Nanoscale
|August 29, 2023
概括
与周期结构相比,无周期纳米波导 (nWVGs) 提供了优越的热传导控制. 在nWVGs中最大的障碍导致最小的热导电量,从而实现更好的纳米级热管理.
科学领域:
- 纳米规模的科学和工程.
- 凝聚物质物理学 凝聚物质物理学
- 材料科学是一种材料科学.
背景情况:
- 无周期纳米波导 (nWVGs) 和超级格子 (SLs) 在限制声子传输和热传导方面比周期结构更有效.
- 这些结构可以减轻寄生热传导,这对于纳米级热管理和能量转换至关重要.
研究的目的:
- 为了研究宽度调制的nWVGs中最大混乱的最佳无周期性.
- 为了证实物理原理,即最大扰乱最小化了这些系统中的热导电.
主要方法:
- 通过减少复杂性来开发可行的优化问题.
- 应用高效的贝叶斯优化技术.
- 通过非相同调制单元的数量来量化混乱的量化.
主要成果:
- 在宽度调制的nWVGs中,最佳的无周期性被发现与最大的失序相对应.
- 结果证实了物理规则,即最无序的数组实现了最小的导热.
- 疾病的程度得到了有效的量化.
结论:
- 可以设计几何无周期性来控制超材料中的传输特性.
- 这项研究为设计无周期性结构提供了一条路线,以提高纳米级的热管理.
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