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Synthesized complex‑frequency excitation for ultrasensitive molecular sensing

eLight 2024年第1期4卷 283-292页

作者： Kebo Zeng Chenchen Wu Xiangdong Guo Fuxin Guan Yu Duan Lauren LZhang Xiaoxia Yang Na Liu Qing Dai Shuang Zhang New Cornerstone Science Laboratory Department of PhysicsUniversity of Hong KongHong KongChina CAS Key Laboratory of Nanophotonic Materials and Devices CAS Key Laboratory of Standardization and Measurement for NanotechnologyCAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijingChina Department of Chemistry and Chemical Biology Harvard UniversityCambridgeMA 02138USA 2^(nd)Physics Institute University of StuttgartPfaffenwaldring 5770569 StuttgartGermany Max Planck Institute for Solid State Research D‑70569 StuttgartGermany Department of Electrical and Electronic Engineering University of Hong KongHong KongChina

Sensors have emerged as indispensable analytical tools across a wide range of important fields,encompassing environmental monitoring,food safety,and public *** facilitate early disease diagnosis,personalized medicine,and rapid detection of toxic ***,detecting trace molecules remains a significant *** infrared absorption(SEIRA)based on plasmonic nanostructures,particularly graphene,has emerged as a promising approach to enhance sensing *** graphene-based SEIRA offers advantages such as high sensitivity and active tunability,intrinsic molecular damping weakens the interaction between vibrational modes and ***,we demonstrate ultrahigh-sensitive molecular sensing based on synthesized complex-frequency waves(CFW).Our experiment shows that CFW can amplify the molecular signals(silk protein monolayer)detected by graphene-based sensor by at least an order of magnitude and can be universally applied to molecular sensing in different *** approach is highly scalable and can facilitate the investigation of light-matter interactions,enabling diverse potential applications in fields such as optical spectroscopy,biomedicine and pharmaceutics.

关键词： excitation diagnosis emerged

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Vortex-field enhancement through high-threshold geometric metasurface

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Opto-Electronic Advances 2024年第12期7卷 79-90页

作者： Qingsong Wang Yao Fang Yu Meng Han Hao Xiong Li Mingbo Pu Xiaoliang Ma Xiangang Luo National Key Laboratory of Optical Field Manipulation Science and Technology Chinese Academy of SciencesChengdu 610209China State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering Institute of Optics and ElectronicsChinese Academy of SciencesChengdu 610209China College of Materials Science and Opto-Electronic Technology University of Chinese Academy of SciencesBeijing 100049China Research Center on Vector Optical Fields Institute of Optics and ElectronicsChinese Academy of SciencesChengdu 610209China

Intense vortex beam is expected to empower captivating phenomena and applications in high power laser-matter ***,the superposition of multiple vortex beams has shown the unique ability to tailor and enhance the vortex ***,traditional strategies to generate such beams suffer from large volume or/and low laser-induced damage threshold,hindering the practical widespread ***,a single high-threshold metasurface is proposed and experimentally demonstrated for the generation and superposition of multiple collinear vortex *** scheme takes advantage of the high conversion efficiency of phase-only modulation in the metasurface design by adopting the concept of a sliced phase pattern in the azimuthal *** optical hot spot with an enhanced intensity and steady spatial propagation is experimentally ***,femtosecond laser-induced birefringent nanostructures embedded in silica glass are utilized as the building block with high optical *** greater than 99.4%in the near-in-frared range and laser-induced damage threshold as high as 68.0 J/cm^(2)(at 1064 nm,6 ns)are experimentally *** these remarkable performances,the demonstrated high-threshold metasurface has promising applications in a host of high-power laser fields.

