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A metasurface-based light-to-microwave transmitter for hybrid wireless communications

Light(Science & Applications) 2022年第6期11卷 1139-1148页

作者： xin ge zhang Ya Lun Sun Bingcheng Zhu Wei Xiang Jiang Qian Yu Han Wei Tian Cheng-Wei Qiu Zaichen zhang Tie Jun Cui State Key Laboratory of Millimeter Waves School of Information Science and EngineeringSoutheast University210096 NanjingChina National Mobile Communications Research Laboratory School of Information Science and EngineeringSoutheast University210096 NanjingChina Frontiers Science Center for Mobile Information Communication and Security Southeast University210096 NanjingChina Purple Mountain Laboratories 211111 NanjingChina Department of Electrical and Computer Engineering National University of SingaporeSingapore 117583Singapore

Signal conversion plays an important role in many applications such as communication,sensing,and *** signal conversion between optical and microwave frequencies is a crucial step to construct hybrid communication systems that combine both optical and microwave wireless technologies to achieve better features,which are highly desirable in the future wireless ***,such a signal conversion process typically requires a complicated relay to perform multiple operations,which will consume additional hardware/time/energy ***,we report a light-to-microwave transmitter based on the time-varying and programmable metasurface integrated with a high-speed photoelectric detection circuit into a *** a transmitter can convert a light intensity signal to two microwave binary frequency shift keying signals by using the dispersion characteristics of the metasurface to implement the frequency division *** illustrate the metasurface-based transmitter,a hybrid wireless communication system that allows dual-channel data transmissions in a light-to-microwave link is demonstrated,and the experimental results show that two different videos can be transmitted and received simultaneously and *** metasurface-enabled signal conversion solution may enrich the functionalities of metasurfaces,and could also stimulate new information-oriented applications.

关键词： microwave surface light

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Light-controllable time-domain digital coding metasurfaces

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Advanced Photonics 2022年第2期4卷 52-58页

作者： xin ge zhang Ya Lun Sun Bingcheng Zhu Wei Xiang Jiang Zaichen zhang Tie Jun Cui Southeast University School of Information Science and EngineeringState Key Laboratory of Millimeter WavesNanjingChina Southeast University School of Information Science and EngineeringNational Mobile Communications Research LaboratoryNanjingChina Purple Mountain Laboratories NanjingChina Southeast University Frontiers Science Center for Mobile Information Communication and SecurityNanjingChina

Programmable metasurfaces enable real-time control of electromagnetic waves in a digital coding manner,which are suitable for implementing time-domain metasurfaces with strong harmonic manipulation ***,the time-domain metasurfaces are usually realized by adopting the wired electrical control method,which is effective and robust,but there are still some ***,we propose a light-controllable time-domain digital coding metasurface consisting of a full-polarization dynamic metasurface and a high-speed photoelectric detection circuit,from which the microwave reflection spectra are manipulated by time-varying light signals with periodic phase *** demonstrated,the light-controllable timedomain digital coding metasurface is illuminated by the light signals with two designed time-coding *** measured results show that the metasurface can well generate symmetrical harmonics and white-noise-like spectra,respectively,under such cases in the reflected *** proposed lightcontrollable time-varying metasurface offers a planar interface to tailor and link microwaves with lights in the time domain,which could promote the development of photoelectric hybrid metasurfaces and related multiphysics applications.

关键词： metasurface light-control time-domain metamaterial

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The neonatal ketone body is important for primordial follicle pool formation and regulates ovarian ageing in mice

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Life Metabolism 2022年第2期1卷 149-160页

作者： xin-Ying Wang xin-ge zhang Yong-Juan Sang Dan-Yang Chong Xiao-Qiang Sheng Hai-Quan Wang Chao-Fan Yang GuiJun Yan Hai-Xiang Sun Chao-Jun Li State Key Laboratory of Reproductive Medicine and China International Joint Research Center on Environment and Human Health Center for Global HealthSchool of Public HealthNanjing Medical UniversityNanjingJiangsu 211166China Center for Reproductive Medicine Department of Obstetrics and GynecologyNanjing Drum Tower Hospitalthe Affiliated Hospital of Nanjing University Medical SchoolNanjing UniversityNanjingJiangsu 210093China Ministry of Education Key Laboratory of Model Animal for Disease Study Model Animal Research Center of Nanjing UniversityNanjingJiangsu 210093China

