JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 46
·21402-21410
·
IF 4.682
Wang J.,Ou X. L.,Zhang J.,Chen X. Y.,Zhao K.,Yang X. S.,Zhao Y.
Fe(Te,Se) is a simple, iron-based compound that is conducive to the study of superconductivity mechanisms and has potential for large-scale applications. At present, Fe(Te,Se) thin films are primarily prepared using the pulsed laser deposition method. Herein, FeTe 0.6 Se 0.4 films were grown by magnetron sputtering on CaF 2 substrates. The effect of sputtering pressure on the superconductivity of the film was investigated. Excessive pressure caused a higher iron content, which affected the superconductivity and prevented it from completely reaching a zero-resistance state. Δ T c was smaller for the film grown under 0.2 Pa, and its upper critical field reached 144.35 T, which indicates its greater application potential. Our results illustrated that sputtering pressure was a critical process parameter, which provided an important reference for future research to fabricate commercial iron-based superconducting tapes by magnetron sputtering.
研究领域:
凝聚态物理
·
材料科学
·
超导材料
·
薄膜制备
·
应用物理学
✓ 已验证
DOI
高影响因子
Coatings
·
2022
·Vol. 12
·期 9
·1351
·
IF 3.236
Hongqin Zhu,Ji Tan,Jiajun Qiu,Donghui Wang,Zhe Zhao,Zihan Lu,Gaoshan Huang,Xuanyong Liu,Yongfeng Mei
Titanium and its alloys have been widely used for orthopedic and dental implants. However, implant failures often occur due to the implant-related bacterial infections. Herein, titanium oxide nanotubes (TNTs) with an average diameter of 75 nm were formed by anodizing on the surface of titanium, and subsequently gold (Au) nanoparticles were deposited on TNTs by magnetron sputtering (Au@TNTs). The antibacterial study shows that TNTs surface decorated with Au nanoparticles exhibits the preferable effect in restricting the growth ofEscherichia coli(E. coli) andStaphylococcus aureus(S. aureus) even under dark conditions, and the antibacterial rates reached 84% and 75%, respectively. In addition, the constructed film showed no cytotoxicity. Such a selective bactericidal effect of Au@TNTs samples might be attributed to the photocatalytic memory effect, which provides a new insight in the designing of antibacterial surfaces for biomedical application.Keywords:biomaterials;nanoparticles;porous materials;sputtering
研究领域:
生物学
·
医学工程
✓ 已验证
DOI
高影响因子
Energy Storage Materials
·
2017
·
IF 0
Liping Wang,Lei Zhang,Qingji Wang,Wenjun Li,Bo Wu,Weishang Jia,Yuehui Wang,Jingze Li,Hong Li
Lithium metal is a Holy Grail anode for high energy density lithium ion batteries . While, its high chemical reactivity and high tendency to form dendrites hinder its wide applications. Here, in this study, we stabilize lithium metal by engineering an artificial SEI layer, namely fabricating a conformal nano-meter thickness amorphous Al 2 O 3 thin film via magnetron sputtering technique on its surface. The obtained Al 2 O 3 modified Li metals present robust chemical surface stability and effectively restrain the dendrite growth. 20 nm-thick Al 2 O 3 film modified lithium metal in an all-solid-state battery Li/PEO-LiTFSI/Li ensures a cycle life of 660 h at a current density of 0.1 mA/cm 2 . Contradicting to a traditional belief of lithium plating at the current collector side via crossing the Al 2 O 3 film, it directly plates on the Al 2 O 3 film next to the separator side. Al 2 O 3 film plays a crucial role as a “surfactant” in inducing a layer-by-layer film growth mode.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
Materials
·
2021
·Vol. 14
·期 7
·1803
·
IF 3.623
Yibo Ma,Xiaofeng Zhang,Weiming Liu,Youxiu Wei,Ziyi Fu,Jiuyong Li,Xuan Zhang,Jingjing Peng,Yue Yan
A batch of Sn oxides was fabricated by pulse direct current reactive magnetron sputtering (pDC−RMS) using different Ar/O2flow ratios at 0.3 Pa; the influence of stoichiometry on the physical and electrochemical properties of the films was evaluated by the characterization of scanning electron microscope (SEM), X-ray diffraction (XRD), X-ray reflection (XRR), X-ray photoelectron spectroscopy (XPS) and more. The results were as follows. First, the film surface transitioned from a particle morphology (roughness of 50.0 nm) to a smooth state (roughness of 3.7 nm) when Ar/O2flow ratios changed from 30/0 to 23/7; second, all SnOxfilms were in an amorphous state, some samples deposited with low O2flow ratios (≤2 sccm) still included metallic Sn grains. Therefore, the stoichiometry of SnOxcalculated by XPS spectra increased linearly from SnO0.0.08to SnO1.71as the O2flow ratios increased, and the oxidation degree was further calibrated by the average valence method and SnO2standard material. Finally, the electrochemical performance was confirmed to be improved with the increase in oxidation degree (x) in SnOx, and the SnO1.71film deposited with Ar/O2= 23/7 possessed the best cycle performance, reversible capacity of 396.1 mAh/g and a capacity retention ratio of 75.4% after 50 cycles at a constant current density of 44 μA/cm2.Keywords:tin oxide film;reactive magnetron sputtering;oxygen vacancy;cycle performance
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2018
·Vol. 102