关键词： multiple vortex beams metasurface high-threshold birefringent nanostructures femtosecond laser

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Discontinuous streaming potential via liquid gate

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escience 2022年第6期2卷 615-622页

作者： Jian Zhang Kan Zhan Shusong Zhang Yigang Shen Yaqi Hou Jing Liu Yi Fan Yunmao Zhang Shuli Wang Yanbo Xie Xinyu Chen Xu Hou State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen361005China Institute of Artificial Intelligence Xiamen UniversityXiamen361005China School of Physical Science and Technology Northwestern Polytechnical UniversityXi'an710072China School of Aeronautics and Institute of Extreme Mechanics Northwestern Polytechnical UniversityXi'an710072China Fujian Engineering Research Center for Solid-State Lighting Department of Electronic ScienceSchool of Electronic Science and EngineeringXiamen UniversityXiamen361005China College of Physical Science and Technology Xiamen UniversityXiamen361005China Office of International Cooperation and Exchange Xiamen UniversityXiamen361005China Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM) Xiamen361005China

Streaming potential is mainly related to electrokinetic energy conversion,which has been considered to show promising potential for advanced technologies,especially *** inherent property of streaming potential is that the energy conversion process is always a continuous ***,practical applications include many cases of discontinuous states,such as nonlinear ***,we report a discontinuous streaming potential electrokinetic energy conversion fluid *** and theoretical calculations reveal that this system exhibits a discontinuous electrokinetic effect and provides a gating liquid slip in micropores,offering the advantages of gating liquid charge coupling and interfacial drag ***,the system is demonstrated in a wearable fall-down alert *** expect this liquid gating energy conversion system to open up a platform for the design and application of autonomous health monitoring devices,seismic sea wave warning systems,and beyond.

关键词： Liquid gating technology Electrokinetic effect Membrane science Discontinuous behavior Streaming potential

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Quantum Hall plateau-plateau transition revisited

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Chinese Journal of Physics 2023年 82卷 149-154页

作者： Yeh, Ching-Chen Wang, Siang-Chi Lo, Shun-Tsung Kim, Gil-Ho Ritchie, D.A. Strasser, Gottfried Liang, Chi-Te Department of Physics National Taiwan University Taipei 106 Taiwan Department of Electrophysics and Center for Emergent Functional Matter Science National Yang Ming Chiao Tung University Hsinchu 300 Taiwan School of Electronic and Electrical Engineering Sungkyunkwan Advanced Institute of Nanotechnology (SAINT) and School of Advanced Materials Science and Engineering Sungkyunkwan University Suwon 440-746 South Korea Cavendish Laboratory J. J. Thomson Avenue Cambridge CB3 OHE United Kingdom Institute of Solid State Electronics TU Wien Gusshausstrasse 25-25a Vienna 1040 Austria Center for Quantum Science and Engineering National Taiwan University Taipei 106 Taiwan Taiwan Consortium of Emergent Crystalline Materials (TCECM) Taipei 106 Taiwan

We observe a temperature-independent point Bc in the longitudinal resistance Rxx of a GaAs-based two-dimensional electron gas in the quantum Hall plateau-plateau transition. This allows us to revisit the spin-degenera... 详细信息

We observe a temperature-independent point B_c in the longitudinal resistance R_xx of a GaAs-based two-dimensional electron gas in the quantum Hall plateau-plateau transition. This allows us to revisit the spin-degenerate plateau-plateau transition and use the R_xx peak movement with respect to B_c at various temperatures T so as to calculate the critical exponent κ. We suggest that one measures the maximum of the derivative of Hall resistivity dρ_xy/dB ∼ T^−κ as well as the movement of R_xx at different temperatures, allowing one to measure κs using two independent methods. When the peak movement is so large that the resistance peak is no longer in the vicinity of B_c, a largely deviated κ =0.54±0.04 from the value (0.21±0.02 ) in some spin-degenerate system can be measured. © 2023 The Physical Society of the Republic of China (Taiwan)

关键词： Critical exponent Quantum Hall plateau Transition Two-dimensional critical magnetic field

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Near-infrared wide field-of-view multi-spectral polarization imaging system based on metasurfaces 10

Near-infrared wide field-of-view multi-spectral polarization...

