CHEMICAL PHYSICS LETTERS
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2025
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IF 3.1
Qingqing Yang,Chaosheng Yuan,Yongfu Liang,Xiang Zhu,Zheng Wang,Xuerui Cheng,Lei Su
The high-pressure behaviors of 1,3,5-triazine ( s -triazine) was investigated under static and dynamic compression to elucidate the effects of compression rate on its phase transitions and chemical reactions. Static compression experiments revealed that s -triazine underwent a phase transition from phase I to phase II at 0.69 GPa and initiated chemical reactions above 10.84 GPa. Dynamic compression, however, resulted in a more chemically stable overpressure phase II’, which maintained its structure up to 17.32 GPa. The distinct responses to compression rates suggest that dynamic compression induces metastable structures of s -triazine that consume energy, preventing chemical reactions below the energy threshold. This study highlights the importance of compression rate in determining the chemical and physical properties of s -triazine under high pressure.
研究领域:
高压物理
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材料科学
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化学反应动力学
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DOI
高影响因子
Science China-Materials
·
2024
·Vol. 67
·期 3
·871-878
·
IF 6.8
Li Pengyang,Xiong Jinhua,Yan Qian,Ding Renjie,Zheng Haowen,Xue Fuhua,Zhao Xu,Chen Zhong,Liu Zonglin,Tang Zhigong,Peng Qingyu,He Xiaodong
Pressure sensors still face the challenge of combining high sensitivity with a wide detection range. In this study, we designed a tension–compression conversion structure and combined it with a variable stiffness design strategy to fabricate pressure-sensing devices. The structure can convert the sensing properties of two-dimensional (2D) stretchable materials into the sensing properties of 3D compressible devices. The sensing and mechanical properties can be designed through simulations and theoretical calculations. The slope structure provides linear sensing within 24.3 N. The variable stiffness design strategy enables the sensor to sense a small load with high sensitivity (3.5 N −1 ) with a wide pressure range (0.002–24.3 N, with an extended range of 82.6 N). In addition, the sensing structure can work stably in an underwater environment. This design strategy of using 2D stretchable strain sensors as the sensing unit to develop a compression sensor device will provide new ideas for future sensor design.
研究领域:
传感器设计
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材料科学
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机械工程
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微电子学
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智能材料
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柔性电子学
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DOI
高影响因子
COMPOSITES COMMUNICATIONS
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2022
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IF 7.685
Dengkang Guo,Sheng Yang,Feng Fu,Gaiyun Li,Fuxiang Chu
In this study, an ultra-high-strength compressed wood-epoxy polymer composite (CWEPC) was prepared by selective compression followed by epoxy monomer impregnation. Results showed that the flexural strength (343.8 MPa), flexural modulus (20.7 GPa), compressive strength (202.45 MPa), hardness (20.9 kN), and impact strength (47.5 kJ/m 2 ) of the CWEPCs improved by 286.2%, 204.4%, 240.1%, 1050.6%, and 242.1% compared to that of natural wood, respectively. Moreover, no waste was generated during preparation. This study provides a simple and feasible strategy for the preparation of high-strength wood-based composites.
研究领域:
材料科学
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林业工程
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DOI
高影响因子
ACS Omega
·
2020
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IF 2.87
Bojuan Hao,Kaige Wang,Yukun Zhou,Chaofan Sui,Lei Wang,Ren Bai,Zhaojin Yang
DNA molecular compaction/decompaction is of great significance for the exploration of basic life processes, the research of biomedical and genetic engineering, and so forth. However, the detailed mechanism of DNA compaction/decompaction caused by surfactants remains an open and challenging problem that has not been fully solved so far. In this paper, a sort of novel solid substrate, nanoPAA-ZnCl2-AuLs, with good stability and high sensitivity, was prepared by a self-assembly method. Based on this substrate, the surface-enhanced Raman scattering (SERS) technology was employed to investigate characteristics of interactions between DNA molecules and surfactants at a single molecular level. SERS spectra of calf thymus DNA (ctDNA), cetyl trimethyl ammonium bromide (CTAB), and sodium dodecyl sulfate (SDS) with a concentration as low as 10–9 M, and SERS spectra of ctDNA–CTAB and ctDNA–CTAB–SDS composites were collected, respectively. The interactions between ctDNA and surfactants were analyzed by changes in SERS spectra, for example, disappearances and appearances of SERS bands and relative changes of peak intensity, in which CTAB resulted in the compaction of the DNA molecule while SDS induced the decompaction of the ctDNA–CTAB complex. Moreover, UV–visible spectrophotometry was employed to demonstrate the compaction/decompaction of ctDNA molecules caused by surfactants. The local binding modes of ctDNA molecules and surfactant molecules were expounded. This work will be helpful for understanding biological processes such as DNA compaction and recombination within nucleus or/and cells and for the development of gene therapy technologies.
