Journal of Materials Science: Materials in Electronics最新文献

{"title":"Investigating multipurpose reddish-orange emitting vanadate-based nanomaterials activated by Sm(III) for use in latent fingerprinting and photophysical applications","authors":"Neeraj Sehrawat, Poonam Devi, Hina Dalal, Diksha Solanki, Ojas Garg, Mukesh Kumar, Sapana Garg","doi":"10.1007/s10854-024-13408-4","DOIUrl":"https://doi.org/10.1007/s10854-024-13408-4","url":null,"abstract":"<p>Here, we report the synthesis of Sm³⁺- activated Ca₈ZnBi(VO₄)₇ nanophosphors using the easy, economic, and time-saving urea-aided solution combustion method. The fabricated powder samples that were annealed at 900 °C were examined for their structural, morphological, and optical characteristics. By recording the X-ray diffraction pattern, R3c (161), the space group and the trigonal phase of synthesized phosphor, was verified. Using X-ray energy-dispersive spectroscopy and scanning electron microscopy, the morphology and elemental composition of the phosphors were examined. Using a transmission electron microscope (TEM), the fabricated nanophosphor particle size was examined. A TEM image demonstrates the occurrence of uneven particle agglomeration in the nanoscale range. The synthesized phosphors’ excitation, emission spectra were captured to examine their photoluminescence (PL) behavior. We observed characteristic reddish-orange Sm³⁺ PL emission when the produced Ca₈ZnBi (VO₄)₇ phosphors material was exposed to UV light at 408 nm, this corresponded to the transition ⁴G_5/2 → ⁶H_7/2, at 605 nm, respectively. Dexter’s theory and the Inokuti–Hirayama (I–H) model were used to confirm that the energy migration among neighbor ions is found to be responsible for concentration quenching and 5 mol % is found to be the optimal concentration of dopant ion. Using the diffuse reflectance (DR) spectrum, the Eg (bandgap) values for Ca₈ZnBi(VO₄)₇ (3.18 eV) and Ca₈ZnBi_0.95Sm_0.05(VO₄)₇ (3.15 eV) were determined. In addition, a detailed evaluation was conducted on the quantum efficiency (64.74 %), radiative lifetime (0.6329 ms), and color coordinates (0.6522,0.3476). These astounding outcomes demonstrated the synthesized nanomaterials suitability for creating wLEDs, inherent fingerprinting, and other photophysical claims.</p>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142210194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced sensitivity of fluorescence-based optical CO2 sensor by using HPTS/Chitosan/ZnO/GO/polymethyl methacrylate composites","authors":"Vedat Azrak, Özlem Öter, Sibel Oğuzlar, Elif Ant Bursalı","doi":"10.1007/s10854-024-13455-x","DOIUrl":"https://doi.org/10.1007/s10854-024-13455-x","url":null,"abstract":"<p>This study was deeply focused on developing a novel gaseous CO₂ sensor based on the emission-based response of HPTS in polymethyl methacrylate/chitosan/ZnO/GO composites. HPTS is a well-known fluorescent dye that possesses a decreasing luminescence intensity at 520 nm to CO₂. The ion-pair form of the HPTS was used in different composites either in thin film and fiber form. Chitosan has received important attention due to its structural characteristics such as being biocompatible, biodegradable, cost-effective, non-toxic polymer, and its suitability for gas storage. It is a biopolymer having amine-rich groups which is appropriate especially for CO₂ adsorption purposes. Thus, we have employed chitosan and/or zinc oxide/graphene oxide for the first time either in solid or dissolved forms in the concerned polymethyl methacrylate based matrices for enhancing CO₂ sensitivity. The best results were obtained for the optimum concentration of chitosan containing thin film sensor slides which exhibited 75 times higher sensitivity than the ones which do not contain any chitosan. The addition of ZnO/GO composite revealed a 14% enhancement in the sensor response and it facilitated the fiber sensor formation by electrospinning process due to its increasing effect of electrical conductivity.The HPTS/Chitosan/ZnO/GO/polymethyl methacrylate sensing composites were stable for long periods that no significant changes in the fluorescence intensity and sensor characteristics were observed over 20 months.