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微电子学 2022年第1期52卷 52-57页

作者：张宇张长春姚俊杰袁丰南京邮电大学电子与光学工程学院、微电子学院南京210023

基于65 nm CMOS工艺设计了一种56 Gbit/s PAM4光接收机前端放大电路。前级为差分形式的跨阻放大器,采用共栅前馈型结构降低输入阻抗,并在输入端串联电感,有效提高了跨阻放大器的带宽和灵敏度。后级放大器采用具有线性增益控制的多级级... 详细信息

基于65 nm CMOS工艺设计了一种56 Gbit/s PAM4光接收机前端放大电路。前级为差分形式的跨阻放大器,采用共栅前馈型结构降低输入阻抗,并在输入端串联电感,有效提高了跨阻放大器的带宽和灵敏度。后级放大器采用具有线性增益控制的多级级联可变增益放大器,实现对输出摆幅的自动控制。输出缓冲器采用源极退化技术来拓展带宽。后仿真结果表明,在100 fF光电二极管的寄生电容条件下,所设计的光接收机前端电路的-3 dB带宽为24.4 GHz,最大增益达到66 dBΩ,等效输入噪声电流为17.0 pA·Hz;。在输入电流变化及不同工艺角下,输出眼图抖动较小且张开度良好。当电源电压为1.2 v时,不同工艺角下的平均功耗为42.5 mW。

关键词： PAM4 光接收机前端跨阻放大器自动增益控制可变增益放大器

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Emerging Zn Anode-Based Electrochromic Devices

SMALL SCIENCE

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SMALL SCIENCE 2021年第12期1卷 2100040页

作者： Zhang, Wu Li, Haizeng Yu, William W. Elezzabi, Abdulhakem Y. Shandong Univ Inst Frontier & Interdisciplinary Sci Qingdao 266237 Peoples R China Univ Alberta Dept Elect & Comp Engn Ultrafast Opt & Nanophoton Lab Edmonton AB T6G 2V4 Canada

The development of electrochromic materials has opened the door to the development of numerous devices including smart windows, color displays, optical filters, wearable camouflages, among others. Although the current electrochromic devices do not consume energy while maintaining their colored or colorless states, their bistable operation requires external electrical energy to be consumed during switching. To reduce the energy consumption of an electrochromic device, an emerging Zn anode-based electrochromic device concept was recently introduced to partially retrieve the consumed electrical energy. In this Review, key technological developments and scientific challenges are presented for a broad range of Zn anode-based electrochromic device configurations with emphasis on the inherent distinctions between the Zn anode-based and conventional electrochromic devices. Specifically, a comprehensive comparison of the two classes of electrochromic devices in the high-performance device design is provided. For the electrochromic layer, the methods for obtaining high-quality electrochromic materials and thin films are reviewed. For the electrolytes, the effect of the dual ion system on the electrochromic performance is discussed. Also, some critical but unresolved issues in the device design and fabrication are discussed. The perspectives and outlook at the end of this Review provide recommendations to improve performance for future electrochromic studies.

关键词： electrochromic displays electrochromism smart windows Zn anode-based electrochromic devices

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Molecular engineering of the efficiency of new thieno[3,2-b]thiophene-based metal-free dyes owning different donor and π-linkers groups for use in the dye-sensitised solar cells: a quantum chemical study

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MOLECULAR PHYSICS 2021年第10期119卷 e1913250-e1913250页

作者： Roohi, Hossein Motamedifar, Nafiseh Univ Guilan Dept Chem Computat Quantum Chem Lab Fac Sci Rasht Iran

In this work, the new metal-free organic donor-pi-acceptor (D-pi-A) D1-3L1-4 dyes formed from 2-cyanoacrylic as the electron acceptor (anchoring) group were investigated. Density functional theory (DFT) and time-dependent DFT (TD-DFT) were used to evaluate the electronic, structural, and optical properties of the organic dyes. The theoretical results show that the trend of the calculated HOMO-LUMO energy gap is in good agreement with the photophysical data. Key parameters of the sensitisers in the dye-sensitised solar cell devices associate with the short-circuit current density (J(sc)), electron injection driving force Delta G(inject), total reorganisation energy lambda(total) (lambda(h) and lambda(e)), light-harvesting efficiency (LHE), and open circuit potential (v-oc) were explored. The results show that increasing the length of pi-bridge has a significant effect on the electronic and optical properties of dyes. Further, donor moieties have a strong effect on the performance of dyes. Based on the obtained results, the D3L3 and D3L4 dyes could improve the light-harvesting efficiency, intramolecular charge transfer parameters, and electron injection efficiency. The results of this work can provide valuable insight into the design of DSSCs with high-efficiency.