研究领域:
生物物理学
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分子生物学
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基因治疗
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产品关联
DOI
PubMed
高影响因子
Journal of Materials Research and Technology-JMR&T
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2025
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IF 6.6
Hao Zhang,Linwei Li,Shicheng Wei,Hongjie Luo,Xinyang Wang,Yujiang Wang,Lei Guo,Bo Wang,Yi Liang
In this study, porous titanium and porous TC4 (Ti-6Al-4V) titanium alloy with a porosity of 55±2% were fabricated using the magnesium particle space holder-distillation-sintering process. Through performance tests and microstructural characterization, the differences and underlying mechanisms of their quasi-static and impact compression properties were investigated. Under quasi-static compression, the energy absorption density (65.01±11.70 MJ/m 3 ) and energy absorption efficiency (75.58±2.95%) of porous TC4 were significantly superior to those of porous titanium (28.77±3.16 MJ/m 3 and 59.98±5.05%, respectively), corresponding to 2.26 times higher in energy absorption density and 1.26 times higher in energy absorption efficiency. Macroscopically, porous TC4 exhibited a prolonged stress plateau owing to sufficient deformation and slow crack propagation. Microscopically, Al and V pinned dislocations, inhibited dynamic recovery, and promoted the formation of stable low-angle grain boundary (LAGB) networks, thereby avoiding strain localization. Under impact compression tested via SHPB over strain rates of 1282–4290 s -1 , porous TC4 demonstrated a more pronounced strain-rate strengthening effect. This is attributed to the elevation of the Peierls–Nabarro stress and the introduction of the solute drag effect by Al and V, which rendered dislocation motion highly dependent on strain rate. The study elucidates the regulatory role of alloying elements, quantifies the contribution of micro-factors to strain-rate strengthening, identifies Al and V as the core elements for performance enhancement, and provides key theoretical and technical foundations for the optimization of porous metallic materials.
研究领域:
材料科学
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生物医学工程
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金属材料
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力学性能
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组织表征
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能量吸收材料
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增材制造
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生物材料
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产品关联
DOI
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2024
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IF 8.3
Xueyong Deng,Wen Zhai,Chunlin Fan,Longbo Luo,Xiangyang Liu
The terrible compressive strength is a prominent issue that restricts the broad application of organic fibers in multi-dimensional stress scenarios. Traditional strategies focus on enhancing the axial compressive performance of fibers, simultaneously improving the axial and transverse compressive properties of fibers still poses significant challenges. Inspired by the octopus's tentacles that can conduct stress in multiple directions, a novel strategy by constructing branched multi-hydrogen bonding sites structure in aramid fiber was conducted to solve the problem. The branched multi-hydrogen bonding sites constructed on nano-silica (SiO 2 –B) offer excellent dispersibility within the poly( p -phenylene-benzimidazole-terephthalamide) (PBIA) matrix. Composite fibers (PBIA-SiO 2 -B) co-mixed with SiO 2 –B and PBIA were prepared using a solution spinning technique. The results of Fourier-transform infrared spectroscopy (FTIR) and dynamic mechanical analysis (DMA) reveal that the introduction of SiO 2 –B significantly enhances the intermolecular interactions within the composite fibers, and this enhancement mechanism has been elaborately elucidated through molecular simulations. Furthermore, finite element simulations confirmed that the incorporation of branched structure exhibits enhanced stress-bearing capabilities under multi-directional stress and offers outstanding support when subjected to transverse compressive stress compared to linear molecular chains. Hence, compressive property testing revealed that the PBIA-SiO 2 -B composite fibers achieved axial compressive strengths and transverse compressive strengths of 714.3 MPa and 305.8 MPa, respectively, representing increases of 68.8 % and 26.8 % over pure PBIA fibers. Moreover, with the enhancement of transverse compressive strength, the Young's modulus and interfacial shear strength of PBIA-SiO 2 -B fibers were also increased by 7.1 % and 20.9 %, respectively.
