ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Xianshuo Wei,Qijun Wu,Lian Chen,Ye Sun,Lin Chen,Chunmei Zhang,Shanshan Li,Chunxin Ma,Shaohua Jiang
As a kind of soft smart material, hydrogel actuators have extensive development prospects, but it is still difficult for these actuators to integrate multiresponsiveness, multiple remote actuation, high strength, fast responsiveness, and programmable complex deformation. Herein, we have explored an anisotropic bilayer hydrogel actuator with an Fe3O4/co-poly(isopropylacrylamide-4-benzoylphenyl acrylate) [Fe3O4/P(NIPAM-ABP)] active layer and an isotropic conductive adhesive (ICAs) passive layer based on the layer-by-layer method. Benefiting from the fibrosis and porosity of the Fe3O4/P(NIPAM-ABP) hydrogel, the ICAs-Fe3O4/P(NIPAM-ABP) hydrogel actuator has excellent mechanical strength (tensile strength of 3.1 ± 0.3 MPa) and response speed (temperature (45 °C): bending speed of 2400.3°/s; near-infrared (NIR) light: bending speed of 356.4°/s; electricity (2 V): bending speed of 180°/s; water (10 °C): recovery speed of 30.0°/s). In addition, the good photothermal properties and magnetic conductivity of Fe3O4 nanoparticles provide precise remotely controllable light- and magnetic-actuated properties for the hydrogel actuator. The Ag microsheets with excellent conductivity (1.4 × 104 S/cm) provide remotely controllable electrical-actuated property for the hydrogel actuator. Combined with the responsiveness of P(NIPAM-ABP), the actuator can achieve short-range actuation including temperature-, ethanol-, and salt-responses. More importantly, it can achieve remote actuation including light, electrical, and magnetic responses. Finally, the Fe3O4/P(NIPAM-ABP) fibers can provide excellent anisotropic structures for the actuator to achieve precise deformational programmability. Inspired by some phenomena in nature, several actuating devices with the above characteristics have been successfully developed. This study can provide a general method for multifunctional anisotropic hydrogel actuators and will provide a new strategy for exploring smart materials suitable for complex bioinspired systems.
研究领域:
材料科学
·
生物仿生学
·
智能材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Energy Materials
·
2022
·
IF 6.959
Yuefan Hu,Zicheng Zhang,Dengfeng Zhang,Fei Xiu,Minjie Zhang,Xuemei Dong,Cheng Song,Zepu Zhang,Chen Chen,Xinyi Xie,Juqing Liu,Wei Huang
Precise and remote control in thermoregulation is essential in intelligent life. Heating films with appropriate electrical, optical, and mechanical properties are key components of thermal control systems for versatile applications. Here, we demonstrate an adaptive thermoregulation remote collaborative platform using a highly transparent and stable flexible passivated silver nanowire (AgNW) electrothermal film. The perfluorinated polymeric sulfonic acid passivation of the AgNW network can inactivate the film to possess superior stability of continuous heating operation (42 °C, 48 h) and high optical transmittance in the visible region (>85%, 4 months) under ambient conditions, as well as a weld nanowire junction for efficient and tunable thermal emission with low operating voltage (20–100 °C, <6 V). By further integrating the heater with a remote negative feedback adaptive control circuit, this system can realize wireless rapid precision temperature control (<1 °C), effective energy utilization with a power saving of ∼34%, and adaptive regulatory stability against external interference. Utilizing the intelligent heater as a tint film has reliable capability of antifog and snow/ice removal, showing great potential in smart homes, automotive electronics, and smart agriculture.
研究领域:
材料科学
·
智能系统
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Shiyu Zeng,Haoyu Zhu,A.S.M. Muhtasim Fuad Sohan,Jun Liu,Xinhua Wan,Xiaodong Lin,Binfeng Yin
The prevention of pollution requires real-time monitoring of cadmium (Cd 2+ ) concentration in the food, as it has a dramatic impact on poultry and can pose a threat to human health. Here, we fabricate a portable workstation integrating a microfluidic chip that facilitates real-time monitoring of Cd 2+ levels in real samples by utilizing the Luminol-KMnO 4 chemiluminescence (CL) system. Interestingly, Cd 2+ can significantly enhance the CL signal, resulting in sensitive detection of Cd 2+ in the range of 0–0.18 mg/L with the limit of detection (LOD) of 0.207 μg/L. Furthermore, a remote-controlled unit is integrated into the portable workstation to form a remote-controlled portable workstation (RCPW) performing automated point-of-care testing (POCT) of Cd 2+ . The as-prepared strategy allows remote control of RCPW to avoid long-distance transportation of samples to achieve real-time target monitoring. Consequently, this system furnishes RCPW for monitoring Cd 2+ levels in real samples, thereby holding potential for applications in preventing food pollution.
