Results in Physics最新文献

{"title":"Probing photonic spin Hall effect with Fizeau drag in graphene","authors":"Rafi Ud Din ,&nbsp;Muzamil Shah ,&nbsp;Hazrat Ali ,&nbsp;Saeed Haddadi","doi":"10.1016/j.rinp.2024.107987","DOIUrl":"10.1016/j.rinp.2024.107987","url":null,"abstract":"<div><div>Graphene is of particular interest in optoelectronics due to its remarkable transport properties. We analyze the photonic spin Hall effect (PSHE) of a light beam reflected from a layered structure of graphene in its current-carrying state. The relativistic effects arising due to the motion of massless Dirac electrons in graphene greatly influence the transverse displacements of light induced by PSHE. The mentioned effect is studied with different drifting speeds of the charged particles in graphene as well as different thicknesses of the graphene sheet. The substrate on which the graphene is deposited is also shown to play a vital role in manipulating this relativistic PSHE. This study provides a platform for efficient light-matter interaction in which the medium is a current-carrying graphene channel.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"65 ","pages":"Article 107987"},"PeriodicalIF":4.4,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142327766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nanocrystallization and precipitation behavior evolution of AZ80 magnesium alloy during multi-directional compression","authors":"Jinlong Zhang,&nbsp;Chen Wang,&nbsp;Maosen Zhao,&nbsp;Hao Li,&nbsp;Jiaxiong Zhao","doi":"10.1016/j.rinp.2024.107992","DOIUrl":"10.1016/j.rinp.2024.107992","url":null,"abstract":"<div><div>In response to the growing demand for high-performance magnesium alloys in the aerospace and transportation industries, researchers conducted a study on the AZ80 magnesium alloy. The primary objective was to achieve a nanocrystalline structure in the alloy through severe plastic deformation using low-strain multi-directional compression at room temperature. Subsequently, an aging treatment was performed to induce the transformation of the structure into a stable state. The study aimed to investigate the morphology and mode of the second phase precipitation in the magnesium alloy after undergoing severe plastic deformation. The research findings revealed that the application of multi-directional and multi-pass compression during room temperature deformation of the magnesium alloy effectively prevented instability and fracture. Moreover, this process facilitated the accumulation of larger true strain. As the number of compression passes increased, deformation twins became increasingly denser, particularly in the intersecting areas. Consequently, ultrafine high-angle grain structures were preferentially formed in these regions. Furthermore, the number of fine-grained areas gradually increased with each deformation pass. After ΣΔε 5.12, the grain size was refined to a range of 100–200 nm. Additionally, the aging treatment following severe plastic deformation brought about a significant change in the traditional lamellar precipitation mode of the second phase Mg₁₇Al₁₂ in the magnesium alloy. Instead, spherical precipitation occurred.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"65 ","pages":"Article 107992"},"PeriodicalIF":4.4,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142319309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dispersion-free characterization of terahertz slab–waveguide modal confinement based on a metal Bragg grating structure","authors":"Borwen You ,&nbsp;Che-Chu Hsieh ,&nbsp;Ryuji Iwasa ,&nbsp;Hung-Yi Tsai ,&nbsp;Yen-Shan Lin ,&nbsp;Liang-Cheng Yu ,&nbsp;Pin-Jung Lu ,&nbsp;Shiun-Yun Chang ,&nbsp;Yuan-Chi Wu","doi":"10.1016/j.rinp.2024.107988","DOIUrl":"10.1016/j.rinp.2024.107988","url":null,"abstract":"<div><div>Photonic waveguide structures that use periodic metal grooves and periodically perforated metal slits (PPMSs) can laterally confine Sommerfeld and Zenneck surface waves of metals with the electric field accumulation among metal interspaces in the terahertz (THz) region, instead of the total internal reflection principle of dielectric slab media. For the efficiency enhancements of THz-wave coupling and slab–waveguide confinement, specific integrators with high refractive indices or specified for input angles of transverse magnetic polarized waves, such as prisms, metal blades, and waveguides, are requested to excite spoof surface plasmons in the THz region. However, the integrator-assembled slab–waveguides encounter challenges of THz pulse-wave communication in compact and low-distortion systems. A resonant waveguide grating structure based on PPMSs is experimentally demonstrated to confine THz lateral waves from the plane-wave radiation in free space. The open frame and periodic metal cavities of PPMSs can work as a slab–waveguide to transmit structural confined waveguide modes with forwarding evanescent waves of Fabry–Pérot resonance. For 0.1–1 THz waves, the short wavelengths that are both less than half the metal slit width and 3.75 times the metal thickness can lead to zero dispersion and the highest confinement factor in a slab–waveguide for PPMS-confined THz waves. This behavior is opposite to the high structural dispersion in confined THz waves of surface plasmonic devices.