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Level pinning of anti-PT-symmetric circuits for efficient wireless power transfer

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National Science Review 2024年第1期11卷 215-224页

作者： Zhiwei Guo Fengqing yang Haiyan Zhang Xian Wu Qiong Wu Kejia Zhu Jun Jiang Haitao Jiang yaping yang Yunhui Li Hong Chen MOE Key Laboratory of Advanced Micro-Structured Materials School of Physics Sciences and Engineering Tongji University Department of Electrical Engineering Tongji University School of Automotive Studies Tongji University

Wireless power transfer(WPT) technology based on magnetic resonance(a basic physical phenomenon)can directly transfer energy from the source to the load without wires and other physical contacts, and has been successfully applied to implantable medical devices, electric vehicles, robotic arms and other ***, due to the frequency splitting of near-field coupling, the resonant WPT system has some unique limitations, such as poor transmission stability and low efficiency. Here, we propose anti-resonance with level pinning for high-performance WPT. By introducing the anti-resonance mode into the basic WPT platform, we uncover the competition between dissipative coupling and coherent coupling to achieve novel level pinning, and construct an effective anti-parity-time(anti-PT)-symmetric non-Hermitian system that is superior to previous PT-symmetric WPT schemes. On the one hand, the eigenvalue of the anti-PT-symmetric system at resonance frequency is always pure real in both strong and weak coupling regions, and can be used to overcome the transmission efficiency decrease caused by weak coupling, as brought about by, for example, a large size ratio of the transmitter to receiver, or a long transmission *** the other hand, due to the level pinning effect of the two kinds of coupling mechanisms, the working frequency of the system is guaranteed to be locked, so frequency tracking is not required when the position and size of the receiver change. Even if the system deviates from the matching condition, an efficient WPT can be realized, thereby demonstrating the robustness of the level pinning. The experimental results show that when the size ratio of the transmitter coil to the receiver coil is 4.29(which is in the weak coupling region), the transfer efficiency of the anti-PT-symmetric system is nearly 4.3(3.2) times higher than that of the PT-symmetric system when the matching conditions are satisfied(deviated). With the miniaturization and integration of d

关键词： non-Hermitian system wireless power transfer anti-PT-symmetric circuits synthetic dimension metamaterials

Multichannel coupling induced topological insulating phases with full multimerization

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Photonics Research 2024年第3期12卷 491-498页

作者： JUN LI yaping yang C-M.HU MOE Key Laboratory of Advanced Micro-Structured Materials School of Physics Science and EngineeringTongji UniversityShanghai 200092China Department of Physics and Astronomy University of ManitobaWinnipegManitoba R3T 2N2Canada

We propose and experimentally realize a class of quasi-one-dimensional topological lattices whose unit cells are constructed by coupled multiple identical resonators,with uniform hopping and inversion *** the presence of coupling-path-induced effective zero hopping within the unit cells,the systems are characterized by complete multimerization with degenerate-1 energy edge states for open boundary condition.

关键词： symmetry topological coupling

Extreme single-excitation subradiance from two-band Bloch oscillations in atomic arrays

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Photonics Research 2024年第3期12卷 571-580页

作者： LUOJIA WANG DA-WEI WANG LUQI YUAN yaping yang XIANFENG CHEN State Key Laboratory of Advanced Optical Communication Systems and Networks School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Interdisciplinary Center for Quantum Information and State Key Laboratory of Modern Optical Instrumentation Zhejiang Province Key Laboratory of Quantum Technology and Deviceand School of PhysicsZhejiang UniversityHangzhou 310027China MOE Key Laboratory of Advanced Micro-Structured Materials School of Physics Science and EngineeringTongji UniversityShanghai 200092China Shanghai Research Center for Quantum Sciences Shanghai 201315China Collaborative Innovation Center of Light Manipulations and Applications Shandong Normal UniversityJinan 250358China

