Shape Memory Actuation of Janus Nanoparticles with Amphipathic Cross-Linked Network

Zhang, Jinlong; Zheng, Xiaotong; Wu, Fengluan; Yan, Bingyun; Zhou, Shaobing; Qu, Shuxin; Weng, Jie

doi:10.1021/acsmacrolett.6b00730

Cited by 16 publications

(10 citation statements)

References 43 publications

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“…Next, the specimens separated by a high-speed centrifuge and then dried under vacuum until the mass remained unchanged ( M 1 ). Consequently, the gel fraction ( G f ) was calculated according to the following equations: …”

Section: Methodsmentioning

confidence: 99%

Intrinsically Stretchable and Shape Memory Conducting Nanofiber for Programmable Flexible Electronic Films

Tang

Zheng

Yang

et al. 2019

ACS Appl. Mater. Interfaces

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Recently, flexible and stretchable electronic films have been drawing increasing attention but are limited by the nature of elastomeric materials and the embedded structure; thus, these films cannot achieve long-term and stable electrical performance at certain deformation states in practical applications. Here, we report intrinsically stretchable and shape memory polycaprolactone/polyethylene glycol/silver nanowires films (PPAFs) based on a dual-layer network structure of nanofibers that can achieve both shape-fixable and deformation-reversible conductivity in the elongation range. We also demonstrate the resistance characteristic of PPAFs at the same/ different deformation rates, which shows the unique memorable resistance and the variable conversion of a "conductive−insulation− conductive" state. Importantly, the change in sheet resistance of the PPAFs fixed at any rate of deformation could sustainably recover the initial sheet resistance even after cyclic thermal responses. Furthermore, we successfully develop the programmable conductivity of PPAFs as a monitoring, switching, and alarming device for shape memory cycles through the ingenious design of a microcircuit and simulation analysis using Proteus software. PPAFs show great potential for changeable characteristics in both shape and resistance for use in flexible electronic films.

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Section: Methodsmentioning

confidence: 99%

Intrinsically Stretchable and Shape Memory Conducting Nanofiber for Programmable Flexible Electronic Films

Tang

Zheng

Yang

et al. 2019

ACS Appl. Mater. Interfaces

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“…Finally, special type of system was demonstrated using amphipatic cross-linked network with shape memory, 59 hollowed-out noble metal nanoparticles was shown to undergo self-propulsion using acoustic waves, 89 and nanobowls consisted of homopolymers. 86…”

Section: Sphere Dimersmentioning

confidence: 99%

Nanorobots: Machines Squeezed between Molecular Motors and Micromotors

Novotný

Hong

Pumera

2020

Chem

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The development of a new set of tools is often a culminating point in humanity's understanding and harnessing of nature. So-called ''micro/nanomotors'' are artificial machines that convert chemical energy to propulsion and have already served as building blocks for many futuristic applications. With the never-ending push toward miniaturization in every aspect, the combined recent efforts of multiple disciplines will create genuinely nanosized artificial machines, with all dimensions below 1,000 nm. However, there is a strong fundamental and methodological barrier in the creation and utilization of nanomachines that sets them apart from their microscale counterparts: the strong dominance of Brownian forces and the difficulty of analyzing their motion. In this review, we critically assess the new fully nanosized robots and compare them with current microrobot technology and applications.

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“…Despite numerous advantages of inorganic JNPs, the toxicity and the hydrophobicity from unmodified bare NPs limit their broader applications. , However, the accompanying ligand-coated NPs exhibit lower toxic effects. ,, Therefore, the surface of inorganic JNPs in general requires functional closure with polymeric ligands to reduce cytotoxicity and enhance performance to regulate interactions between JNPs and organisms. − The combination of inorganic and polymeric JNPs enormously carries the domain of JNPs forward not only on the morphology but also in other momentous fields. , Based on reported uniformed JNPs, more and more revelations of multiplied composite JNPs have been developed, such as UFO-like nanostructures (Figure B), octopus-like (Figure C), hemisphere (Figure D,E), sphere-cubic like (Figure F), distorted cylinder-like structures (Figure G), and Tai-chi-like JNPs (Figure I). − …”

Section: Synthesis Strategies Of Inorganic/polymeric Composite Jnpsmentioning

confidence: 99%

Janus Nanoparticles: From Fabrication to (Bio)Applications

et al. 2021

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Janus nanoparticles (JNPs) refer to the integration of two or more chemically discrepant composites into one structure system. Studies into JNPs have been of significant interest due to their interesting characteristics stemming from their asymmetric structures, which can integrate different functional properties and perform more synergetic functions simultaneously. Herein, we present recent progress of Janus particles, comprehensively detailing fabrication strategies and applications. First, the classification of JNPs is divided into three blocks, consisting of polymeric composites, inorganic composites, and hybrid polymeric/inorganic JNPs composites. Then, the fabrication strategies are alternately summarized, examining self-assembly strategy, phase separation strategy, seed-mediated polymerization, microfluidic preparation strategy, nucleation growth methods, and masking methods. Finally, various intriguing applications of JNPs are presented, including solid surfactants agents, micro/nanomotors, and biomedical applications such as biosensing, controlled drug delivery, bioimaging, cancer therapy, and combined theranostics. Furthermore, challenges and future works in this field are provided.

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Shape Memory Actuation of Janus Nanoparticles with Amphipathic Cross-Linked Network

Cited by 16 publications

References 43 publications

Intrinsically Stretchable and Shape Memory Conducting Nanofiber for Programmable Flexible Electronic Films

Intrinsically Stretchable and Shape Memory Conducting Nanofiber for Programmable Flexible Electronic Films

Nanorobots: Machines Squeezed between Molecular Motors and Micromotors

Janus Nanoparticles: From Fabrication to (Bio)Applications

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