Adverse nutritional conditions during the perinatal stage are related to early menopause in adulthood;however,the underlying mechanism is still ***,we revealed that colostrum-activated ketone body elevation during the postnatal stage regulated primordial follicle reservoir size and then affected ovarian *** found that the expression of the ketogenesis rate-limiting enzyme 3-hydroxy-3-methylglutaryl-CoA synthase 2(Hmgcs2)was largely enhanced during primordial follicle pool formation after birth and might be activated in the ovaries by *** oxygen species(ROS)elevation in the ovaries leads to follicle apoptosis to deplete damaged follicles,while Hmgcs2 deficiency enhances follicle apoptosis and thus decreases the size of the primordial follicle pool and leads to premature ovarian ageing(POA),which might be related to the activation of cellular endogenous antioxidant *** these defects could be rescued by ketone body administration,which suppressed ROS-activated follicle *** results suggest that the internal metabolic homeostasis of newborn mice is critical for the primordial reservoir and that any intrauterine and perinatal undernutrition could result in POA.

关键词： ketone body primordial follicle pool Hmgcs2 ROS POA

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Infrared-controlled programmable metasurface

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Science Bulletin 2020年第11期65卷 883-888,M0003页

作者： Ya-Lun Sun xin-ge zhang Qian Yu Wei-Xiang Jiang Tie-Jun Cui State Key Laboratory of Millimeter Waves School of Information Science and EngineeringSoutheast UniversityNanjing 210096China

Programmable metasurface enables controlling electromagnetic (EM) waves in real time. By programming the states of active device embedded in metasurface element, the EM properties of the digital metasurface can be changed quickly without redesigning their structures. However, large numbers of long-distance wires are required to connect the programmable metasurface to provide the coded signals from field programmable gate array (FPGA) when controlling the metasurface at a long distance, which is complicated and inconvenient. Here, we propose an infrared-controlled programmable metasurface that can be programmed remotely. The infrared transceiver is able to switch the coding sequences stored in the FPGA controller, thus controlling the voltage on the varactors integrated in the metasurface. Experiment is performed at microwave frequencies, and the measured results verify that the scattering beams of the metasurface sample can be changed remotely by using infrared ray. The proposed infrared-controlled programmable metasurface opens up avenues for constructing a new class of remotely-tuning dynamic metasurfaces.

关键词： Infrared-controlled programmable metasurfaces Remotely-tuning Beam splitting Beam scanning

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Anisotropic programmable metasurfaces with individually controllable 2-bit elements

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Photonics Research 2024年第11期12卷 2660-2666页

作者： xin ge zhang QIU CEN HU QI YANG LI ZHIXIANG HUANG LIANG XU YI QUAN QIAN ZHU BO YUAN WANG XIAO XIAO CHEN TIE JUN CUI WEI XIANG JIANG State Key Laboratory of Millimeter Waves School of Information Science and EngineeringSoutheast University Information Materials and Intelligent Sensing Laboratory of Anhui Province Anhui University Purple Mountain Laboratories

Programmable metasurfaces capable of manipulating electromagnetic (EM) waves in real time provide new opportunities for various exciting applications. However, most previous programmable metasurfaces only work in a single polarization mode and their elements are controlled in a whole or one-dimensional way, which limits functionality and adaptability to complex environments. Here, an anisotropic programmable metasurface with individually controllable elements is proposed to realize real-time and independent dual-polarized EM control in the two-dimension direction. The anisotropic metasurface element is designed using the ingenious cross-over resonant structure integrated with two sets of varactors to achieve 2-bit phase modulation in the respective polarization direction. As a demonstration, an anisotropic programmable metasurface prototype with 21×20 such elements is simulated, fabricated, and measured. Real-time beam scanning and vortex wave generation are verified respectively under two different polarized wave incidences, which indicates that the realized anisotropic programmable metasurface can achieve totally distinct functionalities for two orthogonal polarizations. Our work could push programmable metasurfaces one step closer towards more advanced information devices and complicated applications in communication and imaging.?2024 Chinese Laser Press

