ACS Applied Polymer Materials
·
2023
·
IF 5
Xiaowen Wang,Wenhao Wang,Huibin Liu,Qinghao Guo,Haibo Yu,Zheng Yuan,Wenguang Yang
Due to the reversible ability of hydrogels to absorb and lose water, more and more researchers are applying hydrogels to the research of underwater robots. Sea anemones are soft marine creatures with simple structures and soft bodies, whose extended tentacles shrink in response to danger or capture of food. Inspired by sea anemones, we built a light-driven bilayer gripper to complete the process of catching and releasing. In addition, a bionic sea anemone actuator composed of a magnetic-driven flower stalk and a light-driven flower was designed. Under the effect of an external magnetic field, the bionic sea anemone can wiggle, mimicking the sea anemone’s drift through the water. The light-driven flower has superior programmability and fast response, simulating the contraction of sea anemone when stimulated. In addition, the flower stem of sea anemone can bend to capture prey. The flower stem of the bionic sea anemone introduced is photo-responsive, which can bend in different directions under unilateral light irradiation. This study combines light drive and magnetic drive, providing a reference value for underwater drive of actuators.
研究领域:
软体机器人
·
材料科学
·
仿生学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2020
·
IF 5.774
Hong Wang,Meng Wang
Membrane technologies should have great practical significance in the reclamation of waste acid. In this work, based on unique proton transfer mechanism, a proton permselective membrane is optimally prepared by self-assembly method and used for the waste acid reclamation by the membrane-based processes under different driving forces, such as pressure (PDMP), electric field (EDMP) and concentration gradient (CDMP). Above all, as-prepared membranes are understood from relevant perspectives, including chemical composition, structural morphology and fabricating conditions. Moreover, the effects of series of operating conditions on the corresponding work performances of waste acid recycling processes are explored. At last, a work performance index (WPI) is defined to compare the above membrane processes. Results indicate that PDMP has high processing capacity, whereas EDMP can recover acid with a high concentration. By contrast, CDMP is less energy-consuming. Accordingly, there is no single membrane process which can be regarded as the best choice because they all embrace their own strengths and weaknesses. That is, the combined use of multiple membrane processes and even coupling with other unit operations will be the highlight of future development.
研究领域:
化学工程
·
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xue-Min Yang,Jing-Xiang Lv,Meng-Ting Zheng,Qian-Ting Wang,Uwe Gohs,Kathrin Harre,Dan Xiao
The prospects of endowing the omnipresent hazardous substances with sensitive, safe, and stable life-like behaviors poses significant for the development of on–off switchable smart materials. Herewith, based on material-structural synergistic design, a multi-level responsiveness smart structures (VBGO) inspired by phospholipid biomolecules is self-assembled through asymmetric swelling and smart supramolecular nano-structures. Due to the outstanding sensitive of fire-warning nano-hybrid of functionalized cyclodextrin-graphene and highly stable substrate of vermiculite, the designed VBGO exhibits the high-sensitively fire alarm time (only 0.17 s) and super-along sustained fire alarm time (up to 249 s). Moreover, the VBGO displays significant increment in thermal stability and film-forming properties. Besides, given the asymmetrical and self-assembled smart structures, the VBGO exhibits the unique fast responses in their surrounding environments like fire, heat, light, humidity, and solvent vapor. Additionally, the on–off switchable mechanisms of fire-warning responsiveness, solvent-/humidity-/light-driven, shape memory and environmental awareness are presented systematically. This work introduces a sensitive, safe, and stable approach to designing multi-level responsive smart materials by modifying fire-warning bioinspired structures.
研究领域:
材料科学
·
仿生学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Zhenxuan Zhao,Yu Gao,Shuangshuang Zhao
A soft actuator converts external energy sources like electricity, light, heat, and humidity into mechanical energy.These actuators are widely used in biomedicine, artificial muscles, electrical switches, and data encryption. MXenes, as two-dimensional materials, provide significant advantages, including high hydrophilicity and excellent photothermal and electrothermal conversion capabilities. However, research on MXene-based actuators has mainly focused on Ti 3 C 2 T x , leaving the potential of other MXene materials underexplored. This study developed V 2 CT x /PE film-based stimulus-responsive actuators using lamination and cutting techniques, considering the differing thermal expansion and hygroscopic properties of V 2 CT x and PE films, and examined their electrothermal and photothermal properties. Under a light power density of 70 mW/cm², the V 2 CT x /PE film actuator achieved a bending angle of 61°.The application of the V 2 CT x /PE actuator in smart curtains and crawling machines demonstrates the potential of stimulus-responsive MXene-based composite films for use in smart home technologies and robotics.