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"65 ","pages":"Article 107988"},"PeriodicalIF":4.4,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142322174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Phase diagram of the Hubbard chain with symmetric density-dependent hopping","authors":"Xin Sun ,&nbsp;Weiting Chen ,&nbsp;Hanqin Ding","doi":"10.1016/j.rinp.2024.107983","DOIUrl":"10.1016/j.rinp.2024.107983","url":null,"abstract":"<div><div>By the bosonization and renormalization-group schemes, a half-filled Hubbard chain with density-dependent hopping is investigated at weak coupling. The model involved has an electron–hole symmetry and an SO(4) symmetry. The phase diagram consists of three different phases divided by a charge transition at on-site repulsion <span><math><mrow><mi>U</mi><mo>=</mo><msub><mrow><mi>U</mi></mrow><mrow><mi>c</mi></mrow></msub></mrow></math></span> and a spin transition at <span><math><mrow><mi>U</mi><mo>=</mo><msub><mrow><mi>U</mi></mrow><mrow><mi>s</mi></mrow></msub></mrow></math></span>, with <span><math><mrow><msub><mrow><mi>U</mi></mrow><mrow><mi>s</mi></mrow></msub><mo>=</mo><mo>−</mo><msub><mrow><mi>U</mi></mrow><mrow><mi>c</mi></mrow></msub><mo>=</mo><mfrac><mrow><mn>16</mn></mrow><mrow><mi>π</mi></mrow></mfrac><mrow><mo>(</mo><msub><mrow><mi>t</mi></mrow><mrow><mi>c</mi></mrow></msub><mo>−</mo><mn>1</mn><mo>)</mo></mrow></mrow></math></span>, including a Mott insulator with the SDW correlation, a dimerized insulator with the BCDW correlation, and a Luttinger metal with the coexisting TS and BSDW correlations. The effective three-body repulsion (<span><math><mrow><msub><mrow><mi>t</mi></mrow><mrow><mi>c</mi></mrow></msub><mo>−</mo><mn>1</mn><mo>&gt;</mo><mn>0</mn></mrow></math></span>) and attraction (<span><math><mrow><msub><mrow><mi>t</mi></mrow><mrow><mi>c</mi></mrow></msub><mo>−</mo><mn>1</mn><mo>&lt;</mo><mn>0</mn></mrow></math></span>) induce the dimerized and metallic phases, respectively.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"65 ","pages":"Article 107983"},"PeriodicalIF":4.4,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142322194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Facile co-precipitation synthesis of nano-molybdenum-doped BaO nanoparticles and their physical characterization","authors":"Marriam Zaqa ,&nbsp;Numan Abbas ,&nbsp;Sohail ,&nbsp;Jingbo Zhang ,&nbsp;R.X. Cao ,&nbsp;X.H. Zeng ,&nbsp;Eman Y.A. Musa ,&nbsp;Zhong Wang ,&nbsp;Chi Wang ,&nbsp;Guoqing Wu ,&nbsp;Qiuliang Wang","doi":"10.1016/j.rinp.2024.107979","DOIUrl":"10.1016/j.rinp.2024.107979","url":null,"abstract":"<div><div>Alkaline metal oxides have received significant attention recently due to their abundance, inherent conductivity, optical absorption, and thermal stability. Here, a straightforward co-precipitation method was employed to obtain both undoped BaO and Mo-doped BaO nanoparticles. Various techniques were used to characterize the synthesized nanoparticles’ structural, Raman spectral, optical, thermal, and electrical properties. X-ray diffraction (XRD) results revealed that Mo was successfully doped into tetragonal nanocrystalline BaO. The W-H plot showed that as Mo doping increases from 2 % to 6 %, the crystallite size grows while the lattice structure remains well-ordered with even strain distribution. Scanning electron microscopy (SEM) was used to examine its surface features. The purity and crystalline character of the samples were further confirmed via Raman spectroscopy, which shows that the peak intensity of the spectra increases with the increase of particle size owing to the rise in the force constant. UV spectroscopy was used to observe the energy band gap, which is found to decrease from 4.2 eV to 3.8 eV, and then it drops to 3.4 eV as the Mo content increases. This is reasonable because of the size-dependent attraction between metallic ions and conduction electrons. PL spectra concluded that Mo doping leads to the enhancement of the optical characteristics of BaO. Adding Mo to BaO also modifies the material’s thermal properties, potentially affecting its suitability for applications that require thermal durability. This finding exhibits that even slight doping of Mo⁴⁺ into BaO can significantly impact their structural, thermal, optical, and electrical characteristics. It enriches the existing body of knowledge of BaO nanoparticles and lays the foundation for its future research.