关键词： DSSC thieno[3 2-b]thiophene photophysical properties DFT TDDFT

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Quantum dots solar cells: Materials innovation, device engineering, and emerging applications

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MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING 2025年 196卷

作者： Baskaran, S. Lakshmi, N. v. S. Sree Rathna Narayana, A. Lakshmi Murugan, C. Arul SKP Engn Coll Dept Elect & Commun Engn Tiruvannamalai 606611 Tamil Nadu India SRM Inst Sci & Technol Dept Elect & Commun Engn Chennai 600089 Tamilnadu India Aditya Univ Dept Elect & Commun Engn Surampalem 533437 Andhra Prades India Karpagam Coll Engn Dept Elect & Telecommun Engn Coimbatore 641032 Tamil Nadu India

Quantum dot solar cells (QDSCs) have emerged as promising candidates for next-generation photovoltaic technologies owing to their unique optoelectronic properties and solution-processability. This critical review examines the evolution and current state of QDSC research spanning over two decades. We trace the progression from early theoretical concepts to recent experimental breakthroughs achieving power conversion efficiencies exceeding 18 % with perovskite quantum dots. The review systematically analyzes quantum confinement effects, materials development pathways, device architectures, and performance enhancement strategies. We critically assess three primary material systems: lead chalcogenides (PbS, PbSe, PbTe), which have demonstrated excellent spectral tunability and near-infrared harvesting;cadmium-based compounds (CdS, CdSe, CdTe), which provided the foundation for early developments;and perovskite quantum dots (CsPbI3, FAPbI3), which represent the current efficiency leaders. Surface engineering emerges as critical for performance, with sophisticated passivation and ligand exchange strategies driving remarkable efficiency improvements. We examine the transformative role of interface design in facilitating charge extraction while minimizing recombination, alongside notable innovations in flexible devices for emerging applications. While substantial challenges remain in stability, scalability, and environmental sustainability, recent progress in environmentally friendly alternatives, defect management, and transport layer optimization suggests pathways toward commercial viability. The review concludes by identifying promising research directions, including tandem integration, advanced characterization techniques, computational design, and machine learning-assisted discovery. This comprehensive analysis provides a framework for understanding quantum dot solar cells' position in the renewable energy landscape and outlines strategic pathways toward realizing thei

关键词： Quantum dot solar cells Perovskite quantum dots Lead chalcogenides Multiple exciton generation Surface passivation Interfacial engineering

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Platform and system design study of a vLEO satellite platform using the IRS RF Helicon-based Plasma Thruster 73

Platform and system design study of a VLEO satellite platfor...

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73rd International Astronautical Congress, IAC 2022

作者： Herdrich, G. Papavramidis, K. Maier, P. Skalden, J. Hild, F. Pfeiffer, M. Fugmann, M. Klinker, S. Fasoulas, S. Souhair, N. Ponti, F. Weikert, S. Sanguesa, J. Tatay Schäff, S. Wiegand, A. Manente, M. Paulon, D. Trezzolani, F. Le Quang, D. Magin, T. Parodi, P. Walpot, L. Duesmann, B. Borras, E.B. Roberts, P.C.E. Smith, K.L. Edmondson, S. Haigh, S.J. Crisp, N.H. Sinpetru, L.A. Macario-Rojas, A. Holmes, B.E.A. Arcos, A. Hanessian, v. Jensen, T.K. Garcia-Almiñana, D. Rodriguez-Donaire, S. Sureda, M. villain, R. Seminari, S. Conte, A. Belkouchi, B. Institute of Space Systems University of Stuttgart Pfaffenwaldring 29 Stuttgart70569 Germany Alma Propulsion Laboratory Department of Industrial Engineering University of Bologna Forli47122 Italy Astos Solutions GmbH Meitnerstr. 8 Stuttgart70563 Germany T4i - Technology for Propulsion and Innovation Via Altinate 125 PD Padova35121 Italy VKI The Von Karman Institute for Fluid Dynamics Waterloosesteenweg 72 Sint-Genesius-RodeB-1640 Belgium ESA - European Space Agency ESTEC Noordwijk Netherlands The University of Manchester Manchester George Begg Building Sackville Street ManchesterM13 9PL United Kingdom Elecnor Deimos Satellite Systems Calle Francia 9 Puertollano13500 Spain GomSpace AS Langagervej 6 Aalborg East9220 Denmark UPC-BarcelonaTECH Carrer de Colom 11 Terrassa Barcelona08222 Spain Euroconsult 86 Boulevard de Sebastopol Paris75003 France

