Advanced Electronic Materials
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2020
·Vol. 7
·期 1
·2000778
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IF 6.593
Wei Jin,Mingsheng Xu,Xiaojie Zhou,Jiao Wang,Yichen Cai,Husnain Jawad,Mengge Yan,Bobo Tian,Qingmiao Nie,Bo Yan,Chunxiao Cong,Zhi-Jun Qiu,Ran Liu,Laigui Hu
Organic ferroelectrics, particularly the polymer polyvinylidene fluoride and its copolymer polyvinylidene fluoride-trifluoroethylene, have received much attention owing to their low cost, flexibility, and convenient thin film fabrication. However, development of this outstanding material for electronic applications is significantly impeded by its attributes of large coercive electric fields and poor spontaneous polarization. While the recent breakthroughs reveal that several kinds of molecular ferroelectrics (e.g., diisopropylammonium bromide (DIPAB)) can exhibit excellent properties comparable to inorganic ferroelectrics, it is still difficult to obtain high-quality continuous thin films for ferroelectric devices with high performance. In this work, a simple solution strategy is used for the preparation of large-area high crystallinity or even single-crystal DIPAB films. Subsequently, planar ferroelectric capacitors are developed with large in-plane ferroelectric polarization. These capacitors possess excellent memory function with small operating voltages (1–3 V), and a record remnant polarization of 13 µC cm −2 for organic ferroelectric devices. The findings have the potential to pave the way for the substitution of conventional ferroelectric polymers with DIPAB films for future organic ferroelectric devices.
研究领域:
材料科学
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电子工程
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化学
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产品关联
DOI
高影响因子
Animals
·
2023
·Vol. 13
·期 3
·498
·
IF 3
Yan Zeng,Liwen Jiang,Bingyu Zhou,Yubo Liu,Lingang Wang,Zhijin Hu,Chunping Wang,Zhiru Tang
Simple SummaryThis research assessed the effect of organic iron made bySaccharomyces cerevisiae(yeast iron) on digestion, utilization, antioxidation and caecum microflora in weaned piglets. An amount of 20 piglets which had been weaned after 28 days were divided into 4 groups. The basal diet of these 4 groups contained, respectively, 104 mg/kg iron of ferric sulfate or 84 mg/kg, 104 mg/kg or 124 mg/kg iron of yeast iron. The results suggested that a diet containing 84 mg/kg iron of yeast iron has the same effect as a diet containing 104 mg/kg iron of ferric sulfate, and that a diet containing 104 or 124 mg/kg iron of yeast iron is superior to a diet containing 104 mg/kg iron of ferric sulfate.AbstractOrganic iron is expected to replace inorganic iron used in diets as an iron source. Organic iron possesses high absorption efficiency and low fecal iron excretion. This study aims to study the effect of organic iron produced bySaccharomyces cerevisiae(yeast iron) on digestion, utilization, antioxidation and caecum microflora in weaned piglets. In total, 20 piglets that had been weaned after 28 days were divided into 4 groups, each of which followed a different basal diet. The basal diet of each of these 4 groups contained, respectively, 104 mg/kg iron (ferrous sulfate, CON), 84 mg/kg iron (yeast iron, LSC), 104 mg/kg iron (yeast iron, MSC) or 124 mg/kg iron (yeast iron, HSC). This experiment lasted 35 d. The apparent digestibility of iron in LSC, MSC and HMS was higher than that in CON (p< 0.01) and the fecal iron content in LSC, MSC and HMS was lower than that in CON (p< 0.01). Serum iron contents in LSC, MSC and HMS were higher than that in CON (p< 0.01). The iron contents of the heart, lungs, liver, kidney and left gluteus muscle in the MSC and HMS groups were higher than that in CON and LSC (p< 0.05). Serum catalase, glutathione peroxidase, superoxide dismutase activity, superoxide anion, glutathione, hydroxyl free radical scavenging rate, total antioxidant capacity, and liver superoxide anion clearance rate and peroxidase in MSC and HMS were higher than that in CON and LSC (p< 0.05). The contents of nitric oxide and peroxide of the weaned piglets in MSC and HMS were lower than that in CON and LSC (p< 0.05). The abundance of Firmicutes, Blautia and Peptococcus in LSC, HSC and MSC was higher than that in CON (p< 0.01). The abundance of Lactobacillus in CON and LSC was higher than that in MSC and HSC (p< 0.01). The abundance of Acinetobacter, Streptococcus and Prevotella in LSC, MSC and HSC was lower than that in CON (p< 0.01). The results suggested that a diet containing 84 mg/kg iron of yeast iron has the same effect as a diet containing 104 mg/kg iron of ferric sulfate, and that a diet containing 104 or 124 mg/kg iron of yeast iron is superior to a diet containing 104 mg/kg iron of ferric sulfate.Keywords:Saccharomyces cerevisiae;organic iron;antioxidant capacity;caecum microflora;weaned piglets
研究领域:
动物营养学
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微生物学
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兽医学
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DOI
PubMed
高影响因子
