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Surface lattice carbon cycles the reverse water–gas shift reaction

Science China Chemistry 2025年第6期68卷 2209-2211页

作者： Jun Wang Jianyong Feng Zhaosheng Li Collaborative Innovation Center of Advanced Microstructures National Laboratory of Solid State Microstructures School of PhysicsNanjing University Jiangsu Key Laboratory for Nano Technology College of Engineering and Applied Sciences Nanjing University

The reverse water–gas shift（RWGS） reaction combined with Fischer–Tropsch synthesis establishes a promising tandem catalytic system for transforming CO2into valuable chemicals and fuels [1,2]. However, the techno-economic assessment suggests that the RWGS reaction becomes viable and economically competitive only when catalysts with 100%CO selectivity（thus eliminating the downstream separation step）, high activity, sufficiently long operational durability,and ideally produced from earth-abundant materials and energy-efficient routes, are available [3].

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A biomimetic aluminum composite exhibiting gradient-distributed thermal expansion,high thermal conductivity,and highly directional toughness

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材料科学技术（英文版） 2025年第10期213卷 90-97页

作者： B.Ke Dong C.Long Wei J.Chao Lin L.Lu Xie K.Ke Liu T.Jiao Xiong W.Hai Song Peng Tong Y.Ping Sun Key Laboratory of Materials Physics Institute of Solid State PhysicsHFIPSChinese Academy of SciencesHefei230031China University of Science and Technology of China Hefei230026China School of Electronic Engineering and Intelligent Manufacturing Anqing Normal UniversityAnqing246133China Key Laboratory of Materials Physics Institute of Solid State PhysicsHFIPSChinese Academy of SciencesHefei230031China Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions High Magnetic Field LaboratoryHFIPSChinese Academy of SciencesHefei230031China Key Laboratory of Materials Physics Institute of Solid State PhysicsHFIPSChinese Academy of SciencesHefei230031China

Because of the large coefficient of thermal expansion(CTE)(23 ppm K-1),aluminum faces challenges in meeting the demands of high dimensional stability in precision instruments,microelectronics,and *** negative thermal expansion(NTE)particles into aluminum can create composites with either zero or low ***,the resulting composites usually have poor thermal conductivity due to their monolithic configuration,i.e.,the NTE particles are filled ***,heat sinks should be equipped to assist their usage(e.g.,in thermal management).This in turn causes strong thermal stress in the packaging system owing to the high contrast in the CTEs between those monolithic composites and heat sinks typically made of copper or ***,we propose a gradient configuration for low-CTE aluminum composite,inspired by the bamboo *** gradient distribution of NTE particles(Zn0.5Sn0.3Mn0.2NMn3,ZSM)was obtained by laying up several layers of ZSM/Al with the ZSM fraction ranging from 0 to 28 vol.％.In the gradient composite,the CTE near room temperature varies from 3.4 pm K-1 on one side to 21 ppm K-1 on the other *** a gradient CTE distribution would facilitate the low-thermal-stress designs and thus help stabilize the dimension of a precision ***,this composite has a high thermal conductivity of 130 W m-1 K-1 and strong toughness when the flexural loading is applied on the 28 vol.％ZSM/Al *** research provides a novel approach to designing metallic matrix composites with unprecedented performance.

关键词： Biomimetic materials Gradient materials Low thermal expansion High thermal conductivity Toughness

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Quasi-anti-parity–time-symmetric single-resonator micro-optical gyroscope with Kerr nonlinearity

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Chinese physics B 2024年第1期33卷 436-440页

作者：耿靖童徐书逸靳婷丁舒林杨柳王颖张勇刚 College of Intelligent Systems Science and Engineering Harbin Engineering UniversityHarbin 150001China National Laboratory of Solid State Microstructures School of Physicsand College of Engineering and Applied SciencesNanjing UniversityNanjing 210093China

Parity–time(PT) and quasi-anti-parity–time(quasi-APT) symmetric optical gyroscopes have been proposed recently which enhance Sagnac frequency splitting. However, the operation of gyroscopes at the exceptional point(EP) is challenging due to strict fabrication requirements and experimental uncertainties. We propose a new quasi-APT-symmetric micro-optical gyroscope which can be operated at the EP by easily shifting the Kerr nonlinearity. A single resonator is used as the core sensitive component of the quasi-APT-symmetric optical gyroscope to reduce the size, overcome the strict structural requirements and detect small rotation rates. Moreover, the proposed scheme also has an easy readout method for the frequency splitting. As a result, the device achieves a frequency splitting 10~5 times higher than that of a classical resonant optical gyroscope with the Earth's rotation. This proposal paves the way for a new and valuable method for the engineering of micro-optical gyroscopes.

