检索结果-内蒙古大学图书馆

Unveiling the mechanism of non-conventional superconductivity through material genome engineering

Frontiers of physics 2022年第3期17卷 7-8页

作者： X.-D.Xiang Department of materials science and engineering and department of physicssouthern university of science and technologyshenzhen 518055china

Studying the complexity of the electronic phase diagram is at the heart of understanding strongly correlated system in general,with high Tc superconductors as the most known *** temperature superconductivity has a wide range of application potentials in power transmission,nuclear magnetic resonance,magnetic levitation transportation,aerospace,information and communication technologies,*** its mechanism remains a long-standing challenge,due to its complex material structures and interlays among different phases such as charge density wave,antiferromagnetic and superconducting *** a result,this has greatly hindered its further development.

关键词： mechanism superconductivity magnetic

来源：评论

学校读者我要写书评

暂无评论

Fullerene-derived boron-doped defective nanocarbon for highly selective H_(2)O_(2) electrosynthesis

引用

Nano Research 2024年第3期17卷 1217-1224页

作者： Wangqiang Shen Chang Zhang Muneerah Alomar Zhiling Du Zepeng Yang Junjie Wang Guangqing Xu Jian Zhang Jun Lv Xing Lu School of Materials Science and Engineering Hefei University of TechnologyHefei 230009China School of Energy and Environmental Hebei University of EngineeringHandan 056038China School of Materials Science and Engineering Huazhong University of Science and TechnologyWuhan 430074China Department of Physics College of SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh 11671Saudi Arabia

Electrochemical production of hydrogen peroxide(H_(2)O_(2))via the two-electron(2e-)pathway of oxygen reduction reaction(ORR)supplies an auspicious alternative to the current industrial anthraquinone ***,it still lacks efficient electrocatalysts to achieve high ORR activity together with 2e-selectivity ***,a boron-doped defective nanocarbon(B-DC)electrocatalyst is synthesized by using fullerene frameworks as the precursor and boric oxide as the boron *** obtained B-DC materials have a hierarchical porous structure,befitting boron dopants,and abundant topological pentagon defects,exhibiting a high ORR onset potential of 0.78 V and a dominated 2e-selectivity(over 95%).Remarkably,when B-DC electrocatalyst is employed in a real device,it achieves a high H_(2)O_(2) yield rate(247 mg·L^(-1)·h^(-1)),quantitative Faraday efficiency(~100%),and ultrafast organic pollutant degradation *** theoretical calculation reveals that the synergistic effect of topological pentagon defects and the incorporation of boron dopants promote the activation of the O_(2) molecule and facilitates the desorption of oxygen *** finding will be very helpful for the comprehension of the synergistic effect of topological defects and heteroatom dopants for boosting the electrocatalytic performance of nanocarbon toward H_(2)O_(2) production.

关键词： fullerene electrochemical hydrogen peroxide production oxygen reduction reaction carbon nanomaterials

来源：评论

学校读者我要写书评

暂无评论

Insights into high electric-field-induced strain in BiAlO_(3)modified Bi_(1/2)Na_(1/2)TiO_(3)films

引用

Journal of Advanced Ceramics 2025年第3期14卷 29-38页

作者： Muhammad Sheeraz Sung Sik Won Jong Pil Kim Sabir Ali Fazli Akram Hyoung-Su Han Bong Chan Park Tae Heon Kim Ill Won Kim Aman Ullah Chang Won Ahn Department of Physics and Energy Harvest Storage Research Center(EHSRC) University of UlsanUlsan 44610Republic of Korea Research Center Kairos Co.Ltd.Suwon 16229Republic of Korea Busan Center Korea Basic Science InstituteBusan 46742Republic of Korea Department of Physics University of Science and TechnologyBannu 28100Pakistan Center for High Technology Materials and the Department of Mechanical Engineering The University of New MexicoAlbuquerque 87131USA School of Materials Science and Engineering University of UlsanUlsan 44776Republic of Korea Electronic Materials Research Center Korea Institute of Science and TechnologySeoul 02792Republic of Korea

