Bioinspired multi-stimulus responsive MXene-based soft actuator with self-sensing function and various biomimetic locomotion

Xu, Liangliang; Zheng, Haowen; Xue, Fuhua; Ji, Qixiao; Qiu, Changwen; Yan, Qi; Ding, Ran; Zhao, Xiaojian; Hu, Ying; Peng, Qingyu; He, Xiaodong

doi:10.1016/j.cej.2023.142392

Cited by 36 publications

(16 citation statements)

References 56 publications

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“…The MOF layer absorbs NIR light and could convert it into thermal energy to heat the MA-PDMS membrane, leading to thermal expansion of the MA-PDMS layer. In general, the thermal contraction of MIL-88A layer and the large thermal expansion of MA-PDMS layer cause the arched membrane to stretch out to form a flat membrane. , Based on the local shape transformation phenomenon, we explore the unidirectional crawling-like movement. As shown in Figure a, as the composite membrane placed on the ratchet ladder undergoes bending and stretching under repeated turning off and on of the NIR light, the negative polymer film drives the positive region downward.…”

Section: Resultsmentioning

confidence: 99%

Asymmetric Metal–Organic Framework-Based Mixed Matrix Membrane for Reversible Self-Assembling 3D Architecture

Zhang

Cui

et al. 2023

ACS Appl. Polym. Mater.

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Shape-transformation metal–organic framework (MOF)-based soft actuators that can quickly respond to external stimuli have been potential candidates in the areas of biomimetic soft robots, smart mechanical devices, and flexible devices. Herein, we construct a unique asymmetric mixed matrix membrane (MMM) consisting of swellable iron(III) fumarate (MIL-88A, MIL= Materials from Institute Lavoisier) on one side and methacrylate-functionalized polydimethylsiloxane (MA-PDMS) on the other side. Upon variation of the humidity environment, the asymmetric composite membrane exhibits reversible and repeatable bending behavior. Through simple graphical programming, the composite membrane obtains a self-folding ability and successfully realizes diversified predictable 3D architectures, including artificial flowers, automatic mechanical claws, and unilateral crawling devices. Moreover, the 3D architecture could be restored to a 2D plane through the desorption of MIL-88A and the thermal expansion of MA-PDMS derived from near-infrared (NIR) light and exhibit continuous motion to imitate living creatures in nature. This work will offer insight into the fabrication of programmable soft actuators, thus shining enlightenment for their potential application in bioinspired soft robots and smart mechanical devices.

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Section: Resultsmentioning

confidence: 99%

Asymmetric Metal–Organic Framework-Based Mixed Matrix Membrane for Reversible Self-Assembling 3D Architecture

Zhang

Cui

et al. 2023

ACS Appl. Polym. Mater.

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“…Ti 3 C 2 T x MXene was synthesized by etching Ti 3 AlC 2 MAX phase powder with the mixture of LiF and HCl as reported previously. , Typically, the LiF/HCl mixed solution was obtained by dissolving 8 g of LiF into 100 mL of 9 M HCl. Then, 5 g of Ti 3 AlC 2 powder was slowly added to the mixed solution within 10 min.…”

Section: Methodsmentioning

confidence: 99%

Lightweight and Mechanically Robust MXene/Polyimide/Silver Nanowire Composite Aerogels for Flexible Piezoresistive Sensors

Xu,

Chen,

Zheng

et al. 2023

ACS Appl. Nano Mater.

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Two-dimensional transition-metal carbides and nitrides (MXenes) show great potential in aerogel flexible piezoresistive sensors owing to their versatile surface chemistry, high carrier mobility, outstanding metallic conductivity, and adjustable interlayer spacing under applied stress. However, the pure MXene aerogel exhibits significant plastic deformation or brittle mechanical performance due to the weak interactions between the nanosheets. Herein, a series of MXene/polyimide/silver nanowire composite aerogels with aligned lamellar microstructure are fabricated by bidirectional freezing and annealing strategies. The introduction of polyimide (PI) and silver nanowires (AgNWs) significantly improves the mechanical properties of the MXene-based aerogel. The obtained lightweight composite aerogel shows superelasticity with large reversible compressibility, excellent stability, and outstanding fatigue resistance. Moreover, owing to the highly aligned lamellar microstructure of the composite aerogel and the excellent conductivity of MXene and AgNWs, the composite aerogel exhibits great sensing performance with high sensitivity (gauge factor ∼27.8) and ultralow detection limit (<0.6 Pa). Based on the MXene/PI/AgNW composite aerogels, a series of wearable sensor applications are demonstrated.

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“…Familiar photothermal agents include carbon-based materials [43,[48][49][50], MXene [51][52][53][54][55][56], metallic nanoparticles [25,44,[57][58][59], semiconductor nanostructures [60], and NIR dyes [61]. These agents can absorb light and convert it into thermal energy.…”

Section: Artificial Materialsmentioning

confidence: 99%

Light-driven small-scale soft robots: material, design and control

Ma,

Zhang,

Yang

et al. 2024

Smart Mater. Struct.

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Small robots for drug transportation, environmental detection and military reconnaissance have been a popular research topic in the field of robotics. Recently, people have proposed using light-driven actuators to make flexible and remote-controllable small robots. Herein, we reviewed the research on light-driven soft robots in recent years. First, we summarized and compared the performance and fabrication method of light-driven actuators. Then, we classified and summarized the structures of robots according to their move mode. After that, we described how to control the robot. Finally, the challenges of light-driven robots are discussed.

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Bioinspired multi-stimulus responsive MXene-based soft actuator with self-sensing function and various biomimetic locomotion

Cited by 36 publications

References 56 publications

Asymmetric Metal–Organic Framework-Based Mixed Matrix Membrane for Reversible Self-Assembling 3D Architecture

Asymmetric Metal–Organic Framework-Based Mixed Matrix Membrane for Reversible Self-Assembling 3D Architecture

Lightweight and Mechanically Robust MXene/Polyimide/Silver Nanowire Composite Aerogels for Flexible Piezoresistive Sensors

Light-driven small-scale soft robots: material, design and control

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