关键词： Anisotropy Field programmable gate arrays Liquid crystals Metasurfaces Phase modulation Phase shift

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MICROCALORIMETRIC　AND　DEHYDROgeNATION　ACTIVITY　STUDIES　OF　Pt/γ-Al2O3　AND　Pt-Sn/γ-Al2O3　CATALYSTS

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Chinese Journal of Catalysis 1997年第1期 2-3页

作者： Jia Jifei 1, Shen Jianyi 2, Xu Zhusheng 1, ge xin 2, zhang Tao 1, Lin Liwu 1** (1 Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023 2 Department of Chemistry, Nanjing University, Nanjing 210093)

ＭＩＣＲＯＣＡＬＯＲＩＭＥＴＲＩＣＡＮＤＤＥＨＹＤＲＯＧＥＮＡＴＩＯＮＡＣＴＩＶＩＴＹＳＴＵＤＩＥＳＯＦＰｔ／γ┐Ａｌ２Ｏ３ＡＮＤＰｔ┐Ｓｎ／γ┐Ａｌ２Ｏ３ＣＡＴＡＬＹＳＴＳ＊ＪｉａＪｉｆｅｉ１，ＳｈｅｎＪｉａｎｙｉ... 详细信息

ＭＩＣＲＯＣＡＬＯＲＩＭＥＴＲＩＣＡＮＤＤＥＨＹＤＲＯＧＥＮＡＴＩＯＮＡＣＴＩＶＩＴＹＳＴＵＤＩＥＳＯＦＰｔ／γ┐Ａｌ２Ｏ３ＡＮＤＰｔ┐Ｓｎ／γ┐Ａｌ２Ｏ３ＣＡＴＡＬＹＳＴＳ＊ＪｉａＪｉｆｅｉ１，ＳｈｅｎＪｉａｎｙｉ２，ＸｕＺｈｕｓｈｅｎｇ１，ＧｅＸ...

关键词： Microcalorimetry Supported catalyst Alumina Platinum Tin Dehydrogenation Activity

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铁铈氧化物程序升温还原过程的研究

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无机化学学报 1998年第3期14卷 336-339页

作者：葛欣张惠良王芳南京大学化学系

运用原位穆斯堡尔谱、ＸＲＤ测定等方法剖析了铁铈氧化物的程序升温还原过程。结果表明，金属离子间的相互作用使得氧化铁的还原温度升高，还原反应活化能提高，抗还原能力增强。

关键词：程序升温还原铁铈氧化物铁氧化物催化剂

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Co-Mo-P氧化物催化剂的甲苯选择性氧化制苯甲醛

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无机化学学报 1998年第4期14卷 401-404页

作者：葛欣张惠良时杰陈见强南京大学化学系

研究了一系列铈钼磷复合氧化物对甲苯选择性氧化制苯甲醛反应的催化性能。实验表明：当Ｃｅ∶Ｍｏ∶Ｐ比为２∶１∶０２、温度为４８５℃、空气／甲苯为１０时，反应活性最好。采用了ＸＲＤ、ＩＲ、ＵＶＤＲＳ、ＸＰＳ和其他技术对... 详细信息

研究了一系列铈钼磷复合氧化物对甲苯选择性氧化制苯甲醛反应的催化性能。实验表明：当Ｃｅ∶Ｍｏ∶Ｐ比为２∶１∶０２、温度为４８５℃、空气／甲苯为１０时，反应活性最好。采用了ＸＲＤ、ＩＲ、ＵＶＤＲＳ、ＸＰＳ和其他技术对催化剂样品的组成、结构。

关键词：铈钼磷氧化物甲苯苯甲醛选择氧化催化剂

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Recent progress in constructing fluorinated solid-electrolyte interphases for stable lithium metal anodes