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10th Symposium on Novel Optoelectronic Detection Technology and Applications

作者： Bao, Hanlin Zhang, Fei Kang, Tongtong Pu, Mingbo Li, Xiong Ma, Xiaoliang He, Qiong Luo, Xiangang National Key Laboratory of Optical Field Manipulation Science and Technology Chinese Academy of Sciences Chengdu610209 China State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering Institute of Optics and Electronics Chinese Academy of Sciences Chengdu610209 China College of Materials Sciences and Opto-Electronic Technology University of Chinese Academy of Sciences Beijing100049 China Research Center on Vector Optical Fields Institute of Optics and Electronics Chinese Academy of Sciences Chengdu610209 China

ISBN: (数字)9781510688155

ISBN: (纸本)9781510688148

Multi-spectral and polarization imaging techniques can collect additional information from a target, such as its compositional makeup and texture. As a result, these techniques are widely applied in fields like remote sensing, biomedical imaging, environmental monitoring, and resource exploration. However, traditional spectral-polarization imaging systems are typically complex and bulky, as they require multiple spectral/polarization channels and aberration correction, which limits their potential for miniaturization and light-weighting. Here, we propose a dual-layer metasurface array-based system for wide field-of-view, snapshot multi-spectral full-Stokes polarization imaging. The system comprises six spectral channels, each containing four polarization channels, and provides a wide field-of-view of 30°. Our design simplifies the system architecture, achieving both miniaturization and reduced weight while maintaining near-diffraction-limit imaging quality. This method can be adapted to any spectral band, and we believe it holds significant potential for applications in target recognition and autonomous driving. © 2025 SPIE.

关键词： Infrared imaging

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Bilayer planar liquid crystal lens enabling wide field of view imaging 10

Bilayer planar liquid crystal lens enabling wide field of vi...

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10th Symposium on Novel Optoelectronic Detection Technology and Applications

作者： Lei, Yu Zhang, Fei Zhang, Dapeng Zhang, Qi Pu, Mingbo Yue, Weisheng Luo, Xiangang National Key Laboratory of Optical Field Manipulation Science and Technology Chinese Academy of Sciences Chengdu610209 China State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering Institute of Optics and Electronics Chinese Academy of Sciences Chengdu610209 China College of Materials Sciences and Opto-Electronic Technology University of Chinese Academy of Sciences Beijing100049 China Research Center on Vector Optical Fields Institute of Optics and Electronics Chinese Academy of Sciences Chengdu610209 China

ISBN: (数字)9781510688155

ISBN: (纸本)9781510688148

Wide field of view (FOV) imaging systems are widely used in fields such as panoramic imaging, microscope, and holographic display. Traditional approaches to achieving wide FOV imaging include stitching FOVs and using refractive fisheye or catadioptric panoramic lenses. However, these methods often result in complex system structures and large volumes. Although planar optics can effectively address these challenges due to their lightweight and high degree of design freedom, existing metasurface-based solutions are still constrained by complex fabrication processes and high manufacturing costs, which hinder their commercialization. In contrast, the planar liquid crystal lens (PLCL) based on geometric phase offers a potential solution due to its simple and efficient fabrication methods. However, the limitation of the phase gradient makes it difficult for a single PLCL to achieve large-angle light deflection. Therefore, there is still room for improvement in wide FOV imaging based on PLCLs. Here, we propose a design methodology for a wide FOV imaging system based on a bilayer PLCL, achieving diffraction-limited imaging over an 80°full FOV without a large phase gradient. The simulation results validate its corresponding optical performance, demonstrating high-quality imaging capabilities. The proposed bilayer PLCL holds significant promise for advancing the development of simple and low-cost manufacturing of wide FOV optical imaging systems. © 2025 SPIE.

关键词： Holographic displays

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Interfacial challenges for all-solid-state batteries based on sulfide solid electrolytes

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Journal of Materiomics 2021年第2期7卷 209-218页

作者： Shuo Wang Ruyi Fang Yutao Li Yuan Liu Chengzhou Xin Felix H.Richter Ce-Wen Nan State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing100084China Materials Science and Engineering Program and Texas Materials Institute The University of Texas at AustinAustinTX78712United States Institute of Physical Chemistry&Center for Materials Research Justus-Liebig-University GiessenHeinrich-Buff-Ring 17D-35392GiessenGermany State Key Laboratory of Bio-fibers and Eco-textiles Institute of Biochemical EngineeringCollege of Materials Science and EngineeringQingdao UniversityQingdao266071China

Sulfide solid electrolytes(e.g.,lithium thiophosphates)have the highest room-temperature ionic conductivity(-10^(-2) S cm^(-1))among solid Li-ion conductors so far,and thus have attracted ever-increasing attention for high energy-density and safety all-solid-state batteries(ASSBs).However,interfacial issues between sulfide electrolytes and electrodes have been the main challenges for their applications in *** interfacial instabilities would occur due to side reactions of sulfides with electrodes,poor solid-solid contact,and lithium dendrites during charge/discharge *** this review,we analyze the interfacial issues in ASSBs based on sulfide electrolytes,and in particular,discuss strategies for solving these interfacial issues and stabilize the electrode-electrolyte ***,a perspective of the interfacial engineering for sulfide-based ASSBs is provided.

