Vibrational band structure of nanoscale phononic crystals
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE(2016)
摘要
The vibrational properties of two-dimensional phononic crystals are studied with large-scale molecular dynamics simulations and finite element method calculation. The vibrational band structure derived from the molecular dynamics simulations shows the existence of partial acoustic band gaps along the Gamma-M direction. The band structure is in excellent agreement with the results from the finite element model, proving that molecular dynamics simulations can be used to study the vibrational properties of such complex systems. An analysis of the structure of the vibrational modes reveals how the acoustic modes deviate from the homogeneous bulk behavior for shorter wavelengths and hints toward a decoupling of vibrations in the phononic crystal. (C) 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
更多查看译文
关键词
finite element method,lattice vibrations,molecular dynamics simulations,phononic crystals
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要