Atomic arrays provide an important quantum optical platform with photon-mediated dipole–dipole interactions that can be engineered to realize key applications in quantum information processing.A major obstacle for such applications is the fast decay of the excited *** controlling two-band Bloch oscillations of single excitation in an atomic array under an external magnetic field,here we show that exotic subradiance can be realized and maintained with orders of magnitude longer than the spontaneous decay time in atomic arrays with the finite *** key finding is to show a way for preventing the wavepacket of excited states scattering into the dissipative zone inside the free space light cone,which therefore leads to the excitation staying at a subradiant state for an extremely long decay *** show that such operation can be achieved by introducing a spatially linear potential from the external magnetic field in the atomic arrays and then manipulating interconnected two-band Bloch oscillations along opposite *** results also point out the possibility of controllable switching between superradiant and subradiant states,which leads to potential applications in quantum storage.

关键词： excitation Bloch decay

Sequential neoadjuvant chemotherapy using pegylated liposomal doxorubicin and cyclophosphamide followed by taxanes with complete trastuzumab and pertuzumab treatment for HER2-positive breast cancer: A phase Ⅱ single-arm study

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Chinese Journal of Cancer Research 2024年第1期36卷 55-65页

作者： yaping yang Liang Jin Yudong Li Nanyan Rao Chang Gong Shunrong Li Jiannan Wu Jinghua Zhao Linxiaoxiao Ding Fengxia Gan Jun Zhang Ruifa Feng Zhenzhen Liu Qiang Liu Breast Tumor Center Sun Yat-sen Memorial HospitalSun Yat-sen UniversityGuangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene RegulationGuangzhou 510120China Department of Thyroid and Breast Surgery Shenzhen Qianhai Shekou Free Trade Zone HospitalShenzhen 518000China Breast and Thyroid Surgery Guilin Medical College Second Affiliated HospitalGuilin 541199China Department of Breast Disease Henan Breast Cancer Centerthe Affiliated Cancer Hospital of Zhengzhou University&Henan Cancer HospitalZhengzhou 450008China

Objective: Despite cardiotoxicity overlap, the trastuzumab/pertuzumab and anthracycline combination remains crucial due to significant benefits. Pegylated liposomal doxorubicin(PLD), a less cardiotoxic anthracycline, was evaluated for efficacy and cardiac safety when combined with cyclophosphamide and followed by taxanes with trastuzumab/pertuzumab in human epidermal growth factor receptor-2(HER2)-positive early breast cancer(BC).Methods: In this multicenter, phase II study, patients with confirmed HER2-positive early BC received four cycles of PLD(30-35 mg/m^(2)) and cyclophosphamide(600 mg/m^(2)), followed by four cycles of taxanes(docetaxel,90-100 mg/m^(2) or nab-paclitaxel, 260 mg/m^(2)), concomitant with eight cycles of trastuzumab(8 mg/kg loading dose,then 6 mg/kg) and pertuzumab(840 mg loading dose, then 420 mg) every 3 weeks. The primary endpoint was total pathological complete response(tp CR, yp T0/is yp N0). Secondary endpoints included breast p CR(bp CR),objective response rate(ORR), disease control rate, rate of breast-conserving surgery(BCS), and safety(with a focus on cardiotoxicity).Results: Between May 27, 2020 and May 11, 2022, 78 patients were treated with surgery, 42(53.8%) of whom had BCS. After neoadjuvant therapy, 47 [60.3%, 95% confidence interval(95% CI), 48.5%-71.2%] patients achieved tp CR, and 49(62.8%) achieved bp CR. ORRs were 76.9%(95% CI, 66.0%-85.7%) and 93.6%(95% CI,85.7%-97.9%) after 4-cycle and 8-cycle neoadjuvant therapy, respectively. Nine(11.5%) patients experienced asymptomatic left ventricular ejection fraction(LVEF) reductions of ≥10% from baseline, all with a minimum value of >55%. No treatment-related abnormal cardiac function changes were observed in mean N-terminal pro-BNP(NT-pro BNP), troponin I, or high-sensitivity ***: This dual HER2-blockade with sequential polychemotherapy showed promising activity with rapid tumor regression in HER2-positive BC. Importantly, this regimen showed an acceptable safety