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"65 ","pages":"Article 107979"},"PeriodicalIF":4.4,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2211379724006648/pdfft?md5=fba97975a17813173ad5e853ffc16a99&pid=1-s2.0-S2211379724006648-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142310780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ultra-broadband Photodetectors Based on Formamidinium Lead Iodide Quantum Dots","authors":"Che-Wei Chang ,&nbsp;Yu-Hung Chen ,&nbsp;Yu-Cheng Zhang ,&nbsp;Kuan-Yu Ke ,&nbsp;Kasimayan Uma ,&nbsp;Zong-Liang Tseng","doi":"10.1016/j.rinp.2024.107964","DOIUrl":"10.1016/j.rinp.2024.107964","url":null,"abstract":"<div><p>Near-infrared photodetectors were fabricated by incorporating formamidinium lead iodide (FAPbI₃) quantum dots (QDs) as the light-harvesting layer. Through systematic optimization of the device architecture, high device performance was achieved by utilizing PCBM as the electron transport material and a 50 nm-thick TAPC film as the hole transport layer. The energy level alignment between PCBM and the FAPbI₃ QDs enabled efficient exciton dissociation and hole blocking, while the optimized TAPC thickness decrease current leakage pathways. The resulting photodetectors exhibited an impressive external quantum efficiency of 59.56 % at 750 nm, along with a high specific detectivity of 2.63 x 10¹¹ Jones. A broadband photoresponse from 300–900 nm was observed, as well as a fast temporal response with 30.58/31.26 μs rise/fall times. A substantial linear dynamic range of 61.5 dB was achieved under 780 nm illumination. Furthermore, the low dark current densities facilitated by the judiciously selected materials and thicknesses contributed to the excellent overall device performance. The device performance of the PCBM/FAPbI₃ QDs/TAPC system demonstrate its promising potential for near-infrared optoelectronic applications requiring high sensitivity, speed, and broad spectral response, opening up opportunities for further advances in photodetection as well as other relevant device technologies.</p></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"65 ","pages":"Article 107964"},"PeriodicalIF":4.4,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2211379724006491/pdfft?md5=c73b543248622803cbe75c638abd4695&pid=1-s2.0-S2211379724006491-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142271452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An ab initio study to investigate the physical properties of CsEuX3 (X=Cl, Br, and I) using different Exchange-Correlation potentials","authors":"Anas Y. Al-Reyahi ,&nbsp;Said M. Al Azar ,&nbsp;Saber Saad Essaoud ,&nbsp;Mohammed Elamin Ketfi ,&nbsp;Mufeed Maghrabi","doi":"10.1016/j.rinp.2024.107980","DOIUrl":"10.1016/j.rinp.2024.107980","url":null,"abstract":"<div><p>Several exchange–correlation potentials within the framework of Density Functional Theory (DFT) were used to study the structural, electronic, magnetic, optical, and thermoelectric properties of cubic perovskites CsEuX₃ (X=Cl, Br, and I). The exchange–correlation potentials used in this study include GGA, mBJ, and GGA+U, both with and without spin–orbit coupling (SOC). The stability of all compounds was confirmed by the obtained values of the cohesive energy, formation energy, and tolerance factor. When GGA+U with SOC is used, all compounds show direct bandgap with no effect of the spin state on the bandgap value. The bandgap varies differently for spin-up and spin-down states under pressure. Europium ions control the magnetic properties. Optical investigations indicate that CsEuBr₃ and CsEuI₃ exhibit identical characteristics, whereas CsEuCl₃ has a similar trend but shifted to higher<!--> <!-->energy. Absorption mostly takes place in the<!--> <!-->UV<!--> <!-->region, whereas there is about 20 % reflectance in the infrared (IR) and visible regions. All compounds have low<!--> <!-->energy loss and excellent transparency. Our investigation indicates that the present compounds are good thermoelectric materials with a high figure of merit. For example, CsEuCl₃ demonstrates a figure of merit (ZT) ranging from 0.82 to 0.86 for spin-up and around 1 for spin-down over the temperature range 50–800 K. Such encouraging results indicate that all compounds are potential candidates for optical applications and thermoelectric devices.