MACROMOLECULAR CHEMISTRY AND PHYSICS
·
2024
·Vol. 225
·期 22
·2400224
·
IF 2.5
Gen Li,Rongtai Wan,Shuhan Liu,Lina Wang,Mangmang Yu,Jiang Zhong,Hanjun Yang,Ximei Liu,Baoyang Lu
Strain sensors from conducting polymer hydrogel have been widely employed in various wearable devices, electronic skins, and biomedical applications. These sensors provide outstanding flexibility and high sensitivity by integrating conducting polymer with hydrogels, making them particularly suitable for monitoring human motion and physiological signals like heart rate or muscle activity. Despite their extensive application potential, conducting polymer hydrogel face several technical challenges in practical use, including poor mechanical properties, lack of long-term stability, and difficulty in customizable design. This work introduces a method for fabricating a multipedal strain sensor using poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS)/polyvinyl alcohol (PVA) dimethyl sulfoxide (DMSO)hydrogels through screen printing and demonstrates its application in human motion monitoring. The multipedal strain sensor demonstrates a low Young's modulus (200 kPa), high stretchability (400%), and excellent mechanical cyclic stability (3000 cycles). Furthermore, this strain sensor is further applied to detect human movements such as chewing, smiling, fist clenching, arm bending, and carotid pulse monitoring. Comparative analysis between the multipedal-designed sensor and the non-designed sensor highlights the enhanced sensing capabilities of the multipedal sensor. The design of this multipedal sensor holds the potential to broaden the design concepts for strain sensors and offers new insights for wearable devices and electronic skins.
研究领域:
生物医学工程
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材料科学
·
柔性电子
✓ 已验证
产品关联
DOI
高影响因子
ChemNanoMat
·
2021
·Vol. 7
·期 12
·1348-1354
·
IF 3.154
Jidong Bu,Chenxue Yao,Fengting Li,Shifeng Hou
Graphical A seeded growth synthetic strategy has been developed to synthesize ZIF-8 nanostructures in the form of multipods. Systematic studies were carried out to reveal the effect of several reaction parameters on the growth pattern and thus product morphology. We report a facile method to fabricate ZIF-8 nanostructures in the form of multipods. The success of this work relies on the use of seeded growth as the synthetic strategy, where uniform polyhedral ZIF-8 nanocrystals were prepared initially and served as seeds, followed by the addition of Zn precursor and imidazole to allow preferable growth to specific facets of the seeds and thus the formation of multipod structure. In particular, we were able to rationally synthesize ZIF-8 nanostructures in the form of hexapod and dendrite, respectively, using the similar seeded growth procedure, when the seed morphology was cube and truncated rhombic dodecahedron, respectively. Systematic studies were carried out to reveal the effect of several reaction parameters (e. g., seed amount and CTAB concentration) on growth pattern and thus product morphology. The current work demonstrates the feasibility and versatility of seeded growth for synthesis of colloidal metal-organic frameworks (CMOFs) with multipod structure and could find important use in fabrication of CMOFs with controlled sizes and shapes.
