Graphene-based phononic crystal lenses: Machine learning-assisted analysis and design

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@Article{GUO:2024:ultras,

• author = "Liangteng Guo and Shaoyu Zhao and Jie Yang and Sritawat Kitipornchai",
• title = "Graphene-based phononic crystal lenses: Machine learning-assisted analysis and design",
• journal = "Ultrasonics",
• volume = "138",
• pages = "107220",
• year = "2024",
• ISSN = "0041-624X",
• DOI = "doi:10.1016/j.ultras.2023.107220",
• URL = "https://www.sciencedirect.com/science/article/pii/S0041624X23002962",
• keywords = "genetic algorithms, genetic programming, Phononic crystal, Gradient index lens, Machine learning, Graphene-based composites, Inverse design",
• abstract = "The advance of artificial intelligence and graphene-based composites brings new vitality into the conventional design of acoustic lenses which suffers from high computation cost and difficulties in achieving precise desired refractive indices. This paper presents an efficient and accurate design methodology for graphene-based gradient-index phononic crystal (GGPC) lenses by combing theoretical formulations and machine learning methods. The GGPC lenses consist of two-dimensional phononic crystals possessing square unit cells with graphene-based composite inclusions. The plane wave expansion method is exploited to obtain the dispersion relations of elastic waves in the structures and then establish the data sets of the effective refractive indices in structures with different volume fractions of graphene fillers in composite materials and filling fractions of inclusions. Based on the database established by the theoretical formulation, genetic programming, a superior machine learning algorithm, is introduced to generate explicit mathematical expressions to predict the effective refractive indices under different structural information. The design of GGPC lenses is conducted with the assistance of the machine learning prediction model, and it will be illustrated by several typical design examples. The proposed design method offers high efficiency, accuracy as well as the ability to achieve inverse design of GGPC lenses, thus significantly facilitating the development of novel phononic crystal lenses and acoustic energy focusing",

}

Genetic Programming entries for Liangteng Guo Shaoyu Zhao Jie Yang Sritawat Kitipornchai

Citations