研究领域:
材料科学
·
生物医学工程
·
智能设备
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2017
·
IF 3.387
Wei Jiang,Zhaomei Wu,Yingming Zhu,Wen Tian,Bin Liang
Four silver chalcogen compounds, Ag 2 O, Ag 2 S, Ag 2 Se and Ag 2 Te, can be utilized as visible-light-driven photocatalysts. In this research, the electronic structures of these compounds were analyzed by simulation and experiments to systematically reveal the relationship between photocatalytic performance and energetic structure. All four chalcogenides exhibited interesting photocatalytic activities under ultraviolet, visible and near-infrared light. However, their photocatalytic performances and stability significantly depended on the band gap width, and the valence band and conduct band position, which was determined by their composition. Increasing the X atomic number from O to Te resulted in the upward movement of the valence band top and the conduct band bottom, which resulted in narrower band gaps, a wider absorption spectrum, a weaker photo-oxidization capacity, a higher recombination probability of hole and electron pairs, lower quantum efficiency, and worse stability. Among them, Ag 2 O has the highest photocatalytic performance and stability due to its widest band gap and lowest position of VB and CB. The combined action of photogenerated holes and different radicals, depending on the different electronic structures, including anion ozone radical, hydroxide radical, and superoxide radical, was observed and understood. The results of experimental observations and simulations of the four silver chalcogen compounds suggested that a proper electronic structure is necessary to obtain a balance between photocatalytic performance and absorbable light region in the development of new photocatalysts.
研究领域:
材料科学
·
化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Bingchen Zhou,Tianzong Jiang,Yanqi Yin,Zewei Sun,Zichen Lu,Shili Gai,He Ding,Piaoping Yang
Temperature-driven hydrogel actuators exhibit great potential due to their stimulus responsiveness property, flexible design, and low energy consumption. However, the asymmetry of the conventional bilayer hydrogel makes the structure with low interfacial toughness and more prone to delamination. Herein, the polyacrylamide-polydopamine/photo-initiated-poly (N-isopropylacrylamide)‑sodium alginate-CaCl 2 (PPM/ p -PM-Alg-Ca 2+ ), a hetero-structured bilayer hydrogel featuring a transition layer, was developed. Due to the good water absorption of the p -PM-Alg-Ca 2+ layer, the pre-solution of the PPM penetrated into the p -PM-Alg-Ca 2+ layer and formed interpenetrating networks to achieve topological entanglement at the interface, obtaining a bilayer hydrogel with a transition layer. The bilayer hydrogel demonstrates the performance of rapid response actuation (30 s bending from 0° to 320°) and recovery capability (40 s restoring to original state), good signal conversion ability and fast response time (40 ms), and good photothermal performance (heated to 66 °C within 7 min under 808 nm laser irradiation). The transition layer enhanced the interfacial toughness (17.0 kPa) to inhibit the separation of bilayer structure. The hydrogel integrates into the sensor and actuator to realize the non-contact security alarm, dynamic monitor of a ship, and actuator for item collection, providing an integrated solution for the intelligent upgrading of ships and effectively supporting the construction of an intelligent system.