</p>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142210201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Overview of analysis on thermal stability and Hirshfeld surface of sodium sulphamate single crystals","authors":"N. Sarkar, Kiran, N. Vijayan, Divyansh Joshi","doi":"10.1007/s10854-024-13412-8","DOIUrl":"https://doi.org/10.1007/s10854-024-13412-8","url":null,"abstract":"<p>Here, we describe the growth of a needle-shaped single crystal of sodium sulphamate through the slow evaporation solution technique. The resultant crystal structure was meticulously confirmed using X-ray diffraction and Fourier transform infrared spectroscopy. Thermal analysis serves as a unique fingerprint for materials, offering distinct characteristics for identification and characterization. The distinctive thermal responses and stability of the titled compound were evaluated through thermogravimetry, differential thermal analysis, and derivative thermogravimetry (DTG). Thermal analysis helps in studying the degradation of materials, which is important for understanding their environmental impact and lifecycle. DTG curves were adeptly employed within this analysis framework to determine activation energy using a linear plotting approach. For deeper insights into intermolecular interactions, Hirshfeld surface computations were carried out using the Crystal Explorer software. Hirshfeld surfaces provide a visual and quantitative way to analyse and understand intermolecular interactions within a crystal structure. This exploration provides a window into the material’s inherent bonding dynamics.</p>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142210156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optical and structural characterization of chemical components of Calotropis procera on semi-organic single crystal","authors":"S. Renugadevi, G. V. Vijayaraghavan, H. Mohamed Mohaideen, Ranjith Balu","doi":"10.1007/s10854-024-13406-6","DOIUrl":"https://doi.org/10.1007/s10854-024-13406-6","url":null,"abstract":"<p>Semi-organic single crystal of Erukkum Poo <i>(Calotropis procera)</i>-mediated urea-doped potassium hydrogen phthalate (KUE) were developed using a slow evaporation technique. The Structural analysis confirmed the orthorhombic shape and space group <i>Pca21</i>, as well as the lattice parameters <i>a</i> = 9.65 Å, <i>b</i> = 13.37 Å, <i>c</i> = 6.49 Å, and <i>α </i>= <i>β</i> = <i>γ</i> = 90° of the formed crystal. The mean size of the crystallite and microstrain of the material were determined and associated through the Debye–Scherrer, Williamson-Hall, along with size-strain plot methods. The FTIR spectrum indicates the existence of the main functional groups, with slight distortion attributed to the dopants. An analysis using UV–vis revealed that the produced crystallized substance had a lowered cut-off wavelength of 270 nm and a band gap of 4.7 eV. A nonlinear optical investigation found that the SHG efficiency is 3.2 times greater than that of KHP. The dielectric properties of the material were tested at room temperature over a frequency range of 50 Hz to 5 MHz. There was a hopping of localized charge carriers and an exponential drop in the dielectric constant and dielectric loss with increasing frequency. The outcomes of the experiment exhibit the KUE crystal potential for photonics applications.</p>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142210157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Controllable synthesis of BiVO4 photocatalysts with distinct morphology toward different dyes degradation in the presence of peroxydisulfate","authors":"Meng Tang, Lijia Zheng, Ming Ge","doi":"10.1007/s10854-024-13464-w","DOIUrl":"https://doi.org/10.1007/s10854-024-13464-w","url":null,"abstract":"<p>BiVO₄ photocatalysts with distinct morphology were solvothermally prepared by regulating the pH of precursor solution. The physicochemical properties of BiVO₄ catalysts were characterized using XRD, SEM, EDS, FT-IR and UV-Vis DRS. With the assistance of peroxydisulfate (PDS), as-obtained BiVO₄ could effectively degrade the cationic dye rhodamine B (RhB) and the anionic dye methyl orange (MO) under visible-LED-light illumination. RhB degradation obeys the first-order kinetic, while MO degradation complies with the second-order kinetic. Short stick-like BiVO₄ (named as BiVO₄-1) showed the best RhB degradation efficiency, and sheet-like BiVO₄ (named as BiVO₄-9) had the highest MO degradation rate. The influence of some important operating factors (PDS dose, BiVO₄ dosage, temperature, inorganic anions and humic acid) on the degradation of RhB and MO were discussed. In the BiVO₄-1/PDS/Vis system, the free radical pathway (O₂^•‒, SO₄^•‒, •OH) and the non-radical pathway (¹O₂ and h⁺) acted together to realize the degradation of RhB; however, in the BiVO₄-9/PDS/Vis system, MO degradation was mainly dominated by the non-radical oxidation pathway (¹O₂ and h⁺).