arXiv:2601.08185cond-mat.mtrl-scics.AI2026-01

AI+机器人自动寻材料,人机协同加速发现新相。

Autonomous Materials Exploration by Integrating Automated Phase Identification and AI-Assisted Human Reasoning

  • 用自动相位识别+人类反馈优化搜索路径。
  • 在Bi-Ti-O体系中找到稳定δ- Bi₂O₃的新制备区间。
  • 适合材料探索、自驱动实验平台研究者。

自主实验有望通过结合人工智能与模块化机器人平台,加速材料开发,探索广阔的化学与工艺组合空间。本工作将相位信息引入SARA科学自主推理代理系统,利用自动化概率相位标注算法,加快目标相区的搜索速度。通过扩展为包含人类反馈的SARA-H框架,提升了推理效率。合成基准测试表明,该AI系统具备高效性,且人类输入显著提升采样效率。在多个氧化物体系(包括Bi₂O₃、SnOₓ和Bi-Ti-O)的薄膜样品上,采用横向梯度激光瞬时退火实现快速合成与非平衡相的动能捕获。在Bi-Ti-O体系中,成功识别出稳定δ-Bi₂O₃和Bi₂Ti₂O₇的广泛工艺区间,揭示了停留时间对三元氧化物相行为的影响,并验证了铋掺杂钛酸盐可抑制亚稳态金红石相向基态的不利转变。所发展的自主方法推动了新材料发现与合成机制理解。

原文摘要 · Abstract (English)

Autonomous experimentation holds the potential to accelerate materials development by combining artificial intelligence (AI) with modular robotic platforms to explore extensive combinatorial chemical and processing spaces. Such self-driving laboratories can not only increase the throughput of repetitive experiments, but also incorporate human domain expertise to drive the search towards user-defined objectives, including improved materials performance metrics. We present an autonomous materials synthesis extension to SARA, the Scientific Autonomous Reasoning Agent, utilizing phase information provided by an automated probabilistic phase labeling algorithm to expedite the search for targeted phase regions. By incorporating human input into an expanded SARA-H (SARA with human-in-the-loop) framework, we enhance the efficiency of the underlying reasoning process. Using synthetic benchmarks, we demonstrate the efficiency of our AI implementation and show that the human input can contribute to significant improvement in sampling efficiency. We conduct experimental active learning campaigns using robotic processing of thin-film samples of several oxide material systems, including Bi$_2$O$_3$, SnO$_x$, and Bi-Ti-O, using lateral-gradient laser spike annealing to synthesize and kinetically trap metastable phases. We showcase the utility of human-in-the-loop autonomous experimentation for the Bi-Ti-O system, where we identify extensive processing domains that stabilize $δ$-Bi$_2$O$_3$ and Bi$_2$Ti$_2$O$_7$, explore dwell-dependent ternary oxide phase behavior, and provide evidence confirming predictions that cationic substitutional doping of TiO$_2$ with Bi inhibits the unfavorable transformation of the metastable anatase to the ground-state rutile phase. The autonomous methods we have developed enable the discovery of new materials and new understanding of materials synthesis and properties.

材料发现自驱动实验人机协同相变调控

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