研究领域:
环境科学
·
分析化学
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nano Energy
·
2020
·
IF 16.602
Lei Shi,Yanwei Hu,Yurong He
Heat transfer and thermal management have garnered widespread attention due to their industrial applications, particularly for thermal and electronics devices. Therefore, new thermal management solutions are urgently required to maintain optimum temperature and efficiency of the systems. Herein, Fe 3 O 4 magnetic nanofluid was prepared to establish the quick heat conduction channel between heat source and heat sink relying on the high thermal conductivity . And a magneto-responsive remote-controlled heat transfer method was presented by controlling the external physical field and material property . The appearance and disappearance of magnetic “needle-like protuberance” could be tuned by external magnetism ON or OFF. The magnetic responsiveness, adjustability and recyclability of heat transfer have been demonstrated experimentally. The Nusselt number at 30 mT has an enhancement of 112.4% compared to that without magnetic field. And the overheating protection experiments in the heat sink showed that it can effectively reduce the working temperature of electronic components, and the steady temperature decreased by 22.6% using Fe 3 O 4 magnetic nanofluid when applying a magnetic field. This research exhibited a novel approach to achieve excellent heat exchange characteristics by tuning the magnetic field intensities for the utilization of thermal management.
研究领域:
材料科学
·
热力学
·
工程热物理
✓ 已验证
产品关联
DOI
高影响因子
Progress in Natural Science-Materials International
·
2023
·
IF 4.7
Shuting Shen,Na Pan,Chengfei Liu,Wenxin Fan,Kunyan Sui
Under external stimuli, the bilayer hydrogels can change their shapes or move mechanically with fast, sensitive and adjustable motion characteristics. However, the main methods for preparing bilayer hydrogels have many limitations, such as they involve complicated synthesis processes, lead to fragile bilayer interface and structure, and result in single responsiveness and deformation, which hinders the practical applications of bilayer hydrogel in intelligent bionics. Here, we used the reaction-diffusion of sodium alginate (SA) and chitosan (CS) combined with the photopolymerization of N-isopropylacrylamide (NIPAM) to prepare (PNIPAM/SA)/(SA/CS) bilayer hydrogel film. The bilayer hydrogel film can well respond to the alteration of temperature, pH, salt concentration and thickness ratio with good interlayer bonding. This strategy can be applied to intelligent drive device to promote its practical application.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Xianshuo Wei,Lian Chen,Yifan Wang,Ye Sun,Chunxin Ma,Xuxu Yang,Shaohua Jiang,Gaigai Duan
As a soft/wet intelligent material, hydrogel actuators with multiple stimuli-responsiveness have been widely developed. However, it is still greatly difficult for them to integrate bi/multiple responsiveness together for bio-mimetic synergistic actuation. Here, we have explored a high-strength anisotropic bi-layer hydrogel actuator with P(NIPAM-ABP) layer and Fe 3 O 4 /PAN layer via electrospinning technique, which can provide programmable bi-functional synergistic movement. The Fe 3 O 4 /PAN layer can provide magnetic responsive navigation for long-range transportation on account of the magnetism of the Fe 3 O 4 nanoparticles. Furthermore, the ultrahigh photothermal conversion efficiency of the Fe 3 O 4 nanoparticles in the Fe 3 O 4 /PAN layer, can endow the P(NIPAM-ABP) layer with fast remotely-controlled photothermal-responsive deformation. Most importantly, this hydrogel actuator can achieve complex higher-level programmable movements than before based on the synergy of remotely-controlled deformation and the long-range transportation, which can be utilized to design various novel bio-mimetic soft-robots. Last but not least, the introduction of the electrospinning, not only can achieve high strength (4.59 MPa of tensile strength) of this bi-layer hydrogel, but also can provide both ultrafast (178°/s) and programmable complex photothermal-responsiveness, owing to the ultrahigh specific surface area (ultra-thin and porous structure) and excellent orientation of the thermal-responsive P(NIPAM-ABP) nanofibers respectively. This work will provide a general method via electrospinning for anisotropic hydrogel actuator with bi/multiple-functional synergy and will provide a new strategy for smart actuators and other bio-mimetic intelligent materials/systems.