The development of high-strain piezoelectric materials has presented a longstanding challenge,particularly in the development of high-strain polycrystalline lead-free piezoelectric thin *** this work,we present a strategy for customizing the electrostrain in lead-free thin films through phase transition *** this study,we achieved a high recoverable electrostrain in a Bi_(1/2)Na_(1/2)TiO_(3)–BiAlO_(3)(BNT–BA)*** accomplish this,ferroelectric BNT and BNT–BA films with identical thicknesses of 500 nm were fabricated on Pt(111)/TiO_(2)/SiO_(2)/Si(100)substrates via a sol-gel *** with the BNT film,the BNT–BA film exhibited a greater polarization response and superior field strength endurance,maintaining the energy storage density beyond the breakdown field strength of the *** BNT–BA film demonstrated a large unipolar strain of S=0.43%with a normalized strain(maximum strain/maximum applied electric field(S_(max)/E_(max)))of 203 pm/V,followed by an effective transverse piezoelectric coefficient(e∗31,f)of~2.48 C/m^(2),which was more than two times greater than the value obtained for BNT(i.e.,maximum strain/maximum applied electric field(S_(max)/E_(max))=72 pm/V and e^(∗)_(31,f)of~1.09 C/m^(2)).This high strain response in the BNT–BA film can be attributed to the electric-field-induced phase transition of the mixed(i.e.,cubic and rhombohedral)phases into rhombohedral and tetragonal phases(mainly the rhombohedral structure),which recover back to the original state when the electric field is *** findings suggest new pathways for achieving significant strain levels via alternative mechanisms,potentially enhancing the effectiveness and expanding the applications of piezoelectric materials.

关键词： electrostrain piezoelectrics Bi_(1/2)Na_(1/2)TiO_(3)(BNT) BiAlO_(3)(BA) thin films phase transition

来源：评论

学校读者我要写书评

暂无评论

Tailored BiVO_(4)/In_(2)O_(3)nanostructures with boosted charge separation ability toward unassisted water splitting

引用

Carbon Energy 2023年第6期5卷 45-59页

作者： Mi Gyoung Lee Jin Wook Yang Ik Jae Park Tae Hyung Lee Hoonkee Park Woo Seok Cheon Sol ALee Hyungsoo Lee Su Geun Ji Jun Min Suh Jooho Moon Jin Young Kim Ho Won Jang Department of Materials Science and Engineering Research Institute of Advanced MaterialsSeoul National UniversitySeoulRepublic of Korea Country Department of Applied Physics Sookmyung Women's UniversitySeoulRepublic of Korea Department of Materials Science and Engineering Yonsei UniversitySeoulRepublic of Korea Advanced Institute of Convergence Technology Seoul National UniversitySuwonRepublic of Korea

The development of new heterostructures with high photoactivity is a breakthrough for the limitation of solar-driven water ***,we first introduce indium oxide(In_(2)O_(3))nanorods(NRs)as a novel electron transport layer for bismuth vanadate(BiVO_(4))with a short charge diffusion ***_(2)O_(3)NRs reinforce the electron transport and hole blocking of BiVO_(4),surpassing the state-of-the-art photoelectrochemical performances of BiVO_(4)-based ***,a tannin-nickel-iron complex(TANF)is used as an oxygen evolution catalyst to speed up the reaction *** final TANF/BiVO_(4)/In_(2)O_(3)NR photoanode generates photocurrent densities of 7.1 mAcm^(−2) in sulfite oxidation and 4.2 mA cm^(−2) in water oxidation at 1.23 V versus the reversible hydrogen ***,the“artificial leaf,”which is a tandem cell with a perovskite/silicon solar cell,shows a solar-to-hydrogen conversion efficiency of 6.2%for unbiased solar water *** reveal significant advances in the photoactivity of TANF/BiVO_(4)/In_(2)O_(3)NRs from the tailored nanostructure and band structure for charge dynamics.

关键词： bismuth vanadate heterojunction indium oxide nanostructure photoelectrochemical water splitting

来源：评论

学校读者我要写书评

暂无评论

Nonlinear Hall effect on a disordered lattice

引用

Physical Review B 2024年第8期110卷 L081301页

作者： Rui Chen Z. Z. Du Hai-Peng Sun Hai-Zhou Lu X. C. Xie Department of Physics and Shenzhen Institute for Quantum Science and Engineering Department of Physics Shenzhen Key Laboratory of Quantum Science and Engineering Shenzhen 518055 China International Quantum Academy Shenzhen 518048 China Institute for Theoretical Physics and Astrophysics Shenzhen 518045 China International Center for Quantum Materials School of Physics Interdisciplinary Center for Theoretical Physics and Information Sciences (ICTPIS) Hefei National Laboratory Hefei 230088 China

The nonlinear Hall effect has recently attracted significant interest due to its potential as a promising spectral tool and for device applications. A theory of the nonlinear Hall effect on a disordered lattice is a crucial step towards explorations in realistic devices, but has not yet been addressed. We study the nonlinear Hall response on a lattice, which allows us to introduce strong disorder numerically. We reveal a disorder-induced Berry curvature that was not discovered in previous perturbation theories. The disorder-induced Berry curvature induces a fluctuation of the nonlinear Hall conductivity, which anomalously increases as the Fermi energy moves from the band edges to higher energies. More importantly, the fluctuation may explain those observations in recent experiments. We also find signatures of localization of the nonlinear Hall effect. This Letter shows a territory of the nonlinear Hall effect yet to be explored.

