Renjie Li , Yanze Gao , Weijie Liu , Tongtong An , Hongcheng Pan , Yuan Mu , Xujin Yuan
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引用次数: 0
Abstract
The photo-thermo-acoustic (PTA) effect of a three-layer composite material whose surface is fabricated with many periodic micro-nano structures (PMNS) is investigated in this paper. The material is composed of a silicon substrate, a thermal insulation layer of polyimide, and a light-absorbing layer of aluminum nanoaggregates. We propose a method for analyzing the PTA effect based on the idea of finite element meshing. The PTA conversion processes including the photo-thermal conversion and the thermal-acoustic conversion are quantitatively simulated. The influence of the geometric parameters of the PMNS on the intensity and space distribution of the sound field is analyzed both by simulation and experiment. The results show that fabricating PMNS on composite materials can significantly enhance the PTA effect. And the finite element analyzing method proposed in this paper can correctly describe and predict the PTA effect of composite materials with two-dimensional PMNS. It is also applicable for analyzing the PTA effects of other similar materials or structures.
期刊介绍:
This journal establishes a dedicated channel for physicists, material scientists, chemists, engineers and computer scientists who are interested in photonics and nanostructures, and especially in research related to photonic crystals, photonic band gaps and metamaterials. The Journal sheds light on the latest developments in this growing field of science that will see the emergence of faster telecommunications and ultimately computers that use light instead of electrons to connect components.