研究领域:
材料科学
·
生物仿生学
·
智能材料
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2017
·
IF 6.216
Wei Li,Tairong Kuang,Xiaoping Jiang,Jintao Yang,Ping Fan,Zhengping Zhao,Zhengdong Fei,Mingqiang Zhong,Lingqian Chang,Feng Chen
We present a comprehensive research on the photo-induced multi-responsibility of azobenzene(azo) diblock copolymer (BPC) grafted from the surface of mesoporous silica as a light-triggered and controllable ions transport system. The surface-initiated RAFT method was used to grow sequentially a first poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA) block serving as an inner layer for the pH and thermal responsibility and a second terminal azo block functionalizing the trans - cis photoisomerization to control the closure or opening of the brushes in water. We show that the ions conductivity of hybrid system could be controlled by the second block switchable between the coil-recoil brush chain states in response to pH or temperature change or exposure to light. It was confirmed a suitable composition ratio of azo BPC brushes could significantly influence the hydrophilicity and polarity of the out layer with light, resulting the protonation or gelation of PDMAEMA block. For example, the Ru(NH 3 ) 6 3+ cations as probing ions was employed to prototyping the controlled permselectivity triggered by the UV light exposure. This kind of hybrid material is particularly interesting in the versatile utility for drug delivery, separating, biomimic sensor and so on.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Zhen Han,Yang Li,Xinjun Wu,Jiawei Zhang
Remotely controllable soft actuators have promising potential applications in many fields including soft robotics, exploration, and invasion medical treatment. Shape memory polymers could store and release energy, resulting in shape deformation, and have been regarded as promising candidates to fabricate untethered soft robots. Herein, an untethered and battery-free soft navigator and gripper based on a shape memory hydrogel is presented. The shape memory hydrogel is obtained through hydrogen bonding between gelatin and tannic acid, and the hydrogel displays excellent shape memory properties on the basis of hydrogen bonding and the coil–triple helix transition of gelatin. Moreover, Fe3O4 nanoparticles are introduced to endow the hydrogel magnetic responsiveness and photothermal conversion capacity. Finally, the shape memory hydrogel in a stretched state is assembled with an inert hydrogel to achieve a bilayer hydrogel actuator, which could produce complex shape transformation due to the shape recovery of the shape memory layer induced by heat or light. Taking advantage of the magnetically control and light-responsive shape deformation, remotely controllable soft grippers that could navigate through tortuous paths and grasp objects from a hard-to-reach place have been accomplished. This approach will inspire the design and fabrication of novel shape memory hydrogels as remotely controllable soft robots.
研究领域:
材料科学
·
软体机器人学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Mengtian Shang,Shaoshuai Ma,Jianfeng Ma,Luyao Guo,Cong Liu,Xinhua Xu
Intelligent stimulus-responsive actuation and excellent sensation of many living organisms have provided researchers a novel insight to fabricate biomimetic self-sensing systems. However, developing indispensable capabilities for somatosensory actuators with information on-demand display and storage encryption system remains a severe challenge. Herein, an intellective somatosensory gradient hydrogel actuator was demonstrated, which combined excellent actuating speed and high sensitivity for on-demand display and storage of information. The conductive hydrogels are synthesized by one-pot polymerization of poly(N-isopropylacrylamide) (namely PNIPAM) and polyaniline functionalized MXene (namely P-MXene) nanocomposites where P-MXene nanosheets offer photothermal responsive characteristics to hydrogel and generate directional migration under the DC electric field to make the hydrogel present anisotropic microstructure. The multifunctional hydrogels have advantages of fast response speed (9.23° s −1 ) and excellent cycle stability, augmented photothermal conversion efficiency (increase to 1.18 °C/s upon 808 nm near-infrared light), and the bending angle reached to 9° s −1 could be adjusted through light-driven remote control. Shape-programmable actuators are fabricated by devising ITO glass electrode patterns, controlling DC electric field direction, and thus various shape-morphing designs such as 6, U, S, Ω are watched under the NIR light irradiations, and the conductivity somatosensory hydrogel has outstanding strain sensor properties, within a universal strain range (100 %), good linearity (R 2 = 0.97) and high sensing properties (GF = 3.11). As a proof-of-concept, self-sensing actuators are applied for an information storage system and a simple deception for on-demand information display that can simultaneously deliver information via real-time displayed pattern variation. This work can provide fundamental research for smart soft actuators chemically integrating actuating speed and sensing functions in the field of information encryption.