</p>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142210199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Two-dimensional/one-dimensional SnSe2/CNT heterostructure as a photo-detector and its improved photo-responsiveness","authors":"Mohit Tannarana, Pratik Pataniya, G. K. Solanki","doi":"10.1007/s10854-024-13385-8","DOIUrl":"https://doi.org/10.1007/s10854-024-13385-8","url":null,"abstract":"<p>The present study reports the fabrication of a resistive device using SnSe₂/CNT nanohybrids with improved photo-responsiveness. The sono-chemical exfoliation method has been used to synthesize SnSe₂ nanosheets. The SnSe₂/CNT nanohybrid is prepared in the 70–30 weight (%) by a simple mixing-stirring process. The prepared nanocomposite is deposited on ITO/glass substrate and exploited for photo-detection application. SnSe₂/CNT photo-detector is studied under polychromatic white light illumination with varying power intensity under atmospheric conditions and in vacuum. The photo-detector shows excellent responsivity of 0.81 A/W for white light illumination with fast switching of nearly 0.7 ms. Low-temperature stability has also been studied for the temperature range 300–200 K for 760-nm laser light illumination. The responsivity of 0.52 A/W is obtained at 300 K for laser illumination. The detector gives significantly good stability and photocurrent even at 200 K. The durability test of the photo-detector is studied for &gt; 125 on–off cycles under 80 mW/cm² polychromatic radiation. Detector exhibits excellent photo-response at different atmospheric conditions as well as temperature. As high-performance optoelectronics, the application of SnSe₂/CNT-based photo-detector opens a new pathway in the application of 2D–1D heterostructure.</p>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142210198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrical and magnetic properties of double perovskite Y2-xCaxCoMnO6 (x = 0.1, 0.2, 0.5)","authors":"Dheeraj Kumar, Mohd Alam, Prajyoti Singh, Srishti Dixit, A. K. Ghosh, Sandip Chatterjee","doi":"10.1007/s10854-024-13399-2","DOIUrl":"https://doi.org/10.1007/s10854-024-13399-2","url":null,"abstract":"<p>The crystal structure, electronic, magnetic, and transport properties of the hole substituted (Ca²⁺) and partially B-site disordered double perovskite Y_2-xCa_xCoMnO₆ system are studied. At room temperature, the samples demonstrated a monoclinic perovskite structure with a space group P2₁/n which was confirmed by Rietveld refinement of X-ray diffraction data. Ultra-violet visible analysis of these samples shows a direct band gap including gap energy near about 1.50 eV. X-ray photoemission spectroscopy measurement shows that component Co and Mn ions exist in a mixed state (Co³⁺, Co²⁺, Mn³⁺, and Mn⁴⁺). All samples exhibit semiconducting/insulating, and electrical conduction can be explained by Mott’s 3-D variable range hopping and small polaron hopping fitting. The magnetization numerical value decreases observed with increases in Ca concentration appears to be caused by increases in antiferromagnetic (AFM) phases. The double perovskite Y_1.9Ca_0.1CoMnO₆ and Y_1.8Ca_0.2CoMnO₆ show ferromagnetic transition at transition temperatures T_c~ 70 K and T_c~ 68 K, respectively. The analysis of the samples’ zero fields cooled DC magnetic susceptibility as a function of temperature reveals Griffiths-like singularity features that arise as the concentration of Ca increases in the parent system. The Griffith-like phase exists in the sample Y-site with Ca-substitution is independent of the structural disorder caused by the John–Teller active Mn³⁺ions in sample <span>({text{Y}}_{1.5} {text{Ca}}_{0.5})</span>CoMnO₆. Field-dependent magnetization shows meta-magnetic behavior at low-temperature regions in Y_1.9Ca_0.1CoMnO₆ and Y_1.8Ca_0.2CoMnO₆. As the concentration of Ca increased from Y_1.8Ca_0.2CoMnO₆ to Y_1.5Ca_0.5CoMnO₆ meta-magnetic behavior disappeared.</p>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142210197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced magnetic anisotropy in structure, static, and dynamic magnetic properties for Ba3−xLaxCo2Fe24O41 hexaferrites","authors":"Yanlin Ma, Jie Li, Yida Lei, Kui Liu, Yang Xiao, Lei Liu, Yingli Liu, Zhiyong Zhong","doi":"10.1007/s10854-024-13422-6","DOIUrl":"https://doi.org/10.1007/s10854-024-13422-6","url":null,"abstract":"<p>Co₂Z is a planar ferrite, particularly suitable for soft magnetic applications. There is currently a lack of in-depth research on its high-frequency properties. La³⁺ ion is a potential ion to regulate its magnetism. Based on this, the crystal structure, microstructure, static, and dynamic magnetic properties of Ba_3−<i>x</i>La_<i>x</i>Co₂Fe₂₄O₄₁ (<i>x</i> = 0.0, 0.05, 0.1, 0.15, 0.2, and 0.25) ceramics were investigated. The findings demonstrate that La substitution retains the crystal structure and form, yet the introduction of extra charge leads to the formation of Fe²⁺ ions, resulting in a slight decrease in magnetic moment from 51.9 to 48.9 emu/g, while a notable increase in the out-of-plane anisotropic field from 12.2 to 18.3 kOe, which significantly impacts the high-frequency complex magnetic permeability spectrum. Additionally, a thorough analysis of the high-frequency magnetic spectrum indicates that both domain wall movement and magnetization rotation contribute to the magnetic permeability, with magnetization rotation playing predominant. Particularly exciting is that the high-frequency magnetic spectrum results show that the substitution of La for Ba considerably raises the resonance frequency from 2.41 to 3.30 GHz that can be attributed to the increased anisotropy. In conclusion, the substitution of La markedly enhances the high-frequency magnetic properties of Co₂Z.