·期 4
·1758-1767
·
IF 2.956
Nan Jiang,Weiping Lin,Yu Zhao,Juntao Wang,Qingsong Gao,Haiyun Qu,Lin Ge,Tengfei Xie,Qiang Liu,Yubai Pan,Jiang Li
Using the tape casting method combined with vacuum sintering and hot isostatic pressing, high-quality planar waveguide YAG/10 at.%Yb:YAG/YAG ceramics were successfully prepared. For the sample presintered at 1750°C for 30 hours and then HIPed at 1700°C for 3 hours in 200 MPa argon, the in-line transmittance reached 82.5% at 400 nm and the average grain size was ~17.1 μm. The diffusion behaviors of Yb ions across the contact boundary between the cladding YAG layer and the core Yb:YAG layer were determined by Fick's second law. Then, a 1030 nm continuous-wave (CW) Yb:YAG planar waveguide ceramic laser based on the structure of master oscillator power amplification (MOPA) was realized. After a single-pass amplification, the maximum output of the ceramic slab (60 × 10 × 1 mm 3 ) reached 1251 W and the corresponding optical-to-optical efficiency was 30.0%, which is the highest output power of a Yb:YAG planar waveguide ceramic laser to the best of our knowledge.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2022
·
IF 9.224
Zhiyan Si,Linkai Wang,Yu Han,Jiafeng Yu,Qingjie Ge,Chunyang Zeng,Jian Sun
Catalytic hydrogenation of carbon dioxide into chemicals and fuels has moved into the spotlight in the recent carbon-neutral age. However, this sustainable process is still a low efficiency one due to the limitations of the catalyst materials. Herein, we designed a highly active CuNaFe catalyst with a self-made physical sputtering method for CO2 hydrogenation. The total space time yield (STY) rate of high-value olefin and ethanol can reach as high as 833 mg·g–1·h–1 under a mild condition of 310 °C and 3 MPa, which ranks as one of the top performances among related studies. The characterizations demonstrate that the surface of highly dispersed Cu nanoparticles coupled with surrounding Na modified Fe5C2 creates a well-matched process of C–O activation, C–C coupling, and C–O insertion. These findings provide a new and general strategy to fabricate a high-efficiency catalyst for direct CO2 hydrogenation into useful chemicals.
研究领域:
催化化学
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Coatings
·
2024
·Vol. 14
·期 2
·164
·
IF 2.9
Wanlei Dai,Zhaoyi Jiang,Yali Sun,Juhua Wang,Zeran Gao,Haoyu Xu,Xinzhan Wang,Chao Gao,Qiang Ma,Yinglong Wang,Wei Yu
In this study, a feasible strategy is proposed for directly depositing high-quality Cu(In,Ga)Se2(CIGS) films using Na-doped targets in a selenium-free atmosphere to boost the power conversion efficiency (PCE) of CIGS solar cells. Introducing a small amount of sodium dopant effectively promoted the textured growth of CIGS crystals in the prepared films, resulting in larger grain sizes and a smoother interface. The higher MoSe2content at the CIGS/Mo interface increased the carrier lifetime in the films. In addition, sodium doping increased the proportion of Se atoms on the film surface and reduced the concentration of defects caused by the direct sputtering of the films in the selenium-free atmosphere. Therefore, the separation and transportation of photo-generated carriers in the devices were effectively enhanced. Using the optimized parameters, a record-high PCE of 17.26% was achieved for the 7.5% Na-doped devices, which represents an improvement of nearly 63%.Keywords:Cu(In,Ga)Se2;sodium-doped targets;magnetron sputtering;solar cells
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2024
·
IF 5.4
Xiang Li,Zhitao Liu,Liyuan Zeng,Wanyi Ye,Guangxing Yang,Qiao Zhang,Shengjun Du,Zhiting Liu,Feng Peng
The CO2 electrochemical reduction (CO2ER) to produce valuable multicarbon products represents a promising approach for enhancing CO2 conversion. While previous research has investigated the impact of Cu electrode surface topography on C2 production, it is important to note that other parameters were also altered concurrently with changes in roughness. To isolate the specific effect of surface texture on CO2 electroreduction, this study prepared Cu layers with varying textures using the sputtering method with a varied sputtering time. To characterize the surface features of the sputtered Cu layers, the developed interfacial area ratio (Sdr), known as areal parameter, was introduced, with the aim of correlating it with C2 product selectivity. The results of this study indicate that the improved selectivity of C2 products can be attributed to higher Sdr values, primarily due to a rougher and finer surface texture that increases the local concentration of CO and OH–. This research underscores the significance of surface topography and offers perspectives for designing efficient Cu electrodes for the CO2ER.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2018
·Vol. 8
·期 5
·289
·
IF 3.504
Mingli Wang,Guochao Shi,Yanying Zhu,Yuhong Wang,Wanli Ma