关键词： Sulfide solid electrolytes Interfacial engineering All-solid-state batteries Li-metal protection

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Coupling-enabled dynamic switching of the Pancharatnam-Berry phase 10

Coupling-enabled dynamic switching of the Pancharatnam-Berry...

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10th Symposium on Novel Optoelectronic Detection Technology and Applications

作者： Liao, Minghao Chen, Yan Zhang, Fei Jiang, Mengna Pu, Mingbo Luo, Xiangang National Key Laboratory of Optical Field Manipulation Science and Technology Chinese Academy of Sciences Chengdu610209 China State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering Institute of Optics and Electronics Chinese Academy of Sciences Chengdu610209 China College of Materials Sciences and Opto-Electronic Technology University of Chinese Academy of Sciences Beijing100049 China Research Center on Vector Optical Fields Institute of Optics and Electronics Chinese Academy of Sciences Chengdu610209 China

ISBN: (数字)9781510688155

ISBN: (纸本)9781510688148

The Pancharatnam-Berry geometric phase originates from the interaction between the spin and orbital angular momentum of photons and is typically regarded as having a phase magnitude that is twice the rotation angle of C1 or C2 rotational symmetry structures, and is typically independent of factors such as periodicity size, dispersion, and wavelength. The generalized geometric phase challenges the traditional understanding by allowing its existence in structures with higher-order rotational symmetries, and the phase is no longer twice the rotation angle of anisotropic meta-atoms. Despite this, the traditional view that the geometric phase is independent of the unit cell periodicity and operating wavelength is considered valid. In this study, we demonstrate that by leveraging the coupling effects between unit cells, it is possible to overcome the insensitivity of the geometric phase to parameters such as the meta-atom periodicity and operating wavelength, realizing dynamic adjustment of the geometric phase. As proof of the concept, we demonstrated the flexible control over the deflection angle of spin-Hall devices utilizing the dynamic adjustment of the geometric phase. Our work provides a method for the dynamic control of geometric phases, which may further advance the development of geometric phase metasurfaces. © 2025 SPIE.

关键词： Hall effect devices

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Interlayer ferroelectric polarization modulated anomalous Hall effect in four-layer MnBi2Te4 antiferromagnets

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Physical Review B 2024年第17期109卷 174405-174405页

作者： Ziyu Niu Xiang-Long Yu Dingfu Shao Xixiang Jing Defeng Hou Xuhong Li Jing Sun Junqin Shi Xiaoli Fan Tengfei Cao Research Center for Advanced Lubrication and Sealing Materials School of Materials Science and Engineering Northwestern Polytechnical University Xi'an Shaanxi 710072 People's Republic of China Shenzhen Institute for Quantum Science and Engineering Southern University of Science and Technology Shenzhen 518055 China International Quantum Academy Shenzhen 518048 China Key Laboratory of Materials Physics Institute of Solid State Physics HFIPS Chinese Academy of Sciences Hefei 230031 China State Key Laboratory of Solidification Processing Northwestern Polytechnical University Xi'an Shaanxi 710072 People's Republic of China

