发表机构
Center for X-Mechanics, Department of Engineering Mechanics, Zhejiang University（浙江大学工程力学系X力学中心）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
研究通过应变工程在材料体中创建拓扑畴壁以产生内部手性通道，该通道对边界无序免疫且位置和限制可编程，在线性梯度应变场下通道宽度有缩放定律，在高陈数相还设计了通道的空间操作，为可编程体拓扑输运等提供途径。
AI 中文摘要
物理边界处积累的无序阻碍了理想零耗散拓扑边缘通道的实现。本文提出一种应变工程机制，在原始材料体中创建拓扑畴壁，从而产生与物理边界空间解耦的内部手性通道。量子输运模拟表明，这些内部通道对严重边界无序具有非凡的免疫力，保持理想的无涡旋输运形态。此外，这些内部通道的空间位置和限制可定量编程。在线性梯度应变场下，通道宽度相对于应变梯度遵循反平方根缩放定律。在高陈数相（|C|=2）中，设计了同向传播手性通道的空间分裂和合并，提出了类似拓扑马赫曾德尔的几何结构。这些结果为可编程体拓扑输运和可重构拓扑电路指明了一条途径。
英文摘要
Topological channels are typically pinned to physical edges or heterogeneous interfaces. Physical edges expose the channels to localized disorder, whereas interface-based designs generally involve material or structural discontinuities. These constraints limit geometric tunability and can compromise microscopic transport quality. Here we show that smooth strain can program topological channels within a single-component homogeneous lattice through a mechanically constrained inverse-design framework. A strain-dependent Dirac mass provides a direct geometric control principle: its zero contour defines the channel path, the contour-crossing topological mismatch fixes the net chirality, and the normal mass gradient sets the confinement width following an inverse-square-root scaling law. Unlike conventional pinned channels, these strain-engineered interior channels permit continuous control over channel geometry and confinement. We demonstrate the approach in a strained Haldane model, realizing straight channels at prescribed orientations, designed curved paths, and multichannel networks associated with higher-Chern-number phases. The resulting channels exhibit quantized transmission and spatial decoupling from boundary-localized disorder, establishing strain as a mechanical design field for programmable interior topological transport.