关键词： optical gyroscopes quasi-anti-parity–time(quasi-APT)symmetric system exceptional point(EP) the Kerr nonlinearity

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Lithium-plasmon-based low-powered dynamic color display

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National Science Review 2023年第1期10卷 205-213页

作者： Jie Liang Yan Jin Huiling Yu Xinjie Chen Lin Zhou Pengcheng Huo Ye Zhang Haiyang Ma Yi Jiang Bin Zhu Ting Xu Hui Liu Shining Zhu Jia Zhu National Laboratory of Solid State Microstructures College of Engineering and Applied SciencesSchool of Physics Key Laboratory of Intelligent Optical Sensing and ManipulationMinistry of EducationJiangsu Key Laboratory of Artificial Functional MaterialsNanjing University

Display and power supply have been two essential and independent cornerstones of modern ***,we report a lithium-plasmon-based low-powered dynamic color display with intrinsic dual functionality（plasmonic display and energy recycling unit） which is a result of the electric-field-driven transformation of nanostructured lithium *** color displays are enabled by plasmonic transformation through electrodeposition（electrostripping） of lithium metals during the charging（discharging） process,while the consumed energy for coloring can be retrieved in the inverse process *** recycling of lithium metals brings energy consumption down to 0.390 mW cm-2(0.105 mW cm-2) for the active（static） coloration state of a pro of-of-concept display/battery device,which approaches nearly-zero-energy-consumption in the near-100%-energy-efficiency limit of commercial lithium *** the subwavelength feature of plasmonics with effective energy recycling,the lithium-plasmon-based dynamic display offers a promising route towards next-generation integrated photonic devices,with the intriguing advantages of low energy consumption,a small footprint and high resolution.

关键词： lithium plasmon dynamic display lithium metal battery low energy consumption lithium nanoparticle

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Indirect-to-direct band gap transition induced by d−d coupling between cations in rare-earth chalcogenide perovskites

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Physical Review B 2024年第4期110卷 L041201-L041201页

作者： Han Zhang Yichun Pan Zexin Liu Biao Zeng Xiaowei Wu Chen Ming Guoqing Xin Weihang Zhou Hao Zeng Shengbai Zhang Yi-Yang Sun State Key Laboratory of High Performance Ceramics and Superfine Microstructure Center of Materials Science and Optoelectronics Engineering Wuhan National High Magnetic Field Center and School of Physics Department of Physics University at Buffalo The Department of Physics Applied Physics and Astronomy

Chalcogenide perovskite materials have been shown to exhibit excellent properties for optoelectronics and photovoltaics. The research, however, has been focused on the II-IV-S3 series of compounds. Here, by theoretical calculation, we predict that in the III-III-S3 perovskites, there could exist a transition between the indirect and direct band gaps induced by the coupling strength of the d orbitals between the A-site and B-site cations. We validate this prediction by synthesizing LaScS3 through solid state reaction from three elemental materials. Micro-Raman analysis combined with Raman tensor calculations are used to identify the perovskite phase of micrometer-size grains, from which photoluminescence can be observed. The emitted light peaks at about 519 nm (or 2.39 eV), which corresponds to the largest band gap among the sulfide perovskites. The discovery of light-emitting LaScS3 enriches the family of chalcogenide perovskites for optoelectronic applications.

关键词： Band gap First-principles calculations Luminescence Optoelectronics Perovskites

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Overcoming bandwidth limitations in space-coiled acoustic metamaterials through inclined perforated plate design

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Chinese physics B 2025年第1期34卷 374-379页

作者： Jixin Liu Fengmin Wu Ting Li Junjun Wang Xinye Zou Dong Zhang Department of Applied Physics School of ScienceHarbin University of Science and TechnologyHarbin 150080China Key Laboratory of Modern Acoustics(MOE) Department of PhysicsCollaborative Innovation Center of Advanced MicrostructureNanjing UniversityNanjing 210093China Laboratory of Solid State Microstructures Nanjing UniversityNanjing 210093China

Traditional space-coiled acoustic metamaterials have been widely used in the fields of low-frequency sound absorption and noise ***,they have limitations in terms of low-frequency absorption bandwidth,and the weak coupling effect under complex coiled structures also limits their *** this work,we introduce the composite structure changing the characteristic impedance of acoustic metamaterials to enhance the coupling ***,the perforated plates with inclined design instead of traditional partitions greatly improve the sound *** model and method designed in this paper show significant innovation in enhancing low-frequency absorption performance.

关键词： metamaterials composite structure over-damped modes coupling sound absorption

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Realization of highly asymmetric hydrogenated graphene in the van der Waals confined space

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National Science Review 2025年第4期12卷 318-327页

作者： Xianlei Huang Hang Zheng Weilin Liu Li Zhu Guowen Yuan Jie Xu Kaiyuan Wang Lei Wang Shao-Chun Li Libo Gao National Laboratory of Solid State Microstructures Jiangsu Key Laboratory for NanotechnologySchool of PhysicsCollaborative Innovation Center of Advanced MicrostructuresNanjing University Anhui Provincial Key Laboratory of Magnetic Functional Materials and Devices School of Materials Science and Engineering Anhui University

The van der Waals(vdW) confined space provides a distinct environment from free space,enabling the production of two-dimensional Janus materials,like highly asymmetric hydrogenated graphene(AH-Gr).Here,we develop a vdW confined space assisted hydrogenation method to produce *** confined space between graphene and the substrate aggregates hydrogen radicals,making the bottom-side of graphene more prone to *** dense and homogeneous confined spaces between adjacent vdW crystals promote rapid and uniform distribution of carbon-hydrogen(C—H) *** hydrogen-to-carbon atomic(H/C) ratios can be quantitatively controlled by adjusting the permeated proton *** AH-Gr,regardless of H/C ratios,remain *** spatial distributions of C—H bonds significantly influence the electrical and magnetic properties of *** hydrogenation transforms graphene from a semi-metal to a semiconductor,suppresses the quantum Hall effect,and reduces the phase coherence *** study provides new insights into the preparation and characteristics of hydrogenated graphene,broadening the applications of vdW confined space.