研究领域:
材料科学
·
高分子科学
·
智能材料
·
传感器与驱动器
·
机械工程
·
船舶与海洋工程
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 45
·期 17
·7671-7681
·
IF 3.591
Fengping Peng,Wanxin Xu,Yunya Hu,Weijie Fu,Haozhen Li,Jingyuan Lin,Yafeng Xiao,Zhe Wu,Wei Wang,Chunhua Lu
Inspired by microorganisms in nature, a new type of waste-energy-driven catalytic film was explored for the first time using magnetically actuated artificial cilia. Due to its singular characteristic ciliary movement, the inner-motile catalytic film is capable of capturing waste mechanical energy from flows, which can unexpectedly drive electrochemical reactions in solutions. Based on this, the piezoelectric deposition of Ag nanoparticles was achieved for the first time, which makes Ag nanoparticles distribute more evenly on the body of ZnO nanowires, enhancing the catalytic performance dramatically. Moreover, the influence of Ag nanoparticles on the piezoelectric catalysis was also detected, which can boost the deeper understanding of the piezo-catalytic mechanism. In summary, the inner-motile strategy facilitates the realization of waste-energy-driven catalytic technology, providing a new working prototype for driving the piezo-chemical reaction.
研究领域:
材料科学
·
生物仿生学
·
催化化学
✓ 已验证
DOI
高影响因子
ADVANCED MATERIALS
·
2021
·Vol. 33
·期 43
·2103062
·
IF 30.849
Jian Shu,Du-An Ge,Erlong Wang,Hongtai Ren,Tim Cole,Shi-Yang Tang,Xiangpeng Li,Xiangbo Zhou,Rongjie Li,Hu Jin,Weihua Li,Michael D. Dickey,Shiwu Zhang
Artificial muscles possess a vast potential in accelerating the development of robotics, exoskeletons, and prosthetics. Although a variety of emerging actuator technologies are reported, they suffer from several issues, such as high driving voltages, large hysteresis, and water intolerance. Here, a liquid metal artificial muscle (LMAM) is demonstrated, based on the electrochemically tunable interfacial tension of liquid metal to mimic the contraction and extension of muscles. The LMAM can work in different solutions with a wide range of pH (0–14), generating actuation strains of up to 87% at a maximum extension speed of 15 mm s −1 . More importantly, the LMAM only needs a very low driving voltage of 0.5 V. The actuating components of the LMAM are completely built from liquids, which avoids mechanical fatigue and provides actuator linkages without mechanical constraints to movement. The LMAM is used for developing several proof-of-concept applications, including controlled displays, cargo deliveries, and reconfigurable optical reflectors. The simplicity, versatility, and efficiency of the LMAM are further demonstrated by using it to actuate the caudal fin of an untethered bionic robotic fish. The presented LMAM has the potential to extend the performance space of soft actuators for applications from engineering fields to biomedical applications.
研究领域:
生物医学工程
·
软体机器人
·
仿生学
·
分子生物学
·
转化医学
✓ 已验证
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2025
·
IF 12.5
Ya Lu,Shengnan Li,Yuanyuan Ma,Fang Deng,Yiying Yue,Shaohua Jiang,Mingqiang Ye,Yihui Zhou,Huining Xiao,Jingquan Han
Hydrogel actuators show tremendous promise for applications in soft robots and artificial muscles. Nevertheless, developing a stretchable hydrogel actuator combining remote actuation and real-time signal feedback remains a challenge. Herein, a light-responsive hydrogel actuator with self-sensing function is fabricated by employing a localized immersion strategy to incorporate polyacrylamide (PAM) hydrogel network into semi-interpenetrating carbon nanotube/2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-oxidized cellulose nanofiber/poly(N-isopropylacrylamide) (CNT/TOCN/PNIPAM) hydrogel. CNTs impart photothermal response and electrical conductivity to the hydrogels. TOCNs facilitate the dispersion of CNTs and improve the mechanical properties of the hydrogel. The introduction of PAM further reinforces the mechanical strength and promotes the formation of gradient structure, which can prevent interlayer separation during the actuating process. The optimized CNT/TOCN/PNIPAM-PAM hydrogel actuator with enhanced tensile strength (53.0 kPa), stretchability (131.1 %), conductivity (2.5 S m −1 ) and reversible near-infrared (NIR) light responsiveness (bending velocity 6.25° s −1 ) enables a variety of precise and remote light-responsive deformations. The conductive hydrogel-based strain sensor with high sensitivity (gauge factor, 3.6) can rapidly and accurately identify various human movements. Notably, the hydrogel can perceive its actions driven by NIR light through real-time resistance changes, realizing closed-loop monitoring and sensing feedback, which provided new insights for novel soft biomimetic actuating materials and integrated multi-functional devices.