</p></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"65 ","pages":"Article 107980"},"PeriodicalIF":4.4,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S221137972400665X/pdfft?md5=85589e8111e52ba2bd51659aaf711a38&pid=1-s2.0-S221137972400665X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142271450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A photonic integrated chip for distinguishing the optical wave packets based on a neural-network","authors":"Chu-En Lin ,&nbsp;Ya-Fan Chen ,&nbsp;Ching-Pao Sun ,&nbsp;Chii-Chang Chen","doi":"10.1016/j.rinp.2024.107982","DOIUrl":"10.1016/j.rinp.2024.107982","url":null,"abstract":"<div><div>In this work, we use an optical-neural network to recognize a series of optical triangular and square wave packets. This chip is designed based on the reservoir computing, consisting of the directional couplers, phase shifters, Mach-Zehnder modulators, spiral waveguide and grating couplers. The non-linear activation function is obtained by the directional couplers. The optimization of the optical reservoir computing system is performed by tuning the voltage on the phase shifters to obtain the largest extinction ratio of the output signals for different input wave packets. The photonic integrated chip is fabricated on silicon-on-insulator and is characterized at an operation frequency of 3 GHz. The results demonstrate that the photonic integrated chip can efficiently distinguish between optical triangular and square wave packets.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"65 ","pages":"Article 107982"},"PeriodicalIF":4.4,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2211379724006673/pdfft?md5=09ab2ea62dd5fd6a7179b14016e84f49&pid=1-s2.0-S2211379724006673-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142310783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quasi-three-level continuous wave Nd:Na2La4(WO4)7 lasers at 0.9 μm","authors":"Chu Chu ,&nbsp;Yongliang Li ,&nbsp;Chong Chen ,&nbsp;Hailong Feng ,&nbsp;Haoran Guo","doi":"10.1016/j.rinp.2024.107984","DOIUrl":"10.1016/j.rinp.2024.107984","url":null,"abstract":"<div><div>A diode-pumped continuous wave (CW) Nd:Na₂La₄(WO₄)₇ (Nd:NLW) laser operating at 0.9 μm on ⁴F_3/2 → ⁴I_9/2 transition was demonstrated. Four single- wavelengths (the 889 nm and 912 nm in σ-polarization, the 890 nm and 905 nm in π-polarization) were obtained by rotating an intracavity birefringent filter (BF).</div><div>At an absorbed pump power of 17.4 W at 808 nm, the highest output power of single-wavelength at 912 nm was 3.4 W. Furthermore, the dual-wavelength at 889 and 912 nm in σ-polarization and the dual-wavelength at 890 and 905 nm in π-polarization were also achieved, respectively. At an absorbed pump power of 17.4 W, the maximum total output powers of the dual-wavelengths at 889 and 912 nm was 2.12 W. To the best of our knowledge, this is the first quasi-three-level Nd:NLW laser operating at 0.9 μm.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"65 ","pages":"Article 107984"},"PeriodicalIF":4.4,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2211379724006697/pdfft?md5=16cec6a8131fba7f0fd480d505a3f828&pid=1-s2.0-S2211379724006697-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142310782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced thermoelectric properties of Ag2Se by manipulation in carrier concentration via acetylene carbon black nanocomposites","authors":"Dulyawich Palaporn ,&nbsp;Ploychanok Iadrat ,&nbsp;Tarabordin Yurata ,&nbsp;Chuchawin Changtong ,&nbsp;Supree Pinitsoontorn","doi":"10.1016/j.rinp.2024.107967","DOIUrl":"10.1016/j.rinp.2024.107967","url":null,"abstract":"<div><p>Pristine Ag₂Se has inherent limitations in its Seebeck coefficient and electronic thermal conductivity, necessitating improvements through carrier concentration manipulation. While its porous structure has been utilized to reduce carrier concentrations, achieving optimal values remains challenging. This study explores enhancing Ag₂Se with acetylene carbon black (ACB) nanocomposites to further reduce carrier concentrations and improve thermoelectric (TE) properties. ACB, a cost-effective alternative to other carbon materials, has demonstrated potential in enhancing TE performance in various composites. Ag₂Se and ACB composites were synthesized by dispersing different ACB weights in a solution, followed by sintering. Characterization using x-ray diffraction (XRD), Transmission and scanning electron microscopy (TEM and SEM), and other techniques confirmed the phase, structure, and morphology of the composites. The addition of ACB resulted in decreased electrical conductivity and increased Seebeck coefficient in Ag₂Se, particularly at ACB concentrations up to 5.0 wt%, balancing the power factor (<em>PF</em>). The total thermal conductivity decreased due to mainly reduced electronic thermal conductivity. The 5.0 wt% ACB sample achieved a <em>zT</em> of approximately 0.8 at 383 K, comparable to the performance of composites using more expensive low-dimensional carbon materials.</p></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"65 ","pages":"Article 107967"},"PeriodicalIF":4.4,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2211379724006521/pdfft?md5=1572026d2dab6fdef0effeba11bb739c&pid=1-s2.0-S2211379724006521-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142271449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}