Mechanical metamaterials describe a class of composite materials with artificially developed structures, which display extraordinary mechanical residential or commercial properties that conventional products do not have. Amongst them, energy absorption mechanical metamaterials can take in power more effectively, which requires the product itself to equip both high strength and high pressure capacity, which, however, barely co-exist in basic.
Nanolattice is a new class of mechanical metamaterials with particular sizes on the nanoscale. Due to size results, geometrical setup, and material choice, the mechanical properties of this kind of permeable materials are extremely various from those of bulk products. Provided its even much better mechanical properties with lighter weight, nanolattice is anticipated to bring innovative applications in the field of high-performance functional products in the future.
Beam-structured nanolattice is the research study focus of nanolattice metamaterials. Nevertheless, it has actually been so difficult to make metal beam nanolattice with beam size less than 100 nm, and hence its mechanical residential or commercial properties still remain ambiguous.
In this work, based on the Heavy Ion Research Facility at Lanzhou (HIRFL), the researchers produced a brand-new kind of quasi-body focused cubic (quasi-BCC) beam nanolattice mechanical metamaterial with the ion track innovation. The beam size of the quasi-BCC nanolattice can be as little as 34 nm, a record low beam size of mechanical metamaterials.
The scientists showed that gold and copper quasi-BCC beam nanolattices have outstanding energy absorption capacity and compressive strength. The experiments revealed that the energy absorption capacity of the copper quasi-BCC beam nanolattice surpasses that of the formerly 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.
In addition, the scientists revealed that the amazing mechanical residential or commercial properties are primarily due to the synergistic result of size results, quasi-BCC geometry, and great ductility of metals.
This research study sheds light on the mechanical properties of the beam nanolattices, and uses the ion track innovation as a brand-new method for the exploration of beam nanolattice with ultra-high energy absorption capacity.
Recommendation: “Mechanical metamaterials made of freestanding quasi-BCC nanolattices of gold and copper with ultra-high energy absorption capability” by Hongwei Cheng, Xiaoxia Zhu, Xiaowei Cheng, Pengzhan Cai, Jie Liu, Huijun Yao, Ling Zhang and Jinglai Duan, 4 March 2023, Nature Communications.DOI: 10.1038/ s41467-023-36965-4.
The SEM picture of a FIB-milled quasi-BCC beam nanolattice. Credit: Image from IMP
Mechanical Metamaterials Fabricated With Ultra-high Energy Absorption Capacity
Scientists have actually developed a nanolattice metamaterial with ultra-high energy absorption capability using ion track innovation, accomplishing a record low beam size of 34 nm and demonstrating excellent energy absorption and compressive strength.
Chinese researchers have successfully made mechanical metamaterials with ultra-high energy absorption capacity utilizing the ion track technology. The outcomes were published in Nature Communications as Editors Highlights.
The study was performed by researchers from the Materials Research Center of the Institute of Modern Physics (IMP) of the Chinese Academy of Sciences (CAS) and their partners from Chongqing University.
Nanolattice is a new class of mechanical metamaterials with characteristic sizes on the nanoscale. The researchers showed that gold and copper quasi-BCC beam nanolattices have outstanding energy absorption capacity and compressive strength. The experiments revealed that the energy absorption capacity of the copper quasi-BCC beam nanolattice surpasses that of the formerly reported beam nanolattice. The yield strength of the gold and copper quasi-BCC beam nanolattices surpasses that of the matching bulk materials at less than half the density of the latter.