Rapid sampling and multicomponent analysis are vital in pesticide residue detection. In this work, we proposed a SERS platform to detect three kinds of pesticides on apple peels simultaneously by a straightforward “press and peel off” method. The flexible Au/dragonfly wing (Au/DW) substrate was obtained from sputtering Au nanoislands on DW bioscaffold arrays by a simple direct current (DC) magnetron sputtering system. The high-performance substrate exhibited a low limit of detection (LOD) to 4-aminothiophenol (4-ATP) (10−9M), outstanding reproducibility (less than 12.15%), good stability and suitability in multifold pesticide residues detection. Considering its excellent sample collection efficiency, the Au/DW substrate was employed to solve critical pesticide residue problems for detection of acephate (APT), cypermethrin (CPT), tsumacide (MTMC) and their multiple components on apple peels. The results show that the LOD was 10−3ng/cm2for APT obtained on the apple surface with a calculation equation of y = 0.26x + 6.68 and a determination coefficient (R2) of 0.970. Additionally, the LOD values for CPT and MTMC were 10−3ng/cm2and 10−4ng/cm2, respectively. The finding in this work may provide a promising biomimetic SERS platform for on-spot detection of other organic pollutants in the food industry and inenvironmental protection.Keywords:SERS;dragonfly wing;magnetron sputtering;pesticide residue
研究领域:
分析化学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Science
·
2023
·Vol. 10
·期 30
·2303414
·
IF 15.1
Hu Li,Guo-Qin Yang,Xiao-Yang Hu,Yi-Hua Hu,Rui-Bo Zeng,Jin-Rui Cai,Li-Quan Yao,Li-Mei Lin,Li-Ping Cai,Guilin Chen
Sb 2 S 3 is rapidly developed as light absorber material for solar cells due to its excellent photoelectric properties. However, the use of the organic hole transport layer of Spiro-OMeTAD and gold (Au) in Sb 2 S 3 solar cells imposes serious problems in stability and cost. In this work, low-cost molybdenum (Mo) prepared by magnetron sputtering is demonstrated to serve as a back electrode in superstrate structured Sb 2 S 3 solar cells for the first time. And a multifunctional layer of Se is inserted between Sb 2 S 3 /Mo interface by evaporation, which plays vital roles as: i) soft loading of high-energy Mo particles with the help of cottonlike-Se layer; ii) formation of surficial Sb 2 Se 3 on Sb 2 S 3 layer, and then reducing hole transportation barrier. To further alleviate the roll-over effect, a pre-selenide Mo target and consequentially form a MoSe 2 is skillfully sputtered, which is expected to manipulate the band alignment and render an enhanced holes extraction. Impressively, the device with an optimized Mo electrode achieves an efficiency of 5.1%, which is one of the highest values among non-noble metal electrode based Sb 2 S 3 solar cells. This work sheds light on the potential development of low-cost metal electrodes for superstrate Sb 2 S 3 devices by carefully designing the back contact interface.
研究领域:
材料科学
·
光伏技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2024
·
IF 5.3
Yuanzhen Duan,Jiyuan Zhu
Developing spray/template-free superamphiphobic surfaces that can resist various kinds of liquids is crucial for academic study and practical demands. In spite of significant evolution, facilely fabricating superamphiphobic surfaces remains a daunting challenge due to the practical dilemma of the time-consuming preparation process and the guarantee of wettability performance. Herein, a facile magnetron-sputtering-assisted chemical deposition technique is advanced to constitute hierarchical dendritic fractal structures on AZ91D Mg alloys that showcase remarkable biomimicry while significantly contributing to superamphiphobicity through extended re-entrant structures. As well as demonstrating promising chemical stability, such surfaces can display exceptional resistance to water and ethylene glycol. The approach employed to create such instrumental superamphiphobic surfaces offers substantial benefits in affordability and efficiency. Remarkably, the entire preparation process only takes 26 min, presenting a novel method for preparing superamphiphobic surfaces.
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
FUSION ENGINEERING AND DESIGN
·
2016
·
IF 1.301
Jiaqiu Luo,Jialing Yin,Hao Zhang,Mengqi Yao,Wencheng Hu
This work aimed to fabricate a gold coating on the surface of ultralow-density carbon-hydrogen foam cylinder without electroless plating. Poly (divinylbenzene/styrene) foam cylinder was synthetized by high internal phase emulsion, and chemical vapor deposition polymerization approach was used to form a compact poly- p -xylylene film on the foam cylinder. Conducting gold thin films were directly deposited onto the poly- p -xylylene-modified foam cylinder by magnetron sputtering, and electrochemical deposition was adopted to thicken the gold coatings. The micro-structures and morphologies of poly (divinylbenzene/styrene) foam cylinder and gold coating were observed by field-emission scanning electron microscopy. The gold coating content was investigated by energy-dispersive X-ray. The thicknesses of poly- p -xylylene coating and sputtered gold thin-film were approximately 500 and 100 nm, respectively. After electrochemical deposition, the thickness of gold coating increased to 522 nm, and the gold coating achieved a compact and uniform structure.
研究领域:
材料科学
·
表面工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）