论文标题
软材料设计的逆方法
Inverse methods for design of soft materials
论文作者
论文摘要
功能性软材料,包括胶体和分子构建块,它们由于其可调相互作用而自组织为复杂的结构,从而实现了广泛的技术应用。逆方法提供了系统的手段,用于导航其固有的高维设计空间,以创建具有目标属性的材料。尽管在计算机中已成功实施了多种出于身体动机的逆策略,但迄今为止,它们转化为指导实验材料发现的转化仅限于少数概念验证研究。从这个角度来看,我们讨论了解决两个挑战的软材料的反相反方法的最新进展:(1)阻止此类方法满足设计限制的方法学限制以及(2)限制可以解决系统的大小和复杂性的计算挑战。证明利用机器学习的策略特别有效,包括发现订单参数的方法,这些参数表征了复杂的结构基序和方案,以从基础结构中有效地计算宏观特性。我们还强调了提高设计材料的实验可实现性的有希望的机会,包括在多个热力学状态下发现具有功能的材料,在实验中易于实施的外部定向装配方案的设计以及提高实验相关模型的准确性和计算效率的策略。
Functional soft materials, comprising colloidal and molecular building blocks that self-organize into complex structures as a result of their tunable interactions, enable a wide array of technological applications. Inverse methods provide systematic means for navigating their inherently high-dimensional design spaces to create materials with targeted properties. While multiple physically motivated inverse strategies have been successfully implemented in silico, their translation to guiding experimental materials discovery has thus far been limited to a handful of proof-of-concept studies. In this Perspective, we discuss recent advances in inverse methods for design of soft materials that address two challenges: (1) methodological limitations that prevent such approaches from satisfying design constraints and (2) computational challenges that limit the size and complexity of systems that can be addressed. Strategies that leverage machine learning have proven particularly effective, including methods to discover order parameters that characterize complex structural motifs and schemes to efficiently compute macroscopic properties from the underlying structure. We also highlight promising opportunities to improve the experimental realizability of materials designed computationally, including discovery of materials with functionality at multiple thermodynamic states, design of externally directed assembly protocols that are simple to implement in experiments, and strategies to improve the accuracy and computational efficiency of experimentally relevant models.