通过使用结构描述符的多步机器学习来预测2D材料中的负热膨胀
Arko Mohari1, Soumya Mondal1, Debashis Sing Mura1
1School of Chemical Sciences, Indian Association for the Cultivation of Science, Kolkata, West Bengal, India.
Chemistry, an Asian journal
|January 31, 2026
概括
本研究引入了一种机器学习模型,有效地预测2D材料的负热膨胀 (NTE). 该模型准确地识别了194种新的NTE材料,加速了先进的热膨胀材料的发现.
科学领域:
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
- 计算材料科学科学 计算材料科学
背景情况:
- 发现新的负热膨胀 (NTE) 超材料在实验上具有挑战性和计算密集性.
- 预测热膨胀系数 (TEC) 和NTE最大值 (αmax) 对材料设计至关重要.
研究的目的:
- 开发一种机器学习 (ML) 方法,以便在二维材料中有效预测NTE最大值和TEC.
- 快速选大量的2D材料以检测NTE属性.
主要方法:
- 使用了多步骤机器学习 (ML) 模型,将结构和可调节的特征作为输入.
- 预测与使用准和近似 (QHA) 的第一原则计算进行了验证.
- 对来自2DMatPedia数据库的材料进行盲目测试证实了模型的稳定性.
主要成果:
- ML模型显示了预测目标属性的高相关性与QHA计算.
- 在234个被调查的二维材料中,194个被确定为在0-1000K之间展示NTE.
- 确定了影响NTE的关键特征,指导了未来的材料设计.
结论:
- 开发的ML方法提供了一种系统和有效的方法,用于对2D材料进行NTE选.
- 这项工作加速了新型二维NTE材料的发现和设计.
- 识别的特征为为特定的热膨胀行为量身定制材料特性提供了宝贵的见解.
更多相关视频
07:13Comparison of Predictive Performance of Three Lymph Node Staging Systems in Colorectal Signet Ring Cell Carcinoma Based on Machine Learning Model
Published on: April 18, 2025
735
07:15Machine Learning Algorithms for Early Detection of Bone Metastases in an Experimental Rat Model
Published on: August 16, 2020
7.5K
相关概念视频
Thermal Expansion
5.7K
The expansion of alcohol in a thermometer is one of many commonly encountered examples of thermal expansion, which is the change in size or volume of a given system as its temperature changes. The most visible example is the expansion of hot air. When air is heated, it expands and becomes less dense than the surrounding air, which then exerts an upward force on the hot air to, for example, make steam and smoke rise, and hot air balloons float. The same behavior happens in all liquids and gases,...
5.7K
Thermal expansion and Thermal stress: Problem Solving
2.2K
San Francisco's Golden Gate Bridge is exposed to temperatures ranging from -15 °C to 40 °C. At its coldest, the main span of the bridge is 1275 m long. Assuming that the bridge is made entirely of steel, what is the change in its length between these temperatures?
To solve the problem, first, identify the known and unknown quantities. The initial length (L) of the bridge is 1275 m, the coefficient of linear expansion (α) for steel is 12 x 10-6/°C, and the change in temperature (ΔT) is 55...
To solve the problem, first, identify the known and unknown quantities. The initial length (L) of the bridge is 1275 m, the coefficient of linear expansion (α) for steel is 12 x 10-6/°C, and the change in temperature (ΔT) is 55...
2.2K
Predicting Molecular Geometry
45.8K
VSEPR Theory for Determination of Electron Pair Geometries
45.8K
Machines
578
Machines are complex structures consisting of movable, pin-connected multi-force members that work together to transmit forces. One example of a machine is the cutting plier, which is used to cut wires by applying forces to its handles. When equal and opposite forces are exerted on the handles of the cutting plier, they cause the cutting edges to come together and apply equal and opposite reaction forces on the wire, which are greater than the applied forces.
A free-body diagram of the...
A free-body diagram of the...
578
Machines: Problem Solving II
668
Machines are complex structures consisting of movable, pin-connected multi-force members that work together to transmit forces. Consider a lifting tong carrying a 100 kg load. It comprises movable sections DAF and CBG linked together with member AB.
668
Negative Regulator Molecules
38.5K
Positive regulators allow a cell to advance through cell cycle checkpoints. Negative regulators have an equally important role as they terminate a cell’s progression through the cell cycle—or pause it—until the cell meets specific criteria.
38.5K
