气候变化领域集成服务门户(CCPortal): Rapidly deployable and morphable 3D mesostructures with applications in multimodal biomedical devices

CCPortal

DOI	10.1073/pnas.2026414118
	Rapidly deployable and morphable 3D mesostructures with applications in multimodal biomedical devices
	Zhang F.; Li S.; Shen Z.; Cheng X.; Xue Z.; Zhang H.; Song H.; Bai K.; Yan D.; Wang H.; Zhang Y.; Huang Y.
发表日期	2021
ISSN	00278424
卷号	118 期号:11
英文摘要	Structures that significantly and rapidly change their shapes and sizes upon external stimuli have widespread applications in a diversity of areas. The ability to miniaturize these deployable and morphable structures is essential for applications in fields that require high-spatial resolution or minimal invasiveness, such as biomechanics sensing, surgery, and biopsy. Despite intensive studies on the actuation mechanisms and material/structure strategies, it remains challenging to realize deployable and morphable structures in high-performance inorganic materials at small scales (e.g., several millimeters, comparable to the feature size of many biological tissues). The difficulty in integrating actuation materials increases as the size scales down, and many types of actuation forces become too small compared to the structure rigidity at millimeter scales. Here, we present schemes of electromagnetic actuation and design strategies to overcome this challenge, by exploiting the mechanics-guided three-dimensional (3D) assembly to enable integration of current-carrying metallic or magnetic films into millimeter-scale structures that generate controlled Lorentz forces or magnetic forces under an external magnetic field. Tailored designs guided by quantitative modeling and developed scaling laws allow formation of low-rigidity 3D architectures that deform significantly, reversibly, and rapidly by remotely controlled electromagnetic actuation. Reconfigurable mesostructures with multiple stable states can be also achieved, in which distinct 3D configurations are maintained after removal of the magnetic field. Demonstration of a functional device that combines the deep and shallow sensing for simultaneous measurements of thermal conductivities in bilayer films suggests the promising potential of the proposed strategy toward multimodal sensing of biomedical signals. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Deployable and morphable 3D mesostructures; Instability; Lorentz force; Magnetic force; Mechanically guided assembly
语种	英语
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/180296
作者单位	Key Laboratory of Applied Mechanics of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing, 100084, China; Center for Flexible Electronics Technology, Tsinghua University, Beijing, 100084, China; Department of Mechanical Engineering, Northwestern University, Evanston, IL 60208, United States; Department of Civil and Environmental Engineering, Northwestern University, Evanston, IL 60208, United States; Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60201, United States
推荐引用方式 GB/T 7714	Zhang F.,Li S.,Shen Z.,et al. Rapidly deployable and morphable 3D mesostructures with applications in multimodal biomedical devices[J],2021,118(11).
APA	Zhang F..,Li S..,Shen Z..,Cheng X..,Xue Z..,...&Huang Y..(2021).Rapidly deployable and morphable 3D mesostructures with applications in multimodal biomedical devices.Proceedings of the National Academy of Sciences of the United States of America,118(11).
MLA	Zhang F.,et al."Rapidly deployable and morphable 3D mesostructures with applications in multimodal biomedical devices".Proceedings of the National Academy of Sciences of the United States of America 118.11(2021).