Monolayer borophene, a two-dimensional nanostructure, has received much attention due to its high flexibility, excellent elasticity, high strength, and interesting electronic characteristics. However, borophene is highly anisotropic, and therefore programming their anisotropic thermo-mechanical properties is of great interest for a wide range of applications in electronic devices, ion batteries, hydrogen storages, and supercapacitors. To determine the impact of porosity and pore topology on thermo-mechanical properties of porous borophene, non-equilibrium molecular dynamics simulation and finite element approach are adopted. It is found that pore engineering not only effectively controls the thermo-mechanical properties of borophenes but also can offer a strategy to transform an anisotropic borophene to a square quasi-isotropic one. It is shown that the lattice thermal conductivity and mechanical properties along armchair and zigzag directions of monolayer borophenes can be tuned and equalized by changing the pore nanoarchitecture. This work unveils the potential of pore engineering in multiple length scales for tuning the anisotropic thermo-mechanical properties of monolayer borophenes and 2D nanomaterials, such as phosphorene, to develop nanodevices with a desired multifunctional performance.

二维纳米结构的单层硼苯由于其高柔韧性，出色的弹性，高强度和有趣的电子特性而备受关注。然而，硼烷是高度各向异性的，因此，编程它们的各向异性热机械性能引起了电子设备，离子电池，氢存储和超级电容器的广泛应用的极大兴趣。为了确定孔隙度和孔隙拓扑结构对多孔硼苯的热机械性能的影响，采用了非平衡分子动力学模拟和有限元方法。发现孔隙工程不仅有效地控制了硼烷的热机械性质，而且可以提供一种将各向异性的硼烷转变为方形准各向同性的策略。结果表明，通过改变孔纳米结构，可以调节和均衡单层硼苯沿扶手椅和曲折方向的晶格热导率和力学性能。这项工作揭示了在多个长度尺度上进行孔隙工程改造的潜力，这些潜力可用于调节单层硼苯和2D纳米材料（例如磷烯）的各向异性热机械性能，从而开发出具有所需多功能性能的纳米器件。