关键词： Breast cancer HER2-positive breast cancer dual HER2 blockade neoadjuvant therapy sequential therapy

Topological laser on square lattice with gain–loss-induced higher-order corner modes

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Chinese Physics B 2024年第6期33卷 189-195页

作者：廖明杰韦梅松王帅领许静平羊亚平 MOE Key Laboratory of Advanced Micro-Structured Materials School of Physics Science and EngineeringTongji UniversityShanghai 200092China

We investigate the higher-order topological laser in the two-dimensional(2D) coupled-cavity array. By adding staggered on-site gain and loss to the 2D Hermitian array with a trivial phase, the system will emerge degenerate topological corner modes, which are protected by bulk band gap. For such a non-Hermitian model, by adjusting the parameters of the system and introducing the pumping into the cavity at the corner, a single-mode lasing with topological protection ***, single-mode lasing exists over a wide range of pumping strengths. No matter where the cavity is initially stimulated, after enough time evolution, all the cavities belonging to the topological corner mode can emit a stable laser.

关键词： topological corner modes nonlinear saturated gain single-mode lasing

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政府跨区域采购对统一大市场建设的推动作用

财政研究 2024年第1期 118-128,F0003页

作者：陈凯杨亚平暨南大学经济学院

政府是整合国内市场,畅通经济内循环的关键力量。本文通过上市公司异地子公司数据,实证检验了政府跨区域采购与全国统一大市场建设的关系,研究发现:政府跨区域采购通过带动辖区外企业进入采购政府所在地市场,促进了全国统一大市场建设... 详细信息

政府是整合国内市场,畅通经济内循环的关键力量。本文通过上市公司异地子公司数据,实证检验了政府跨区域采购与全国统一大市场建设的关系,研究发现:政府跨区域采购通过带动辖区外企业进入采购政府所在地市场,促进了全国统一大市场建设。营商环境优化和区域市场壁垒降低是其推动统一大市场建设的两个机制。此外,对政府采购持续期长、属于同一省级行政边界内、非国有以及政企关联较弱的企业,政府跨区域采购对统一大市场建设的促进作用更强。文章结论为发挥政府在统一大市场建设中的推动作用提供了新的参考。

关键词：政府跨区域采购营商环境区域市场壁垒全国统一大市场

粤港澳大湾区真的产业结构趋同了吗?——基于制造业产业结构趋同与竞合关系视角

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暨南学报（哲学社会科学版） 2024年第7期46卷 146-164页

作者：杨亚平秦宁暨南大学经济学院

制造业高质量发展是粤港澳大湾区经济发展迈向高端化的重要支撑与主攻方向。粤港澳大湾区内地城市制造业规模优势突出,调整区域产业结构,促进城市产业分工和协作对于提升粤港澳大湾区制造业核心竞争力意义重大。对粤港澳大湾区内地城市... 详细信息

制造业高质量发展是粤港澳大湾区经济发展迈向高端化的重要支撑与主攻方向。粤港澳大湾区内地城市制造业规模优势突出,调整区域产业结构,促进城市产业分工和协作对于提升粤港澳大湾区制造业核心竞争力意义重大。对粤港澳大湾区内地城市制造业2011年、2016年和2021年三个时间点的结构趋同程度、产业竞争和合作网络、行业专业化分工程度以及主导产业特征及其演变研究的结果表明:(1)粤港澳大湾区内地城市之间存在不同程度的制造业结构趋同,其中广州都市圈、深圳都市圈总体表现出合意的趋同,主要是都市圈核心城市与协作城市产业内和产业链分工协作所致。(2)粤港澳大湾区内地城市制造业的产业竞争表现为能级接近城市之间的横向竞争,这种横向竞争无论是否在相同城市圈都存在。产业合作则表现为核心城市与协作城市的纵向合作,主要存在于都市圈内部,且横向竞争在减弱,纵向合作得到加强。(3)核心城市部分行业专业化、集聚现象得到强化,外围城市正经历差异化、专业化发展阶段,这是制造业升级过程中产业在区域范围再次分工、协作的结果。(4)都市圈联系网络的加强、核心城市的辐射带动作用、地理邻近性、港澳地区的积极作用等是促进粤港澳大湾区内地城市制造业结构趋同和产业趋向分工合作的主要原因。

