当前位置：
X-MOL 学术
›
Adv. Funct. Mater.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Highly Ordered 2D Open Lattices Through Self-Assembly of Magnetic Units
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2024-09-18 , DOI: 10.1002/adfm.202412326 Xinyan Yang 1 , Junqing Leng 2 , Cheng Sun 2 , Sinan Keten 1, 2
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2024-09-18 , DOI: 10.1002/adfm.202412326 Xinyan Yang 1 , Junqing Leng 2 , Cheng Sun 2 , Sinan Keten 1, 2
Affiliation
|
Fabrication of architected materials through self-assembly of units offers many advantages over monolithic solids including recyclability, reconfigurability, self-healing, and diversity of emergent properties – all prescribed chiefly by the choice of the building blocks. While self-assembly is prevalent in biosynthesis, it remains challenging to recapitulate it macroscopically. Recent success in the self-assembly of 2D ordered open magneto-elastic lattices from centimeter-long bar units with sticky magnetic ends, showcasing graceful failure at “magnetic bonds” and re-assembly under extreme loading. However, it is still unclear how this approach can be generalized to design units that preferably form ordered low-energy structures with desirable mechanical properties such as ductility, auxetics, and impact resistance. Here, diverse ordered 2D lattice structures are predicted as the self-assembly outcomes from units with 2 (bar), 3 (Y-shape), and 4 (cross) branches with magnetic ends. The defect formation is significantly reduced by a computational design approach. Tunable mechanical behavior is shown to be achieved by varying unit shapes and magnet orientations. Cross-shaped units are identified for their promise in auxetic response and penetration resistance with these findings validated through experiments. The work highlights the potential of self-assembling magnetic architected materials for adaptive structures, impact mitigation, and energy adsorption.
中文翻译：
通过磁性单元的自组装实现高度有序的 2D 开放晶格
与整体实体相比，通过单元的自组装制造建筑材料具有许多优势，包括可回收性、可重构性、自我修复和新兴属性的多样性——所有这些都主要由构建块的选择来规定。虽然自组装在生物合成中很普遍，但要从宏观上概括它仍然具有挑战性。最近在从具有粘性磁性末端的厘米长条单元中订购的 2D 有序开磁弹性晶格的自组装取得了成功，展示了“磁键”的优雅失效和在极端负载下的重新组装。然而，目前尚不清楚如何将这种方法推广到设计单元，这些单元最好形成具有所需机械性能（如延展性、增效性和抗冲击性）的有序低能结构。在这里，不同的有序 2D 晶格结构被预测为具有 2 （bar）、3 （Y 形） 和 4 （交叉）的磁端分支的单元的自组装结果。通过计算设计方法，缺陷的形成显著减少。可调的机械行为是通过改变单元形状和磁体方向来实现的。十字形单元因其在生长响应和抗渗透性方面的前景而被确定，这些发现通过实验验证。这项工作突出了自组装磁性建筑材料在自适应结构、减轻冲击和能量吸附方面的潜力。
更新日期：2024-09-18
中文翻译：
通过磁性单元的自组装实现高度有序的 2D 开放晶格
与整体实体相比，通过单元的自组装制造建筑材料具有许多优势，包括可回收性、可重构性、自我修复和新兴属性的多样性——所有这些都主要由构建块的选择来规定。虽然自组装在生物合成中很普遍，但要从宏观上概括它仍然具有挑战性。最近在从具有粘性磁性末端的厘米长条单元中订购的 2D 有序开磁弹性晶格的自组装取得了成功，展示了“磁键”的优雅失效和在极端负载下的重新组装。然而，目前尚不清楚如何将这种方法推广到设计单元，这些单元最好形成具有所需机械性能（如延展性、增效性和抗冲击性）的有序低能结构。在这里，不同的有序 2D 晶格结构被预测为具有 2 （bar）、3 （Y 形） 和 4 （交叉）的磁端分支的单元的自组装结果。通过计算设计方法，缺陷的形成显著减少。可调的机械行为是通过改变单元形状和磁体方向来实现的。十字形单元因其在生长响应和抗渗透性方面的前景而被确定，这些发现通过实验验证。这项工作突出了自组装磁性建筑材料在自适应结构、减轻冲击和能量吸附方面的潜力。
京公网安备 11010802027423号