/PRCWT/Guangzhou, April 24, 2023——Chinese researchers have successfully fabricated mechanical metamaterials with ultra-high energy absorption capacity using ion track technology. The results were published in Nature Communications as an Editor's Highlight.中国研究人员成功制造了机械超材料 具有超高的能量吸收能力，采用离子跟踪技术。该 结果发表在Nature Communications上，作为编辑的亮点。
The study was conducted by the researchers from the Materials Research Center of the Institute of Modern Physics (IMP) of the Chinese Academy of Sciences (CAS) and their collaborators from Chongqing University.这项研究是由材料研究中心的研究人员进行的 中国科学院近代物理研究所 (CAS)和他们来自重庆大学的合作者。
Mechanical metamaterials refer to a class of composite materials with artificially designed structures, which exhibit extraordinary mechanical properties that traditional materials do not have. Among them, energy absorption mechanical metamaterials can absorb mechanical energy more efficiently, which requires the material itself to equip both high strength and high strain capacity, which, however, hardly co-exist in general.机械超材料是指一类具有 人工设计的结构，它表现出非凡的机械性能 传统材料所不具备的性能。其中，能量吸收 机械超材料可以更有效地吸收机械能， 要求材料本身具有高强度和高应变 能力，然而，这在一般情况下几乎不共存。
Nanolattice is a new class of mechanical metamaterials with characteristic sizes on the nanoscale. Due to size effects, geometrical configuration, and material selection, the mechanical properties of this type of porous materials are very different from those of bulk materials. Given its even better mechanical properties with lighter weight, nanolattice is expected to bring revolutionary applications in the field of high-performance functional materials in the future.纳米晶格是一类新型的机械超材料，具有独特的性能 纳米级的大小。由于尺寸效应、几何构型和 材料的选择，这类多孔材料的力学性能 与散装材料的那些非常不同。鉴于其更好的 机械性能与重量更轻，纳米晶格有望带来 在高性能功能材料领域的革命性应用 在未来。
Beam-structured nanolattice is the research focus of nanolattice metamaterials. However, it has been challenging to fabricate metallic beam nanolattice with beam diameter less than 100 nm, so its mechanical properties still remain ambiguous.束结构纳米晶格是纳米晶格的研究热点 超材料然而，金属梁的制备一直是一个挑战 纳米晶格与光束直径小于100纳米，所以它的机械性能 仍然模棱两可。
In this work, based on the Heavy Ion Research Facility at Lanzhou (HIRFL), the researchers fabricated a new type of quasi-body centered cubic (quasi-BCC) beam nanolattice mechanical metamaterial with ion track technology. The beam diameter of the quasi-BCC nanolattice can be as small as 34 nm, a record low beam diameter of mechanical metamaterials.本文以兰州重离子加速器（HIRFL）为基础， 研究人员制造了一种新型的准体心立方晶体 束纳米晶格机械超材料与离子轨道技术。该梁 准BCC纳米晶格的直径可以小至34nm，创纪录低 机械超材料的光束直径。
Additionally, the researchers demonstrated that gold and copper quasi-BCC beam nanolattices have excellent energy absorption capacity and compressive strength. The experiments showed that the energy absorption capacity of the copper quasi-BCC beam nanolattice exceeds that of the previously reported beam nanolattice. The yield strength of the gold and copper quasi-BCC beam nanolattices exceeds that of the corresponding bulk materials at less than half the density of the latter.此外，研究人员证明，金和铜的准BCC 梁纳米晶格具有优异的能量吸收能力和压缩性能 力量实验表明，复合材料的能量吸收能力较好 铜准BCC梁纳米晶格超过了以前报道的梁 纳米晶格金、铜准体心立方梁的屈服强度 纳米晶格超过了相应的大块材料的不到一半 后者的密度。
Furthermore, the researchers revealed that the extraordinary mechanical properties are mainly due to the synergistic effect of size effects, quasi-BCC geometry, and good ductility of metals.此外，研究人员还发现，这种非凡的机械 性能主要是由于尺寸效应的协同作用，准BCC 几何形状和金属的良好延展性。
This study sheds light on the mechanical properties of the beam nanolattices, and applies ion track technology as a new method for the exploration of beam nanolattice with ultra-high energy absorption capacity.这项研究揭示了梁纳米晶格的机械性能， 并将离子径迹技术作为束流探测的新方法 具有超高能量吸收能力的纳米晶格。
