Polymer Genome: A Data-Powered Polymer Informatics Platform for Property Predictions

材料信息学 财产(哲学) 计算机科学 聚合物 集合(抽象数据类型) 表征(材料科学) 信息学 材料科学 纳米技术 工程类 健康信息学 工程信息学 医学 哲学 护理部 认识论 复合材料 程序设计语言 公共卫生 电气工程
作者
Chiho Kim,Anand Chandrasekaran,Tran Doan Huan,Deya Das,Rampi Ramprasad
出处
期刊:Journal of Physical Chemistry C [American Chemical Society]
卷期号:122 (31): 17575-17585 被引量:367
标识
DOI:10.1021/acs.jpcc.8b02913
摘要

The recent successes of the Materials Genome Initiative have opened up new opportunities for data-centric informatics approaches in several subfields of materials research, including in polymer science and engineering. Polymers, being inexpensive and possessing a broad range of tunable properties, are widespread in many technological applications. The vast chemical and morphological complexity of polymers though gives rise to challenges in the rational discovery of new materials for specific applications. The nascent field of polymer informatics seeks to provide tools and pathways for accelerated property prediction (and materials design) via surrogate machine learning models built on reliable past data. We have carefully accumulated a data set of organic polymers whose properties were obtained either computationally (bandgap, dielectric constant, refractive index, and atomization energy) or experimentally (glass transition temperature, solubility parameter, and density). A fingerprinting scheme that captures atomistic to morphological structural features was developed to numerically represent the polymers. Machine learning models were then trained by mapping the fingerprints (or features) to properties. Once developed, these models can rapidly predict properties of new polymers (within the same chemical class as the parent data set) and can also provide uncertainties underlying the predictions. Since different properties depend on different length-scale features, the prediction models were built on an optimized set of features for each individual property. Furthermore, these models are incorporated in a user-friendly online platform named Polymer Genome (www.polymergenome.org). Systematic and progressive expansion of both chemical and property spaces are planned to extend the applicability of Polymer Genome to a wide range of technological domains.
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