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
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2024
·
IF 5.8
Ming Zhang,Fengqi Zhao,Hexin Liu,Na Li,Yifan Jiang,Zhen Zhang,Hui Li,Zhao Qin
Novel graphene iron tannate and graphene iron gallate nanocomplex (G-D-Fe and G-M-Fe) were designed, prepared and characterized by SEM , EDS , FTIR, RAMAN and XPS equipment. The catalytic property of the G-D-Fe and G-M-Fe for energetic TKX-50 was explored by DSC , kinetic calculation and laser ignition. The synthesized G-D-Fe and G-M-Fe present a positive impact on pyrolysis and ignition combustion of TKX-50, resulting in the significantly reduced decomposition temperature , activation energy ( E a ) and ignition delay time. After adding G-D-Fe (G-M-Fe), the first and second decomposition peak temperatures ( T FDP and T SDP ) of TKX-50 were decreased by 42.3 °C (43.9 °C) and 45.0 °C (49.6 °C), respectively. At the conversion degree of 0.2–0.8, the nonlinear kinetic data showed that after adding G-D-Fe and G-M-Fe, the E a of TKX-50 decreased from 163.5 to 141.3 and 145.4 kJ·mol −1 respectively. Additionally, after adding G-D-Ni and G-M-Ni, the laser ignition delay time of TKX-50 was reduced from 58 ms to 26 ms and 28 ms, respectively. The possible catalytic mechanism of preferred combustion catalyst G-D-Fe was disclosed by in-situ FTIR and gas-phase MS-FTIR analysis. The results are helpful to broaden the catalysts for pyrolysis and ignition combustion of TKX-50 and to disclose the catalytic mechanism.
研究领域:
材料科学
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能源化学
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Sustainability
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2024
·
IF 7.1
Nannan Song,Yifan Suo,Feng Rong,Kai Wang,Yong Guo,Zhongwei Chen,Yuan Yu,Tingting Chen,Juncheng Jiang
Enhancing the fire safety of epoxy resin (EP) is crucial due to its widespread but inherent flammability , necessitating the integration of additive flame retardants (FRs) that are effective in small quantities and exhibit efficient flame retardancy. This study constructed a novel, efficient FR by synthesizing organic iron phosphate (ATMP-Fe) and loading it on graphitic carbon nitride (g-C 3 N 4 ). The resulting hybrid flame retardant (ATMP-Fe/g-C 3 N 4 ) was added to EP in minimal amount to bolster its flame retardancy and safety features. Incorporating a mere 3 wt% of ATMP-Fe/g-C 3 N 4 into EP significantly improved its flame retardancy and thermal stability. This was evidenced by an increase in the limiting oxygen index from 25.5% for EP to 30.1%, achieving a V-1 rating in the UL-94 test, and producing a 22.0 wt% char residue . Moreover, there was a substantial reduction in peak heat release rate , total heat release, and total smoke production by 36.3%, 27.5%, and 39.3%, respectively. The reduction in pyrolysis products, along with the formation of a dense and stable char layer facilitated by the synergistic effects of phosphorus and iron elements, significantly improved the fire safety of EP. Additionally, the enhanced hydrophobicity , mechanical properties, and electrical conductivity of the EP/3ATMP-Fe/g-C 3 N 4 composite suggested potential for wider application of EP in various fields.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Heng Yao,Huang Lin,Zhaoyue Xia,Jing Wang,Yadong Jia,Xuexin Li,Daiwen Tao,Hui Yang,Qilong Zhang
The pursuit of self-powered neuromorphic systems confronts a fundamental trade-off: reconciling synaptic functionality, energy autonomy, and mechanical compliance with sustainable fabrication. Herein, we break this dilemma through a biomimetic four-leaf microstructure with size-tunability, constructed via single-step self-assembly of molecular ferroelectrics ( R )-3-Quinuclidinol (R-3-Q) and ferroelectric polymer poly(vinylidene fluoride- co -trifluoroethylene) (P(VDF-TrFE)). These microstructures induce domain reconfiguration and realize ideal synaptic plasticity, including impressive paired pulse facilitation (PPF) / paired pulse depression (PPD) indices (284.7/290.5), satisfactory linearity (α LTP /α LTD = 0.08624/0.09185), and excellent symmetry (ANL = 0.00367). Moreover, they enable stress-locked piezoelectric amplification and achieve considerable electrical output ( V oc = 24.0 V). The synergy of these effects creates a highly-efficient and self-powered neuromorphic system that directly encodes multidimensional mechanical inputs into feature-specific synaptic responses, demonstrating real-time tactile adaption. By harmonizing bioinspired domain engineering with scalable self-assembly strategy, this work pioneered a universal paradigm in human-machine interaction, adaptive neuroprosthetics/robotic skins, metaverse interfaces and embodied intelligence systems.
研究领域:
材料科学
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纳米技术
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神经形态工程
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铁电学
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生物力学
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自供能电子学
✓ 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）