关键词： Hall effect Quantum transport Disordered systems Hall bar

来源：评论

学校读者我要写书评

暂无评论

Hierarchical nanostructure stabilizing high content coherent nanoprecipitates in Al-Cr-Fe-Ni-V high-entropy alloy

引用

Journal of materials science & Technology 2024年第33期200卷 61-68页

作者： Linjing Wang Yao Xiao Yang Ren Lu Wang Liang Wang Yunfei Xue School of Materials Science and Engineering Beijing Institute of TechnologyBeijing100081China Key Laboratory of Marine Materials and Related Technologies Zhejiang Key Laboratory of Marine Materials and Protective TechnologiesNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo315201China Department of Physics City University of Hong KongKowloonHong KongChina

High-density coherent nanoprecipitates have been widely introduced into the design of new structural materials to achieve a superior strength-ductility ***,the thermal instability of nanostructures limits their fabrication and *** this study,we investigated the temporal evolution of nanoprecipitates in coherent nanoprecipitation-strengthened Al_(0.5)Cr_(0.9)FeNi_(2.5)V_(0.2)high-entropy alloy during isothermal *** annealed at 600℃for more than 100 h,we found that its nanoprecipitates were invariably stable,with no obvious changes occurring in terms of morphology and *** excellent stability was mainly attributed to the restricted state of interface migration and diffusion owing to the hierarchical *** Cr-enriched nano-lamellar BCC phase divided the Cr-depleted FCC(L1_(2))matrix,forming barriers to long-range diffusion and resulting in a kinetically slow coarsening *** the nano-lamellar BCC phase spheroidized as the aging temperature increased to 700℃,the diffusion barriers were *** coarsening occurred after that,which further verified the significant effect of the nano-lamellar BCC phase on the microstructural *** results provide a paradigm for designing alloys stabilized via hierarchical nanostructure,achieving good strength-ductility synergy while excellent thermal stability.

关键词： High-entropy alloys Hierarchical nanostructure Microstructural stability

来源：评论

学校读者我要写书评

暂无评论

Lightweight foam-like nitrogen-doped carbon nanotube complex achieving highly efficient electromagnetic wave absorption

引用

Journal of materials science & Technology 2024年第1期168卷 114-123页

作者： Zongcheng Li Jin Liang Zhiheng Wei Xin Cao Jiahui Shan Chunwei Li Xiaoyi Chen Dong Zhou Ruizhe Xing Chunjia Luo Jie Kong MOE Key Lab of Materials Physics and Chemistry in Extraordinary Conditions Shaanxi Key Laboratory of Macromolecular Science and TechnologySchool of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Key laboratory of Flexible Electronics of Zhejiang Province Ningbo Institute of Northwestern Polytechnical UniversityNingbo 315103China Polymer Materials and Engineering Department School of Materials Science and EngineeringChang’an UniversityXi’an 710064China

With the increased electromagnetic wave(EMW)threat to military and human health,the develop-ment of EMW-absorbing materials is ***-organic framework derivatives containing magnetic nanoparticles and a carbon matrix are potential candidates for designing efficient EMW-absorbing ***,a zeolitic imidazolate framework-67(ZIF-67)-embedded three-dimensional melamine foam is pyrolyzed to afford carbon foam-based nitrogen-doped carbon nanotube composites,named 3D foam-like CoO/Co/*** CoO/Co particles are confined in the dielectric carbon nanotube *** carbon nanotubes provide considerable conductive loss,while CoO/Co magnetic particles are con-ducive to providing magnetic loss and adjusting impedance ***,the numerous defect structures introduced by heteroatomic doping(nitrogen)cause dipole polarization and simultaneously adjust impedance ***,the unique porous nanotube structure promotes multiple re-flections and scattering of EMWs,further optimizing impedance ***/Co/N-CNTs composites exhibit a minimum reflection loss of−52.3 dB at a matching thickness of 2.0 mm,while the correspond-ing effective absorption bandwidth is 5.28 GHz at a matching thickness of 2.2 *** study reports a novel approach to fabricating a lightweight high-performance EMW-absorbing material.

关键词： Lightweight porous carbon materials Carbon nanotubes CoO/Co magnetic particles Electromagnetic synergistic effect Impedance matching

来源：评论

学校读者我要写书评

暂无评论

Optical second harmonic generation in anisotropic multilayers with complete multireflection of linear and nonlinear waves using♯*** package

引用

npj Computational materials 2024年第1期10卷 2566-2580页

作者： Rui Zu Bo Wang Jingyang He Lincoln Weber Akash Saha Long-Qing Chen Venkatraman Gopalan Department of Materials Science and Engineering The Pennsylvania State UniversityUniversity ParkPA 16802USA Materials Science Division Lawrence Livermore National LaboratoryLivermoreCA 94550USA Department of Engineering Science and Mechanics The Pennsylvania State UniversityUniversity ParkPA 16802USA Department of Mathematics The Pennsylvania State UniversityUniversity ParkPA 16802USA Department of Physics Pennsylvania State UniversityUniversity ParkPA 16802USA