研究领域:
材料科学
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化学工程
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力学
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产品关联
DOI
高影响因子
Nature Communications
·
2020
·Vol. 11
·期 1
·1-13
·
IF 12.121
Jia Chao,Li Lei,Liu Ying,Fang Ben,Ding He,Song Jianan,Liu Yibo,Xiang Kejia,Lin Sen,Li Ziwei,Si Wenjie,Li Bo,Sheng Xing,Wang Dongze,Wei Xiaoding,Wu Hui
Advanced ceramic sponge materials with temperature-invariant high compressibility are urgently needed as thermal insulators, energy absorbers, catalyst carriers, and high temperature air filters. However, the application of ceramic sponge materials is severely limited due to their complex preparation process. Here, we present a facile method for large-scale fabrication of highly compressible, temperature resistant SiO 2 -Al 2 O 3 composite ceramic sponges by blow spinning and subsequent calcination. We successfully produce anisotropic lamellar ceramic sponges with numerous stacked microfiber layers and density as low as 10 mg cm −3 . The anisotropic lamellar ceramic sponges exhibit high compression fatigue resistance, strain-independent zero Poisson’s ratio, robust fire resistance, temperature-invariant compression resilience from −196 to 1000 °C, and excellent thermal insulation with a thermal conductivity as low as 0.034 W m −1 K −1 . In addition, the lamellar structure also endows the ceramic sponges with excellent sound absorption properties, representing a promising alternative to existing thermal insulation and acoustic absorption materials.
研究领域:
材料科学
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陶瓷工程
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热绝缘
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声吸收
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产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2024
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IF 5.3
Lihuan Zhao,Yanyan Li,Yuwen Wang,Changjing Li,Yulong Chen,Mingzhu Yuan
Wearing a compression garment (CG) can effectively prevent and treat hypertrophic scars (HS), but the surface of CG is prone to bacterial growth. Therefore, it is particularly important to carry out antibacterial finishing on compression garment fabric (CGF). In order to achieve the purpose of synergistic antibacterial action, improving bacteriostatic rate, and enhancing biological safety, this study prepared a composite material of MXene (Ti3C2Tx), chitosan, and amino silane coupling agent (3-aminopropyl)triethoxysilane (APTES) and its antibacterial CGF. The binding mechanism between the antibacterial composite material and the CGF was explored, and the bacteriostatic rates, wearing properties, and wash fastness of the antibacterial CGF were studied. Results showed that Ti3C2Tx, chitosan, and APTES were covalently bonded to the CGF, achieving synergistic antibacterial effects. The antibacterial CGF without washing showed a bacteriostatic rate of 99.9% against both Gram-negative bacteria Esherichia coli (E. coli, AATCC 6538) and Gram-positive bacteria Staphylococcus aureus (S. aureus, AATCC 25922), with washing fastness reaching grade AA. Additionally, the comfort of the antibacterial finishing fabric was affected to a certain extent in terms of flexural rigidity and air permeability, but overall, the wearability of the antibacterial CGF also met the daily wearing needs of patients.
研究领域:
生物医学工程
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材料科学
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纺织科学
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产品关联
DOI
高影响因子
Advanced Science
·
2020
·Vol. 7
·期 14
·2000587
·
IF 15.84
Jingya Nan,Gaitong Zhang,Tianyu Zhu,Zhongkai Wang,Lijun Wang,Hongsheng Wang,Fuxiang Chu,Chunpeng Wang,Chuanbing Tang
Compressible solid-state supercapacitors are emerging as promising power sources for next-generation flexible electronics with enhanced safety and mechanical integrity. Highly elastic and compressible solid electrolytes are in great demand to achieve reversible compressibility and excellent capacitive stability of these supercapacitor devices. Here, a lithium ion-conducting hydrogel electrolyte by integrating natural protein nanoparticles into polyacrylamide network is reported. Due to the synergistic effect of natural protein nanoparticles and polyacrylamide chains, the obtained hydrogel shows remarkable elasticity, high compressibility, and fatigue resistance properties. More significantly, the supercapacitor device based on this hydrogel electrolyte exhibits reversible compressibility under multiple cyclic compressions, working well under 80% strain for 1000 compression cycles without sacrificing its capacitive performance. This work offers a promising approach for compressible supercapacitors.