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 270-291页

作者： Di zhang Pengfei Lv Wei Qin xin He Yuanhua He Civil Aircraft Fire Science and Safety Engineering Key Laboratory of Sichuan Province College of Civil Aviation Safety EngineeringCivil Aviation Flight University of ChinaGuanghan 618307China School of Chemical Engineering Sichuan UniversityChengdu 610065China

Lithium metal batteries(LMBs)are emerging as a promising energy storage solution owing to their high energy density and specific ***,the non-uniform plating of lithium and the potential rupture of the solid-electrolyte interphase(SEI)during extended cycling use may result in dendrite growth,which can penetrate the separator and pose significant short-circuit *** a stable SEI is essential for the long-term operation of the ***-rich SEI has garnered significant attention for its ability to effectively passivate electrodes,regulate lithium deposition,and inhibit electrolyte *** the structural components and preparation methods of existing fluorinated SEI is crucial for optimizing lithium metal anode *** paper reviews the research on optimizing LiF passivation interfaces to protect lithium metal *** focuses on four types of compositions in fluorinated SEI that work synergistically to enhance SEI *** instance,combining compounds with LiF can further enhance the mechanical strength and ionic conductivity of the *** metals with LiF significantly improves electrochemical performance at the SEI/anode interface,with a necessary focus on reducing electron tunneling ***,incorporating polymers with LiF offers balanced improvements in interfacial toughness and ionic conductivity,though maintaining structural stability over long cycles remains a critical area for future *** alloys combined with LiF increase surface energy and lithium affinity,challenges such as dendrite growth and volume expansion *** summary,this paper emphasizes the crucial role of interfacial structures in LMBs and offers comprehensive guidance for future design and development efforts in battery technology.

关键词： LiF lithium metal anodes solid-electrolyte interphase interface cycling stability

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Bidirectional regulation of the brain-gut-microbiota axis following traumatic brain injury

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Neural Regeneration Research 2025年第8期20卷 2153-2168页

作者： xinyu You Lin Niu Jiafeng Fu Shining ge Jiangwei Shi Yanjun zhang Pengwei Zhuang National Key Laboratory of Chinese Medicine Modernization Tianjin University of Traditional Chinese MedicineTianjinChina Haihe Laboratory of Modern Chinese Medicine Tianjin University of Traditional Chinese MedicineTianjinChina First Teaching Hospital of Tianjin University of Traditional Chinese Medicine TianjinChina National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion TianjinChina

Traumatic brain injury is a prevalent disorder of the central nervous *** addition to primary brain parenchymal damage,the enduring biological consequences of traumatic brain injury pose long-term risks for patients with traumatic brain injury;however,the underlying pathogenesis remains unclear,and effective intervention methods are *** dysfunction is a significant consequence of traumatic brain *** the most densely innervated peripheral tissue in the body,the gut possesses multiple pathways for the establishment of a bidirectional“brain-gut axis”with the central nervous *** gut harbors a vast microbial community,and alterations of the gut niche contribute to the progression of traumatic brain injury and its unfavorable prognosis through neuronal,hormonal,and immune pathways.A comprehensive understanding of microbiota-mediated peripheral neuroimmunomodulation mechanisms is needed to enhance treatment strategies for traumatic brain injury and its associated *** comprehensively reviewed alterations in the gut microecological environment following traumatic brain injury,with a specific focus on the complex biological processes of peripheral nerves,immunity,and microbes triggered by traumatic brain injury,encompassing autonomic dysfunction,neuroendocrine disturbances,peripheral immunosuppression,increased intestinal barrier permeability,compromised responses of sensory nerves to microorganisms,and potential effector nuclei in the central nervous system influenced by gut ***,we reviewed the mechanisms underlying secondary biological injury and the dynamic pathological responses that occur following injury to enhance our current understanding of how peripheral pathways impact the outcome of patients with traumatic brain *** review aimed to propose a conceptual model for future risk assessment of central nervous system-related diseases while elucidating novel insights into the bidirectional effec

关键词： traumatic brain injury brain-gut-microbiome axis gut microbiota neuroimmune immunosuppression host defense vagal afferents bacterial infection dorsal root ganglia nociception neural circuitry

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