研究领域:
材料科学
·
生物仿生学
·
智能系统
✓ 已验证
产品关联
DOI
高影响因子
LAB ON A CHIP
·
2024
·Vol. 24
·期 7
·2122-2134
·
IF 6.1
Meiying Zhao,Ye Tao,Wenshang Guo,Zhenyou Ge,Hanqing Hu,Ying Yan,Chaoxia Zou,Guiyu Wang,Yukun Ren
Soft actuators capable of remote-controlled guidance and manipulation within complex constrained spaces hold great promise in various fields, especially in medical fields such as minimally invasive surgery. However, most current magnetic drive soft actuators only have the functions of position control and guidance, and it is still challenging to achieve more flexible operations on different targets within constrained spaces. Herein, we propose a multifunctional flexible magnetic drive gripper that can be steered within complex constrained spaces and operate on targets of various shapes. On the one hand, changing the internal pressure of the magnetic gripper can achieve functions such as suction or injection of liquid and transportation of targets with smooth surfaces. On the other hand, with the help of slit structures in the constrained environment, by simply changing the position and orientation of the permanent magnet in the external environment, the magnetic gripper can be controlled to clamp and release targets of linear, flaked, and polyhedral shapes. The full flexibility and multifunctionality of the magnetic gripper suggest new possibilities for precise remote control and object transportation in constrained spaces, so it could serve as a direct contact operation tool for hazardous drugs in enclosed spaces or a surgical tool in human body cavities.
研究领域:
生物医学工程
·
微创手术技术
·
智能材料与器件
✓ 已验证
DOI
高影响因子
International Journal of Smart and Nano Materials
·
2021
·
IF 4.5
Fenghua Zhang,Nan Wen,Linlin Wang,Yunqi Bai,Jinsong Leng
As a kind of medical treatment device, shape memory tracheal stent has a good application prospect. The biodegradable stent can effectively reduce the damage to patients and improve the therapeutic performance of stents. In this work, a series of shape memory polylactic acid (Fe3O4) composite tracheal stents were manufactured by 4D printing. The composite tracheal stents with different structures were designed. Moreover, with the addition of magnetic particles Fe3O4, the shape memory PLA/Fe3O4 composite tracheal stent has a magnetic driving effect. Under the magnetic field, the shape recovery process is completed within 40 s, and the shape recovery rate is more than 99%. Moreover, the 4D printed tracheal stent was also triggered by the irradiation of infrared lamp to realize the remote controlling recovery. The research on the structure design and driving method of 4D printing tracheal stent expands the application scope of shape memory polymer composites in biomedical field, provides a new way for personalized implantable medical devices and minimally invasive surgery. It is of great significance for better precision medical treatment.
研究领域:
生物医学工程
·
材料科学
·
医疗器械
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Tiantian Fang,Xifan Chen,Changyu Yang,Yaqi Cao,Junshi Zhang,WenChao Peng,Yang Li,Fengbao Zhang,Xiaobin Fan
Smart hydrogels with good flexibility and biocompatibility have been widely used. The common near-infrared (NIR) photothermal agents are facing a trade-off between good photothermal-conversion efficiency and high biocompatibility. Therefore, developing new metal-free photothermal agents with low cost, high biocompatibility and excellent phase stability is still in urgent need. In this study, we successfully combined poly( N -isopropylacrylamide) (PNIPAM) with the two-dimensional (2D) silicene nanosheets via the in situ polymerization method. Attributed to the thermal-responsive nature of PNIPAM and the excellent photothermal properties of 2D silicene, the obtained silicene/PNIPAM composite hydrogels exhibited dual thermal and NIR responsive properties. This smart hydrogel showed rapid, reversible and repeatable NIR light-responsive behaviors. The volume of this smart hydrogels can shrink significantly under NIR irradiation and recover to its original size without the NIR irradiation. Remote near-infrared light-controlled microfluidic pipelines and electronic switches based on obtained silicene/PNIPAM composite hydrogels were also demonstrated. This work significantly broadens the application prospects of silicene-based hydrogels in remote light-controlled devices.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）