研究领域:
材料科学
·
化学合成
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2015
·Vol. 7
·期 13
·5699-5705
·
IF 7.394
Jing-Jing Lv,Li-Ping Mei,Xuexiang Weng,Ai-Jun Wang,Li-Li Chen,Xiang-Feng Liu,Jiu-Ju Feng
A facile one-pot solvothermal method was developed for the fabrication of well-defined three-dimensional highly branched Pt–Pd alloyed multipods, using ethylene glycol as a solvent and a reducing agent, along with N-methylimidazole as a structure-directing agent, without any seed, template, or surfactant. The as-prepared nanocrystals exhibited a relatively large electrochemically active surface area, improved electrocatalytic activity and superior stability for ethylene glycol oxidation in alkaline media, compared with commercial Pt black and Pd black, making them promising electrocatalysts in fuel cells.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2020
·
IF 7.489
Qiao Yan,Xiao-Yu Wang,Jiu-Ju Feng,Li-Ping Mei,Ai-Jun Wang
Water pollution caused by organic pollutants has aroused great concern to earth sustainability in the last several decades. Herein, a facile one-pot solvothermal approach was developed to construct bimetallic platinum-rhodium alloyed nano-multipods (PtRh ANMPs) in oleylamine (OAm) by adopting creatinine and cetyltrimethylammonium chloride (CTAC) as the co-structure-directing agents. The as-fabricated nanocatalyst exhibited extraordinary catalytic behaviors towards 4-nitrophenol (4-NP) and rhodamine B (RhB) reduction by sodium borohydride (NaBH 4 ). Impressively, the resultant catalyst showed highly facilitated rate constant ( k : 0.209/0.354 min −1 ) and turnover frequency (TOF: 1.0 × 10 −3 /0.44 × 10 −3 mol g −1 min −1 ) towards 4-NP and RhB reduction in comparison with commercial Pt black under the same conditions. This research offers some valuable insights for facile preparation of advanced nanostructures as efficient and recyclable catalyst in environmental remediation field.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2024
·
IF 5.7
Xiaxing Feng,Yaming Sun,Tao Zhang,Jingna Li,Hailiang Zhao,Wenjie Zhao,Guoqiang Xiang,Lijun He
Background Aflatoxin B 1 (AFB 1 ) and its precursors contaminate food and agricultural products, posing a significant risk to food safety and human health, but simultaneous and effective extraction and determination of AFB 1 and its precursors with varied structures is still a challenging task. Results In this study, a bisimidazolium-type ionic liquid functionalized mesoporous multipod silica (SiO 2 @mPMO-IL(im) 2 ) was fabricated to extract AFB 1 and its two precursors, i.e., averantin and sterigmatocystin. The SiO 2 @mPMO-IL(im) 2 could simultaneously extract three targets with varied structures based on the multipods, mesopores, and multifunctional groups. The density functional theory calculations further verified the multiple interactions between SiO 2 @mPMO-IL(im) 2 and targets. The fabricated SiO 2 @mPMO-IL(im) 2 could effectively extract and determine three targets in grains by combing with dispersive solid-phase extraction and high-performance liquid chromatography. Good linearity (r 2 > 0.9978), low LODs (0.9–1.5 μg kg −1 ) and LOQs (3.0–4.5 μg kg −1 ), satisfactory spiked recoveries (92.5%–106.8%) and high precisions (RSD<6.4%) were observed. Significance and novelty This work demonstrates the feasibility of SiO 2 @mPMO-IL(im) 2 for simultaneous and effective extraction of toxins with varied structures and provides a promising sample preparation for the analysis of AFB 1 and its precursors in grain samples.
研究领域:
食品安全
·
分析化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SENSORS
·
2021
·Vol. 21
·期 6
·1972
·
IF 3.576
Shidai Tian,Shijie Li,Yijie Hu,Wei Wang,Aifang Yu,Lingyu Wan,Junyi Zhai
There are numerous works that report wirelessly controlling the locomotion of soft robots through a single actuation method of light or magnetism. However, coupling multiple driving modes to improve the mobility of robots is still in its infancy. Here, we present a soft multi-legged millirobot that can move, climb a slope, swim and detect a signal by near-infrared irradiation (NIR) light or magnetic field dual actuation. Due to the design of the feet structure, our soft millirobot incorporates the advantages of a single actuation mode of light or magnetism. Furthermore, it can execute a compulsory exercise to sense a signal and analyze the ambience fluctuation in a narrow place. This work provides a novel alternative for soft robots to achieve multimode actuation and signal sensing.Keywords:soft millirobot;multi-legged;actuator;light-driven;magnetic response
研究领域:
机器人技术
·
材料科学
·
生物医学工程
·
传感器
✓ 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）