Van der Waals (vdW) assembly could efficiently modulate the symmetry of two-dimensional (2D) materials that ultimately governs their physical properties. Of particular interest is the ferroelectric polarization being introduced by proper vdW assembly that enables the realization of novel electronic, magnetic, and transport properties of 2D materials. Four-layer bulklike stacking antiferromagnetic MnBi2Te4 (FB-MBT) offers an excellent platform to explore ferroelectric polarization effects on magnetic order and topological transport properties of nanomaterials. Here, by applying symmetry analyses and density-functional-theory calculations, the ferroelectric interface effects on magnetic order, anomalous Hall effect (AHE) or even quantum AHE (QAHE) on the FB-MBT are analyzed. Interlayer ferroelectric polarization in FB-MBT efficiently violates the P̂T̂ symmetry [the combination of central inversion (P̂) and time reverse (T̂) symmetry] of the FB-MBT by conferring magnetoelectric couplings, and stabilizes a specific antiferromagnetic order encompassing a ferromagnetic interface in the FB-MBT. We predict that engineering an interlayer polarization in the top or bottom interface of FB-MBT allows converting FB-MBT from a trivial insulator to a Chern insulator. The switching of ferroelectric polarization at the middle interfaces results in a direction reversal of the quantum anomalous Hall current. Additionally, the interlayer polarization of the top and bottom interfaces can be aligned in the same direction, and the switching of polarization direction also reverses the direction of anomalous Hall currents. Overall, our work highlights the occurrence of quantum-transport phenomena in 2D vdW four-layer antiferromagnets through vdW assembly. These phenomena are absent in the bulk or thin-film in bulklike stacking forms of MnBi2Te4.

关键词： Anomalous Hall effect Chern insulators Magnetism Quantum anomalous Hall effect Symmetry protected topological states Topological insulators Magnetic systems

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利用电荷转移工程提高红色SrLa(Sc,Ga)O_(4):Ce^(3+)荧光粉的热稳定性

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science China materials 2023年第5期66卷 1989-1996页

作者：杨至雨赵逸飞 Jumpei Ueda Maxim S.Molokeev 尚蒙蒙夏志国 State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied TechniquesGuangdong Engineering Technology Research and Development Centre of Special Optical Fibre Materials and DevicesSchool of Materials Science and EngineeringSouth China University of TechnologyGuangzhou 510641China Department of Applied Physics The Hong Kong Polytechnic UniversityHong Kong 999077China Graduate School of Advanced Science and Technology Japan Advanced Institute of Science and Technology(JAIST)NomiIshikawa 923–1292Japan Laboratory of Crystal Physics Kirensky Institute of PhysicsFederal Research Center KSC SB RASKrasnoyarsk 660036Russia Department of Engineering Physics and Radioelectronic Siberian Federal UniversityKrasnoyarsk660041Russia Research and Development Department Kemerovo State UniversityKemerovo 650000Russia Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials(Ministry of Education) School of Materials Science and EngineeringShandong UniversityJinan 250061China School of Physics and Optoelectronics South China University of TechnologyGuangzhou 510641China

可被蓝光激发的高热稳定性红色荧光粉是制作高性能白光二极管(WLED)的关键材料.研究发现,Ce^(3+)掺杂的SrLaScO_(4)(SLO:Ce^(3+))荧光粉在440 nm激发下呈现峰值为640 nm的反常宽带红光发射.光谱学和结构分析证实Ce^(3+)离子在SLO中进入[... 详细信息

可被蓝光激发的高热稳定性红色荧光粉是制作高性能白光二极管(WLED)的关键材料.研究发现,Ce^(3+)掺杂的SrLaScO_(4)(SLO:Ce^(3+))荧光粉在440 nm激发下呈现峰值为640 nm的反常宽带红光发射.光谱学和结构分析证实Ce^(3+)离子在SLO中进入[LaO_(8)]多面体,产生强的晶体场劈裂和较大的Stokes位移,实现了比Eu^(2+)更低能量的红光发射.我们还设计并揭示了一种电荷转移相互作用的策略:在Sc^(3+)位置引入电负性较大的Ga^(3+),Ga^(3+)可以吸引更多邻位配合基团的电荷,以减少导带底部的电子占用而扩大带隙.Sc/Ga取代有效地抑制了热激活电离过程,使SrLa(Sc,Ga)O_(4):Ce^(3+)的热稳定性获得了显著提升,即在150℃的发光强度比(相对于20℃)从15%提升至31%.本研究为发现具有良好热稳定性的新型Ce^(3+)掺杂红色荧光粉提供了有效的设计原则.

关键词： Ce^(3+) thermal stability band gap broadband red luminescence

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