研究领域:
材料科学
·
高分子科学
·
柔性机器人
·
智能材料
·
传感器技术
·
仿生材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Analytical Methods
·
2024
·Vol. 16
·期 21
·3430-3437
·
IF 2.7
Zhengwei Xiong,Cun Wang,Cheng Liu,Yue Jiang,Yiping Li,Wen Yun
Two levels of nucleic acids-based isothermal amplification normally require a long reaction time due to the low concentration of catalyst, which limits its practical application. A sensitive fluorescence assay of chloramphenicol (CAP) was developed coupled with two-level isothermal amplification using a self-powered catalyzed hairpin assembly (CHA) and entropy-driven circuit (EDC). CAP can bind with its aptamer to open its closed structure. The opened hairpin can initiate self-powered CHA and EDC. The product of CHA can circularly catalyze the CHA with increasing concentration. In principle, the product of CHA plays the role of catalyst and increases with the progression of the reaction. Compared with the normal two levels of amplification, the amplification efficiency of our strategy is much higher due to the self-powered reaction by the CHA product. Thus, the reaction time is shortened to 110 min in this strategy. Moreover, the detection limit for CAP can achieve 0.1 pM and shows promising prospects for practical application.
研究领域:
分析化学
·
分子生物学
·
生物技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED MATERIALS
·
2022
·Vol. 35
·期 9
·2202193
·
IF 32.086
Longhao Zhang,Hao Yan,JiaJia Zhou,Ziguang Zhao,Jin Huang,Lie Chen,Yunfei Ru,Mingjie Liu
Current hydrogel actuators mostly suffer from weak actuation strength and low responsive speed owing to their solvent diffusion-induced volume change mechanism. Here a skeletal muscle-inspired organohydrogel actuator is reported in which solvents are confined in hydrophobic microdomains. Organohydrogel actuator is driven by compartmentalized directional network deformation instead of volume change, avoiding the limitations that originate from solvent diffusion. Organohydrogel actuator has an actuation frequency of 0.11 Hz, 110 times that of traditional solvent diffusion-driven hydrogel actuators (<10 −3 Hz), and can lift more than 85 times their own weight. This design achieves the combination of high responsive speed, high actuation strength, and large material size, proposing a strategy to fabricate hydrogel actuators comparable with skeletal muscle performance.
研究领域:
材料科学
·
生物医学工程
·
仿生学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Pigment & Resin Technology
·
2025
·
IF 1.5
Xiaojian Jiang,Zhonggui Zhang,Jiafei Cheng,Yongjie Ai,Ziyue Zhang,Shuolei Wang,Shi Xu,Hongyu Gao,Yubing Dong
Purpose This study aims to fabricate the reduced graphene oxide (rGO)/ethylene vinyl acetate copolymer (EVA) composite films with electric-driven two-way shape memory properties for deployable structures application. The effect of dicumyl peroxide (DCP) and rGO on the structure and properties of the rGO/EVA composite films were systematically investigated. Design/methodology/approach The rGO/EVA composite films were fabricated by melting blend and swelling-ultrasonication method, DCP and rGO were used the crosslinking agent and conductive filler, respectively. Findings The research results indicate that the two-way shape memory properties of rGO/EVA composite films were significantly improved with the increase of DCP content. The rGO endowed rGO/EVA composite films with excellent electric-driven reversible two-way shape memory and anti-ultraviolet aging properties. The sample rGO/EVA-9 can be heated above Tm within 8 s at a voltage of 35 V and can be heated above the Tm temperature within 12 s under near-infrared light (NIR). Under a constant stress of 0.07 MPa, the reversible strain of the sample rGO/EVA-9 was 8.96% and its electric-driven shape memory behavior maintained great regularity and stability. Research limitations/implications The rGO/EVA composite films have potential application value in the field of deployable structures. Originality/value With the increase of DCP content, the two-way shape memory properties of rGO/EVA composite films were significantly improved, which effectively solved the problem that the shape memory properties of EVA matrix decreased caused by swelling. The rGO endowed rGO/EVA composite films with excellent electric/NIR driven reversible two-way shape memory properties.
研究领域:
材料科学
·
智能材料
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）