Shape-recovery of implanted shape-memory devices remotely triggered via image-guided ultrasound heating

Zhu, Yang; Deng, Kaicheng; Zhou, Jianwei; Lai, Chong; Ma, Zuwei; Zhang, Hua; Pan, Jiazhen; Shen, Liyin; Bucknor, Matthew D.; Ozhinsky, Eugene; Kim, Seungil; Chen, Guangjie; Ye, Sang-ho; Zhang, Yue; Liu, Donghong; Gao, Changyou; Xu, Yonghua; Wang, Huanan; Wagner, William R.

doi:10.1038/s41467-024-45437-2

Cited by 6 publications

(1 citation statement)

References 39 publications

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“…External stimuli such as heat, light, and electromagnetism have been widely employed to expedite the self-healing process between interfaces. Excitingly, these varied external stimuli also serve as ideal means to control the shape programming-recovery process of SMPs. − Here, we primarily delineate several commonly used diverse driving methods of SMPs, and we explore the effects of different driving methods on self-healing behavior.…”

Section: How To Trigger Shape Memory Behaviormentioning

confidence: 99%

Self-Healing Polymers Coupling Shape Memory Effect

Xu,

Ping,

Gong

et al. 2024

Langmuir

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In recent years, shape memory polymers (SMPs) and self-healing polymers (SHPs) have been research hotspots in the field of smart polymers owing to their unique stimulus response mechanisms. Previous research on SHPs has primarily focused on contact repair. However, in instances where substantial cracks occur during practical use, autonomous closure becomes challenging, impeding effective repair. By integration of the shape memory effect (SME) with SHPs, physical wound closure can be achieved via the SME, facilitating subsequent chemical/physical repair processes and enhancing self-healing effectiveness. This article reviews key findings from previous research on shape memory-assisted self-healing (SMASH) materials and addresses the challenges and opportunities for future investigation.

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Section: How To Trigger Shape Memory Behaviormentioning

confidence: 99%

Self-Healing Polymers Coupling Shape Memory Effect

Xu,

Ping,

Gong

et al. 2024

Langmuir

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Recent Advances in 3D Printing of Smart Scaffolds for Bone Tissue Engineering and Regeneration

Yuan,

Zhu,

Yang

et al. 2024

Advanced Materials

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The repair and functional reconstruction of bone defects resulting from severe trauma, surgical resection, degenerative disease, and congenital malformation pose significant clinical challenges. Bone tissue engineering (BTE) holds immense potential in treating these severe bone defects, without incurring prevalent complications associated with conventional autologous or allogeneic bone grafts. 3D printing technology enables control over architectural structures at multiple length scales and has been extensively employed to process biomimetic scaffolds for BTE. In contrast to inert and functional bone grafts, next‐generation smart scaffolds possess a remarkable ability to mimic the dynamic nature of native extracellular matrix (ECM), thereby facilitating bone repair and regeneration. Additionally, they can generate tailored and controllable therapeutic effects, such as antibacterial or antitumor properties, in response to exogenous and/or endogenous stimuli. This review provides a comprehensive assessment of the progress of 3D‐printed smart scaffolds for BTE applications. It begins with an introduction to bone physiology, followed by an overview of 3D printing technologies utilized for smart scaffolds. Notable advances in various stimuli‐responsive strategies, therapeutic efficacy, and applications of 3D‐printed smart scaffolds are discussed. Finally, the review highlights the existing challenges in the development and clinical implementation of smart scaffolds, as well as emerging technologies in this field.

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Mimosa‐Inspired Body Temperature‐Responsive Shape Memory Polymer Networks: High Energy Densities and Multi‐Recyclability

Kong,

Tan,

Zhang

et al. 2024

Advanced Science

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Inspired by the Mimosa plant, this study herein develops a unique dynamic shape memory polymer (SMP) network capable of transitioning from hard to pliable with heat, featuring reversible actuation, self‐healing, recyclability, and degradability. This material is adept at simulating the functionalities of artificial muscles for a variety of tasks, with a remarkable specific energy density of 1.8 J g−1—≈46 times higher than that of human skeletal muscle. As an intelligent manipulator, it demonstrates remarkable proficiency in identifying and handling items at high temperatures. Its suitable rate of shape recovery around human body temperature indicates its promising utility as an implant material for addressing acute obstructions. The dynamic covalent bonding within the network structure not only provides excellent resistance to solvents but also bestows remarkable abilities for self‐healing, reprocessing, and degradation. These attributes significantly boost its practicality and environmental sustainability. Anticipated to promote advancements in the sectors of biomedical devices, soft robotics, and smart actuators, this SMP network represents a forward leap in simulating artificial muscles, marking a stride toward the future of adaptive and sustainable technology.

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Shape-recovery of implanted shape-memory devices remotely triggered via image-guided ultrasound heating

Cited by 6 publications

References 39 publications

Self-Healing Polymers Coupling Shape Memory Effect

Self-Healing Polymers Coupling Shape Memory Effect

Recent Advances in 3D Printing of Smart Scaffolds for Bone Tissue Engineering and Regeneration

Mimosa‐Inspired Body Temperature‐Responsive Shape Memory Polymer Networks: High Energy Densities and Multi‐Recyclability

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