Three-Dimensional High-Entropy Alloy-Polymer Composite Nanolattices That Overcome the Strength-Recoverability Trade-off

doi:10.1021/acs.nanolett.8b01241

IMR OpenIR

	Three-Dimensional High-Entropy Alloy-Polymer Composite Nanolattices That Overcome the Strength-Recoverability Trade-off
	Zhang, Xuan 1; Yao, Jiahao 2; Liu, Bin 1; Yang, Jun 3; Lu, Lei 2; Li, Yi 2; Gao, Huajian 4; Li, Xiaoyan 1
通讯作者	Yao, Jiahao(jhyao@imr.ac.cn) ; Li, Yi(liyi@imr.ac.cn) ; Gao, Huajian(huajian_gao@brown.edu) ; Li, Xiaoyan(xiaoyanlithu@tsinghua.edu.cn)
	2018-07-01
发表期刊	NANO LETTERS
ISSN	1530-6984
卷号	18 期号:7 页码:4247-4256
摘要	Mechanical metamaterials with three-dimensional micro- and nanoarchitectures exhibit unique mechanical properties, such as high specific modulus, specific strength, and energy absorption. However, a conflict exists between strength and recoverability in nearly all the mechanical metamaterials reported recently, in particular the architected micro/nanolattices, which restricts the applications of these materials in energy storage/absorption and mechanical actuation. Here, we demonstrated the fabrication of three-dimensional architected composite nanolattices that overcome the strength-recoverability trade-off. The nanolattices under study are made up of a high-entropy alloy-coated (14.2-126.1 nm in thickness) polymer strut (approximately 260 nm in the characteristic size) fabricated via two-photon lithography and magnetron sputtering deposition. In situ uniaxial compression inside a scanning electron microscope showed that these composite nanolattices exhibit a high specific strength of 0.027 MPa/kg m(3), an ultrahigh energy absorption per unit volume of 4.0 MJ/m(3), and nearly complete recovery after compression under strains exceeding 50%, thus overcoming the traditional strength-recoverability trade-off. During multiple compression cycles, the composite nanolattices exhibit a high energy loss coefficient (converged value after multiple cycles) of 0.5-0.6 at a compressive strain beyond 50%, surpassing the coefficients of all the micro/nanolattices fabricated recently. Our experiments also revealed that, for a given unit cell size, the composite nanolattices coated with a high entropy alloy with thickness in the range of 14-50 nm have the optimal specific modulus, specific strength, and energy absorption per unit volume, which is related to a transition of the dominant deformation mechanism from local buckling to brittle fracture of the struts.
关键词	nanolattice high-entropy alloy-polymer composite strength recoverability
资助者	National Natural Science Foundation of China ; National Basic Research of China ; National Science Foundation ; Chinese 1000-talents Plan for Young Researchers
DOI	10.1021/acs.nanolett.8b01241
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[11522218] ; National Natural Science Foundation of China[11720101002] ; National Natural Science Foundation of China[11372152] ; National Natural Science Foundation of China[51420105001] ; National Basic Research of China[2015CB932500] ; National Science Foundation[DMR-1709318] ; Chinese 1000-talents Plan for Young Researchers
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:000439008300028
出版者	AMER CHEMICAL SOC
引用统计	被引频次：134[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/135885
专题	中国科学院金属研究所
通讯作者	Yao, Jiahao; Li, Yi; Gao, Huajian; Li, Xiaoyan
作者单位	1.Tsinghua Univ, Dept Engn Mech, Appl Mech Lab, Ctr Adv Mech & Mat, Beijing 100084, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China 3.Dalian Univ Technol, Dept Engn Mech, State Key Lab Struct Anal Ind Equipment, Dalian 116024, Peoples R China 4.Brown Univ, Sch Engn, Providence, RI 02912 USA
推荐引用方式 GB/T 7714	Zhang, Xuan,Yao, Jiahao,Liu, Bin,et al. Three-Dimensional High-Entropy Alloy-Polymer Composite Nanolattices That Overcome the Strength-Recoverability Trade-off[J]. NANO LETTERS,2018,18(7):4247-4256.
APA	Zhang, Xuan.,Yao, Jiahao.,Liu, Bin.,Yang, Jun.,Lu, Lei.,...&Li, Xiaoyan.(2018).Three-Dimensional High-Entropy Alloy-Polymer Composite Nanolattices That Overcome the Strength-Recoverability Trade-off.NANO LETTERS,18(7),4247-4256.
MLA	Zhang, Xuan,et al."Three-Dimensional High-Entropy Alloy-Polymer Composite Nanolattices That Overcome the Strength-Recoverability Trade-off".NANO LETTERS 18.7(2018):4247-4256.