AMShortcut高效生成非晶材料结构,一次训练可适配多种性能需求。
AMShortcut: An Inference- and Training-Efficient Inverse Design Model for Amorphous Materials
- 基于概率生成模型,仅需少量采样步骤即可精准还原短程与中程结构
- 单次训练支持任意组合性能条件的推理,避免重复训练
- 适用于能源存储、热管理等领域的非晶材料逆向设计
非晶材料缺乏长程原子有序性,但具有复杂的短程和中程结构。与仅需数百原子的晶体材料不同,非晶材料模拟通常需要包含数百甚至上千原子的大尺度体系。本文提出AMShortcut,一种面向非晶材料的高效概率生成模型,用于在给定目标性能条件下逆向设计原子位置与元素分布。该模型可在极少数采样步骤内实现对非晶材料短程与中程结构的准确推断,显著提升推理效率;同时仅需一次训练即可支持任意组合性能条件下的推理,无需为每种性能组合单独建模。在三个涵盖多样化结构与性能的非晶材料数据集上的实验表明,AMShortcut有效达成其设计目标。
原文摘要 · Abstract (English)
Amorphous materials are solids that lack long-range atomic order but possess complex short- and medium-range order. Unlike crystalline materials that can be described by unit cells containing few up to hundreds of atoms, amorphous materials require larger simulation cells with at least hundreds or often thousands of atoms. Inverse design of amorphous materials with probabilistic generative models aims to generate the atomic positions and elements of amorphous materials given a set of desired properties. It has emerged as a promising approach for facilitating the application of amorphous materials in domains such as energy storage and thermal management. In this paper, we introduce AMShortcut, an inference- and training-efficient probabilistic generative model for amorphous materials. AMShortcut enables accurate inference of diverse short- and medium-range structures in amorphous materials with only a few sampling steps, mitigating the need for an excessive number of sampling steps that hinders inference efficiency. AMShortcut can be trained once with all relevant properties and perform inference conditioned on arbitrary combinations of desired properties, mitigating the need for training one model for each combination. Experiments on three amorphous materials datasets with diverse structures and properties demonstrate that AMShortcut achieves its design goals.
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