Optical second harmonic generation(SHG)is a nonlinear optical effect widely used for nonlinear optical microscopy and laser frequency ***-form analytical solution of the nonlinear optical responses is essential for evaluating materials whose optical properties are unknown a priori.A recent open-source code,♯***,can provide such closed form solutions for crystals with arbitrary symmetries,orientations,and anisotropic properties at a single ***,optical components are often in the form of slabs,thin films on substrates,and multilayer heterostructures with multiple reflections of both the fundamental and up to ten different SHG waves at each interface,adding significant *** approximations have therefore been employed in the existing analytical approaches,such as slowly varying approximation,weak reflection of the nonlinear polarization,transparent medium,high crystallographic symmetry,Kleinman symmetry,easy crystal orientation along a high-symmetry direction,phase matching conditions and negligible interference among nonlinear waves,which may lead to large errors in the reported material *** avoid these approximations,we have developed an open-source package named Second Harmonic Analysis of Anisotropic Rotational Polarimetry in Multilayers(♯***).The reliability and accuracy are established by experimentally benchmarking with both the SHG polarimetry and Maker fringes using standard and commonly used nonlinear optical materials as well as twisted 2-dimensional heterostructures.

关键词： properties nonlinear symmetry

来源：评论

学校读者我要写书评

暂无评论

Hydrodynamic metamaterials:Principles,experiments,and applications

引用

Droplet 2023年第4期2卷 45-62页

作者： Mengyao Chen Xiangying Shen Lei Xu Department of Physics The Chinese University of Hong KongHong KongChina Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhenChina

Hydrodynamic metamaterials,a nascent research field,possess immense potential for fluid flow *** engineered structure design,they offer unparalleled control over fluid behavior beyond the capabilities of conventional *** this review,we focus on hydrodynamic metamaterials and provide a comprehensive overview of the current state of this research *** start by introducing basic theories and principles of hydrodynamic metamaterials and then illustrate the different functions of hydrodynamic metamaterials that have been realized in porous medium flow and Hele‐Shaw ***,we also demonstrate the multifunctional metamaterials that have been developed in *** research progresses are highlighted due to their promising applications,including drag reduction,microfluidic manipulation,and biological tissue *** review concludes by identifying major challenges and proposing research directions for the future.

关键词： methods field flow

来源：评论

学校读者我要写书评

暂无评论

High Density 3D Carbon Tube Nanoarray Electrode Boosting the Capacitance of Filter Capacitor

引用

Nano-Micro Letters 2024年第11期16卷 242-254页

作者： Gan Chen Fangming Han Huachun Ma Pei Li Ziyan Zhou Pengxiang Wang Xiaoyan Li Guowen Meng Bingqing Wei Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and NanotechnologyInstitute of Solid State PhysicsHFIPSChinese Academy of SciencesHefei 230031People’s Republic of China Department of Materials Science and Engineering University of Science and Technology of ChinaHefei 230026People’s Republic of China Department of Mechanical Engineering University of DelawareNewarkDE 19716USA Mechano‑X Institute Applied Mechanics LaboratoryDepartment of Engineering MechanicsTsinghua UniversityBeijing 100084People’s Republic of China

Electric double-layer capacitors(EDLCs)with fast frequency response are regarded as small-scale alternatives to the commercial bulky aluminum electrolytic *** carbon-based nanoarray electrodes with precise alignment and smooth ion channels is crucial for enhancing EDLCs’***,controlling the density of macropore-dominated nanoarray electrodes poses challenges in boosting the capacitance of line-filtering ***,a simple technique to finely adjust the vertical-pore diameter and inter-spacing in three-dimensional nanoporous anodic aluminum oxide(3D-AAO)template is achieved,and 3D compactly arranged carbon tube(3D-CACT)nanoarrays are created as electrodes for symmetrical EDLCs using nanoporous 3D-AAO template-assisted chemical vapor deposition of *** 3D-CACT electrodes demonstrate a high surface area of 253.0 m^(2) g^(−1),a D/G band intensity ratio of 0.94,and a C/O atomic ratio of *** a result,the high-density 3D-CT nanoarray-based sandwich-type EDLCs demonstrate a record high specific areal capacitance of 3.23 mF cm^(-2) at 120 Hz and exceptional fast frequency response due to the vertically aligned and highly ordered nanoarray of closely packed CT *** 3D-CT nanoarray electrode-based EDLCs could serve as line filters in integrated circuits,aiding power system miniaturization.

关键词： Compactly arranged Three-dimensional carbon tube nanoarray Dimensional carbon tube nanoarray Fast frequency response Electric double-layer capacitors Layer capacitors AC line-filtering Filtering

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：