研究领域:
材料科学
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电化学
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纳米技术
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能量存储
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DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2021
·
IF 4.094
Hao Xiong,Anze Shui,Qingliang Shan,Shenghui Zeng,Xiuan Xi,Bin Du
To recycle application of polishing porcelain stoneware tile residues (PPR), foamed ceramics were usually considered as an effective way. In this study, a kind of foamed ceramic was synthesized, simulating the main phase of PPR. The effects of SiO 2 addition on crystalline phase, microstructure, physical properties, thermal conductivity , mechanical performance were systematically investigated, the related mechanism was discussed in detail as well. With the increase of SiO 2 , a large amount of spinel was formed in the foamed ceramics. The results demonstrated that the foamed ceramic with 10 wt% SiO 2 powder, sintered at 1200 °C for 30 min, possesses compressive strength of ~30.6 MPa, thermal conductivity of ~0.43 W*m −1 k −1 , average pore size of ~15 μm and porosity of ~44.1%. A unique structure with gaps in the pore wall of sample containing 10 wt % SiO 2 was found, which gives the foamed ceramics high compressive strength and low thermal conductivity.
研究领域:
材料科学
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陶瓷工程
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产品关联
DOI
高影响因子
Polymers
·
2023
·Vol. 15
·期 7
·1593
·
IF 5
Wenhao Wang,Mengyao Chen,Yan Wu
Elastic materials have a wide range of applications in many industries, but their widespread use is often limited by small-scale production methods and the use of highly polluting chemical reagents. In this study, we drew inspiration from research on wood softening to develop an environmentally friendly and scalable approach for producing a new type of compressible wood material called CW from natural wood. To achieve this, we employed a top-down approach using a novel type of “ionic liquid” eutectic solvent (DES) that is cost-effective, environmentally friendly, and recyclable. After treatment with DES, the resulting CW demonstrated good elasticity and durable compressibility, which was achieved by removing some lignin and hemicellulose from the wood and thinning the cell walls, thereby creating a honeycomb structure that allows for sustained compression and rebound. However, we found that the wood treated with a single eutectic solvent showed some softening (CW-1), although there was still room for further improvement of its elasticity. To address this, we used a secondary treatment with sodium hydroxide alkali solution to produce a softer and more elastic wood (CW-2). We conducted a series of comparative analyses and performance tests on natural wood (NW) and CW, including microscopic imaging; determination of chemical composition, mechanical properties, and compressive stress effects; and laser confocal testing. The results show that the DES and sodium hydroxide alkali solution treatments effectively removed some lignin, hemicellulose, and cellulose from the wood, resulting in the thinning of the cell walls and creating a more elastic material with a sustainable compression rebound rate of over 90%. The various properties of CW, including its elasticity, durability, and sustainability, provide great potential for its application in a range of fields, such as sensors, water purification, and directional tissue engineering.Keywords:wood chemistry;deep eutectic solvents;cellulose nanofiber;mechanical compressibility;elastic porous structure
研究领域:
材料科学
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化学工程
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环境科学
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生物技术
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产品关联
DOI
PubMed
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
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2024
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IF 7.4
Xuan Hou,Shuhua Ma,Xiaohui Wang,Yanjun Ou,Ruiping Liu
Industrial waste fly ash was transformed into a fluffy C-S-H (hydrated calcium silicate) material with thermal activation process . The textural property of the material makes it easily integrated and well dispersed in cement using 2% addition. Characterization techniques such as hydration heat, XRD , thermogravimetric analysis , were carried out to elucidate the effect of this C-S-H on cement hydration : the compressive strength of cement mortar was improved beyond 25%; and the viscosity of cement paste was reduced by 22%; the volume of solidified cement expand by 10%. This advances the overall utilization of cement and improve the properties as well.
研究领域:
材料科学
·
水泥化学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）