</p>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142227777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comprehensive study on structural, morphological, elemental, optical and magnetic properties of cobalt ferrite-manganese oxide nanocomposites for enhanced photocatalytic application","authors":"Dheeraj Yadav, Rajni Shukla","doi":"10.1007/s10854-024-13367-w","DOIUrl":"https://doi.org/10.1007/s10854-024-13367-w","url":null,"abstract":"<p>This study presents the synthesis and comprehensive characterisation of Cobalt Ferrite-Manganese Oxide (CoFe₂O₄–Mn₂O₃) nanoparticles and their composites, aiming to explore their potential as effective photocatalysts for the degradation of methylene blue dye. The pure CoFe₂O₄ and Mn₂O₃ nanoparticles were successfully synthesized via the coprecipitation method, while the composites were fabricated using the sonochemical method. The synthesized materials were thoroughly characterized using various techniques, including X-ray Diffraction (XRD) analysis that confirmed the formation of crystalline CoFe₂O₄ and Mn₂O₃ nanoparticles with desired phase and high purity. Fourier transform infrared spectroscopy (FTIR) provided valuable information on the chemical bonding and functional groups present in the samples. Field emission scanning electron microscopy (FESEM) imaging exhibited the morphology and size distribution of the nanoparticles, while Energy-dispersive X-ray spectroscopy (EDS) analysis confirmed the elemental composition. Ultraviolet–visible (UV–Vis) spectroscopy revealed the optical properties of the materials, suggesting potential photocatalytic applications. Vibrating sample magnetometer (VSM) measurements demonstrated the magnetic properties of synthesized material, which could be advantageous for magnetic separation during the photocatalysis process. The photocatalytic performance of the material was evaluated in the degradation of methylene blue under UV light irradiation.</p>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142226749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of the structural, morphological, optical, and electrical properties of thin films: application of effective medium theories to CdO/Co3O4 composites","authors":"A. Neffah, H. Tabet-Derraz, M. A. Benali, K. M. E. Boureguig, M. Z. Belmehdi, H. Saci","doi":"10.1007/s10854-024-13392-9","DOIUrl":"https://doi.org/10.1007/s10854-024-13392-9","url":null,"abstract":"<p>Thin films of cadmium oxide (CdO), cobalt oxide (Co₃O₄), and their composites were deposited on glass substrates at 360 ℃ using the spray pyrolysis method. The films underwent characterization through various techniques, including energy-dispersive X-ray spectroscopy (EDX), scanning electron microscope (SEM), X-ray diffraction (XRD), and ultraviolet–visible spectroscopy (UV–Vis). Hall Effect measurements were also conducted to assess the structural, optical, and electrical properties. The XRD analysis revealed crystalline structures with cubic symmetry for both CdO and Co₃O₄, and the Scherrer equation confirmed their nanomaterial nature. EDX results identified the distinct proportions of oxygen, cadmium, and cobalt in the films. On the other hand, the optical band gaps determined via Tauc plots indicated values of Eg1 = 1.54 eV and Eg2 = 2.01 eV for Co₃O₄, and Eg3 = 2.4 eV for CdO. As for the Hall Effect measurements, they were performed to determine a number of electrical parameters. The results showed that the addition of Co₃O₄ into CdO increased the sheet resistance of the composite. This research has potential applications in various areas, including the design of solar cells (photovoltaic devices) and the creation of new light-based devices (optoelectronic devices). Additionally, the dielectric functions of composites (CdO)_x (Co₃O₄)_1-x with varying compositions (<i>x</i> = 0.7, 0.5, and 0.3) were evaluated. The dielectric properties were experimentally measured from 350 to 2500 nm, and theoretical calculations were performed using mixing equations like Looyenga, Kim, and Bruggman, with the Looyenga model accurately depicting the dielectric properties of the materials studied.</p>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142226750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}