关键词：粤港澳大湾区产业竞争与协作都市圈产业结构趋同

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投资者意见分歧与企业创新

经济与管理 2024年第1期38卷 82-92页

作者：张静杨娅萍石河子大学经济与管理学院新疆石河子832003

基于企业财务决策与资本市场之间的联动性关系,研究投资者意见分歧对企业创新的影响,以及包含传统新闻媒体和网络新闻媒体在内的多源媒体对企业的报道态度异质性对二者关系的影响。结果表明,投资者意见分歧通过管理层情绪效应抑制了企... 详细信息

基于企业财务决策与资本市场之间的联动性关系,研究投资者意见分歧对企业创新的影响,以及包含传统新闻媒体和网络新闻媒体在内的多源媒体对企业的报道态度异质性对二者关系的影响。结果表明,投资者意见分歧通过管理层情绪效应抑制了企业创新。相比传统新闻媒体,网络新闻媒体报道态度异质性更能强化投资者意见分歧对企业创新的抑制作用。进一步研究发现,投资者意见分歧激发管理层悲观情绪效应,并受到股权分散程度的正向影响和高管异质性的负向影响。投资者意见分歧通过管理层情绪效应对探索式创新影响更大,最终降低企业价值。

关键词：投资者意见分歧企业创新管理层情绪效应创新类型

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Observation of maximal intrinsic chirality empowered by dual quasi-bound states in the continuum in a planar metasurface

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Photonics Research 2024年第2期12卷 244-252页

作者： XIN QI JIAJU WU FENG WU SONG ZHAO CHAO WU YUEyang MIN MINA REN YUFEI WANG HAITAO JIANG YUNHUI LI ZHIWEI GUO yaping yang WANHUA ZHENG HONG CHEN YONG SUN MOE Key Laboratory of Advanced Micro-Structured Materials School of Physics Science and EngineeringTongji UniversityShanghai 200092China School of Optoelectronic Engineering Guangdong Polytechnic Normal UniversityGuangzhou 510665China l3 Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology School of Physics Science and EngineeringTongji UniversityShanghai 200092China Department of Electrical Engineering Tongji UniversityShanghai 201804China State Key Laboratory on Integrated Optoelectronics Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China

Metasurfaces with spin-selective transmission play an increasingly critical role in realizing optical chiral responses,especially for strong intrinsic chirality,which is limited to complex three-dimensional *** this paper,we propose a planar metasurface capable of generating maximal intrinsic chirality and achieving dual-band spinselective transmission utilizing dual quasi-bound states in the continuum(quasi-BICs)caused by the structural symmetry ***,the value of circular dichroism(CD)and the transmittance of two kinds of circular polarization states can be arbitrarily controlled by tuning the asymmetry *** CD approaching unity with the maximum transmittance up to 0.95 is experimentally achieved in the dual ***,assisted by chiral BICs,the application in polarization multiplexed near-field image display is also *** work provides a new avenue to flexibly control intrinsic chirality in planar structure and offers an alternative strategy to develop chiral sensing,multiband spin-selective transmission,and high-performance circularly polarized wave *** basic principle and design method of our experiments in the microwave regime can be extended to other bands,such as the terahertz and infrared wavelengths.

关键词： planar intrinsic quasi