关键词： van der Waals confined space highly asymmetric hydrogenated graphene proton

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Generation of Isolated Attosecond Pulses by the Harmonic Spectrum of MgO under a Three-Color Laser Pulse

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Chinese physics Letters 2025年第1期42卷 48-52页

作者： Jiaqi Chen Wenli Jiang Yue Qiao Yujun Yang Jigen Chen School of Materials Science and Engineering Taizhou UniversityTaizhou 318000China Institute of Atomic and Molecular Physics Jilin UniversityChangchun 130012China Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy(Jilin University) Changchun 130012China

This study examines the high-order harmonic radiation behavior of MgO crystals driven by combined pulses based on the numerical solution of the semiconductor Bloch *** found that compared with the monochromatic pulse,the MgO crystal can radiate a continuous harmonic spectrum with two platforms driven by the three-color combined *** reason is that under the three-color combined pulse,the electron ionization and recombination can be effectively controlled within a half-optical cycle of the laser *** this continuous spectrum,we synthesized an isolated attosecond pulse with a duration of approximately 370 *** study provides a new perspective on all-solid-state compact optical devices.

关键词： pulse optical harmonic

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Quantum dynamics within curved thin layers with deviation

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Chinese physics B 2024年第7期33卷 502-507页

作者：程润赵浩罗翠柏周璇王必利李延标王骏 Physics Department of Basic Department Army Engineering University of PLANanjing 211101China National Laboratory of Solid State Microstructure Collaborative Innovation Center of Advanced Microstructuresand School of PhysicsNanjing UniversityNanjing 210093China School of Physics and Electronics Hunan UniversityChangsha 410082China Department of Physics Anhui Normal UniversityWuhu 241002China

Combining the deviation between thin layers' adjacent surfaces with the confining potential method applied to the quantum curved systems,we derive the effective Schr?dinger equation describing the particle constrained within a curved layer,accompanied by a general geometric potential V_(gq) composed of a compression-corrected geometric potential V_(gq)~*and a novel potential V_(gq)~(**) brought by the *** this analysis to the cylindrical layer emerges two types of deviation-induced geometric potential,resulting from the the cases of slant deviation and tangent deviation,respectively,which strongly renormalizes the purely geometric potential and contribute to the energy spectrum based on a very substantial deepening of bound states they offer.

关键词： confining potential method quantum mechanics curved thin layer

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Emulation of Schrödinger dynamics with metamaterials

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Science Bulletin 2025年第8期70卷 1347-1360页

作者： Zhao-Xian Chen Wan-Ge Song Guang-Chen He Xiao-Meng Zhang Ze-Guo Chen Haitan Xu Emil Prodan National Laboratory of Solid State Microstructures and College of Engineering and Applied SciencesNanjing UniversityNanjing 210023China School of Materials Science and Intelligent Engineering Nanjing UniversitySuzhou 215163China New Cornerstone Science Laboratory Department of PhysicsThe University of Hong KongHong Kong 999077China Shishan Laboratory Nanjing UniversitySuzhou 215163China Department of Physics Yeshiva UniversityNew YorkNY 10033USA

The exploration of metamaterials with artificial sub-wavelength structures has empowered researchers to engineer the propagation of classical waves,enabling advancements in areas such as imaging,sensing,communication,and energy ***,the investigation into topology and symmetry has not only unveiled valuable insights into fundamental physics,but also expanded our ability to manipulate waves *** with the remarkable flexibility and diversity of artificial metamaterials,these considerations have sparked a focused research ***,a class of structures capable of supporting topological propagation modes akin to the Schrödinger equation has been *** metamaterials to emulate Schrödinger dynamics has emerged as a promising avenue for robust wave manipulation and the exploration of quantum phenomena beyond the confines of electronic *** rapid progress in this burgeoning field,comprehensive summaries are ***,this review aims to systematically consolidate recent advancements in classical wave physics based on a Schrödinger equation *** discourse initiates with an overview of quantum and classical wave descriptions,subsequently delving into the elucidation of numerous models realized across diverse experimental platforms,including photonic/phononic waveguides,acoustic cavities,and ***,we address the challenges and prospects associated with emulating Schrödinger dynamics,underscoring the potential for groundbreaking developments in this captivating domain.

关键词： Metamaterials Schrödinger dynamics Wave manipulation Topological physics

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