ACS Applied Polymer Materials
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2024
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IF 4.4
Huibin Liu,Zezheng Qiao,Xiangyu Teng,Haibo Yu,Zheng Yuan,Wenguang Yang
Drawing upon the strong application potential of mechanical hand claws, we have designed a dual-responsive hand claw structured by a photothermal double layer based on poly(N-isopropylacrylamide) and carbon nanotubes. By harnessing the photothermal conversion effect of carbon nanotubes on the hydrogel surface, the hydrogel reversibly absorbs and drains water, thus realizing the basic function of the hand claw. In addition, the integration of the magnetic material with the flexible robot, with the help of magnetic field actuation, effectively improves the mobility and flexibility of the hand claw and makes up for some of the shortcomings of traditional flexible robots. The enhancement of performance through optical-magnetic coupling will provide some valuable insights for the research of underwater microrobots.
研究领域:
材料科学
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机器人学
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生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2020
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IF 3.573
Shengwei Xiao,Xiaomin He,Jie Qian,Xiaohui Wu,Guobo Huang,Huajiang Jiang,Zhicai He,Jintao Yang
The development of hydrogel–organogel bilayer films has greatly promoted the application of asymmetric structures in bionics, biointegrated electronics, and other basic industries. However, the ability to bond the hydrogel and organogel tightly remains a significant challenge. Herein, we propose a simple one-pot method for the fabrication of multiresponsive hydrogel–organogel bilayer films, consisting of a hydrophobic poly(butyl acrylate) (polyBA) layer, a salt-/thermo-responsive poly(3-(1-(4-vinylbenzyl)-1H-imidazol-3-ium-3-yl)propane-1-sulfonat) (polyVBIPS) layer, and interfacially distributed vinyl-functionalized nanoparticles. The presence of functionalized nanoparticles leads to strong adhesion between the hydrogel and organogel via copolymerization between the hydrogel and organogel precursors. Since the hydrophobic organogels and hydrophilic hydrogels exhibit independent swelling–shrinking behaviors, the resultant bilayer films undergo rapid, large-amplitude, reversible, and repeatable bidirectional bending under various external stimuli, such as temperature, salt solutions, and organic solvents. The excellent multiresponsive bending behaviors were further demonstrated in biomimetic manipulators which show excellent “capture–transport–release” complex mechanical motions. Additionally, on the basis of the salt response of polyVBIPS, a conceptual hydrogel–organogel bilayer pipe has been designed for the removal of oil/seawater pollution. Overall, this work provides a new strategy for enhancing interfacial strength in immiscible binary systems. A new hydrogel–organogel bilayer film has been developed with great potential for use in the applications of soft robots and sewage treatment systems.
研究领域:
材料科学
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生物工程
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环境科学
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DOI
高影响因子
ACS Nano
·
2025
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IF 16
Yiqun Zhang,Yangyang Song,Sijian Lin,Xuyi Zhang,Zhuqing Wang,Xiaodong Wu
Natural skin receptors use ions as signal carriers, while most of the developed artificial tactile sensors utilize electrons as information carriers. To imitate the biological ionic sensing behavior, here, we present a kind of biomimetic, ionic, and fully passive mechanotransduction mechanism leveraging mechanical modulation of interfacial ionic p–n junction (IPNJ) through microchannels. Sensors based on this mechanism do not rely on an external power supply and can encode external tactile stimuli into highly analogous signal outputs to those of natural skin receptors, in terms of both signal type (i.e., ionic potential difference) and signal intensity (≈120 mV). More importantly, the instant interfacial IPNJ regulation characteristic endows the sensors with superior performance when compared to the state-of-the-art piezoionic sensors, including a low detection limit of 0.01 N, fast response/recovery speeds (16 ms/16 ms), ultralow power consumption (pW level), excellent reproducibility (over 100,000 cycles), and good capabilities to resolve both static and dynamic mechanical stimulations. As demonstrations, machine-learning-assisted high accuracy (over 99%) surface texture recognition and object classification are successfully demonstrated with the sensors integrated on robotic hands. This work enriches the family of mechanical sensing mechanisms and provides a path to mimicking natural tactile sensory systems for smart skins, artificial prostheses, and intelligent robots.
研究领域:
生物医学工程
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材料科学
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传感器技术
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机器人学
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人工智能
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生物电子学
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机电一体化
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产品关联
DOI
PubMed
高影响因子
ACS Nano
·
2023
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IF 17.1
Fenglian Qi,Lin Li,Zhiwei Li,Lili Qiu,Zihui Meng,Yadong Yin
Chiral plasmonic nanostructures have promising applications in optoelectronics due to their chiroptical responses. However, achieving active tuning of optical chirality remains challenging. Here, we develop stretchable chiroptical films with mechanically tunable extrinsic chirality by assembling hexagonal magnetic/plasmonic hybrid nanodisks in magnetic fields. The nanodisks, synthesized using a space-confined growth method, display three distinct plasmonic resonance modes at the UV–vis–NIR region, which red shift with increasing size as demonstrated by simulation and experimental results. The coupled magnetic and plasmonic anisotropy allows convenient control over the plasmonic resonance modes by altering the strength or direction of external magnetic fields. Further, magnetically aligning the nanodisks in a stretchable polymer film produces superstructures with extrinsic chirality, displaying selective absorption of circularly polarized light and inverted circular dichroism due to the linear dichroism-linear birefringence effect. Reversible mechanical stretching allows for continuous switching of circular dichroism in a wide range (from −1° to +1°). The efficient magnetic alignment of hybrid nanodisks in the hydrogel provides a simple and effective strategy for designing stretchable optical devices with tunable extrinsic chirality.
研究领域:
光电子学
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材料科学
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纳米技术
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光子学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）