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説明:

“Fifth-generation-and-beyond” communication technologies have sparked considerable demand for polymer composite materials with low coefficients of thermal expansion (CTE) and low dielectric loss at high operation frequencies. However, the complexity of process parameters and the lack of knowledge about fabrication procedures hinder this goal. In this study, state-of-the-art experiment-in-loop Bayesian optimization (EiL-BO) was developed to optimize a composite of a perfluoroalkoxyalkane matrix with silica fillers. The Gaussian process equipped with an automatic relevance determination kernel that automatically adjusts the scaling parameters of individual dimensions effectively enhances EiL-BO's ability to search for candidates in a complex and anisotropic multidimensional space. This addresses the critical challenge of handling problems with high-dimensional parameters and is capable of managing eight-dimensional parameters, including filler morphology, surface chemistry, and compounding process parameters. The obtained optimal composite shows a low CTE of 24.7 ppm K−1 and an extinction coefficient of 9.5 × 10−4, outperforming the existing polymeric composite, revealing exceptionally effective and versatile EiL-BO that accelerates the development of advanced materials.

権利情報:

• cc-by-nc-3.0
  

キーワード: polymer composite, Experiment-in-loop interactive optimization

刊行年月日: 2025-02-21

出版者: Royal Society of Chemistry (RSC)

掲載誌:

• Materials Horizons (ISSN: 20516347) vol. 12 issue. 10 p. 3332-3340

研究助成金:

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1039/d4mh01606h

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更新時刻: 2025-05-23 08:30:21 +0900

MDRでの公開時刻: 2025-05-22 16:32:06 +0900