利用纳米特征进行声子衍射和干扰

IF 2.7 3区 物理与天体物理 Q2 PHYSICS, APPLIED Journal of Applied Physics Pub Date : 2024-01-04 DOI:10.1063/5.0179369
Paul Desmarchelier, Efstratios Nikidis, Roman Anufriev, Anne Tanguy, Yoshiaki Nakamura, Joseph Kioseoglou, Konstantinos Termentzidis
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引用次数: 0

摘要

利用分子动力学模拟,在含有晶体硅和纳米障碍物(如空隙或无定形夹杂物)的系统中观察到了原子尺度的声子衍射和干涉模式。这些与声子波长相同尺度的纳米结构系统所产生的衍射图样与简单的菲涅尔-基尔霍夫积分法所预测的衍射图样相似。两种方法之间的微小差异归因于界面的性质和晶体硅的各向异性。基于声子的波描述,这些发现可以让人们深入了解声子与纳米物体的相互作用,并可应用于智能热能管理。
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Phonon diffraction and interference using nanometric features
Phonon diffraction and interference patterns are observed at the atomic scale, using molecular dynamics simulations in systems containing crystalline silicon and nanometric obstacles, such as voids or amorphous inclusions. The diffraction patterns due to these nano-architectured systems of the same scale as the phonon wavelengths are similar to the ones predicted by the simple Fresnel–Kirchhoff integral. The few differences between the two approaches are attributed to the nature of the interface and the anisotropy of crystalline silicon. Based on the wave description of phonons, these findings can provide insights into the interaction of phonons with nano-objects and can have applications in smart thermal energy management.
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来源期刊
Journal of Applied Physics
Journal of Applied Physics 物理-物理:应用
CiteScore
5.40
自引率
9.40%
发文量
1534
审稿时长
2.3 months
期刊介绍: The Journal of Applied Physics (JAP) is an influential international journal publishing significant new experimental and theoretical results of applied physics research. Topics covered in JAP are diverse and reflect the most current applied physics research, including: Dielectrics, ferroelectrics, and multiferroics- Electrical discharges, plasmas, and plasma-surface interactions- Emerging, interdisciplinary, and other fields of applied physics- Magnetism, spintronics, and superconductivity- Organic-Inorganic systems, including organic electronics- Photonics, plasmonics, photovoltaics, lasers, optical materials, and phenomena- Physics of devices and sensors- Physics of materials, including electrical, thermal, mechanical and other properties- Physics of matter under extreme conditions- Physics of nanoscale and low-dimensional systems, including atomic and quantum phenomena- Physics of semiconductors- Soft matter, fluids, and biophysics- Thin films, interfaces, and surfaces
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