To achieve a feasible lifetime of several years, most satellites are deployed in orbits higher than 400 km. Drag of residual atmosphere causes a slow orbit decay, resulting in the deorbit of the spacecraft. However, e.g. optical instruments or communication devices would significantly benefit from lower altitudes in the range of 150-250 km. A solution to achieve this could be the application of atmosphere-breathing electric propulsion (ABEP), where the residual atmosphere is used to generate continuous thrust that compensates the drag. Within the EU-funded DISCOvERER project, the Institute of Space Systems (IRS) developed an electrode-less RF Helicon-based Plasma Thruster (IPT) suitable for such applications. Ignition and preliminary discharge characterizations of the IPT have been carried out at IRS facilities, using argon, nitrogen and oxygen. To further characterize the plasma plume, a torsional pendulum has been designed to determine the momentum flux in the plasma jet, as well as a three-axis magnetic B-dot probe to carry out time-varying magnetic field measurements. various intake designs were investigated, opening the possibility to conduct studies on potential satellite platforms. A design study for an Earth Observation and Telecommunication satellite operating at 150-250 km with an extended mission lifetime is currently being carried out. The first system assessment focused on the comparison of different spacecraft configurations ("slender body" and "flat body") and intake designs (specular or diffuse) with regard to overall drag and ABEP performance requirements. In this contribution, the proposed thruster characterization methods and the current status of the system assessment are presented. Upcoming experimental studies of the ABEP system and additional activities planned on system assessment are outlined. © 2022 International Astronautical Federation, IAF. All rights reserved.

关键词： Electric discharges

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基于萘核的A-D-A型非稠环受体合成及其高开路电压有机太阳能电池应用

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东华大学学报（自然科学版） 2024年第5期50卷 43-51页

作者：张宇朱雨轩董方亮马在飞王明东华大学材料科学与工程学院高分子材料改性国家重点实验室先进低维材料中心上海

为获得高性能、低成本、结构简单的非稠环电子受体分子,拓展其商业化应用的范围,以3,7-二溴萘-2,6-二醇和2,6-二溴萘-1,5-二醇为原料,通过烷基化反应、Stille偶联、Knoevenagel缩合反应等合成了两个异构化非稠环小分子电子受体26NO4F和1... 详细信息

为获得高性能、低成本、结构简单的非稠环电子受体分子,拓展其商业化应用的范围,以3,7-二溴萘-2,6-二醇和2,6-二溴萘-1,5-二醇为原料,通过烷基化反应、Stille偶联、Knoevenagel缩合反应等合成了两个异构化非稠环小分子电子受体26NO4F和15NO4F,并对其光学吸收、能级、热性能、光伏器件与形貌等进行表征。研究结果表明:在有机光伏器件中,使用PM7作为给体聚合物,PM7:26NO4F和PM7:15NO4F器件的开路电压(voc)均超过1.0 ev,但PM7:26NO4F器件具备更高的短路电流(Jsc)和填充因子(FF),其光电转化效率(PCE)为6.01%,高于PM7:15NO4F器件的5.05%。提出一种基于萘核的高voc电子受体分子设计思路,揭示了烷氧基取代位置对非稠环电子受体性能的影响。

关键词：有机太阳能电池非稠环受体异构化高开路电压

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Wide Band Transimpedance Amplifier using Class AB FvF 3

Wide Band Transimpedance Amplifier using Class AB FVF

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3rd International Conference on Recent developments in Control, Automation and Power engineering (RDCAPE)

作者： Singh, Nidhi Niranjan, vandana Indira Gandhi Delhi Tech Univ Women Dept Elect & Commun Engn New Delhi India

ISBN: (纸本)9781728120683

CMOS technologies have swiftly ameliorated across the past few years. To meet the demand of high performance applications like compact disc players, high definition television (HDTv), radar, medical imaging etc., this employs info conversion system for processing at later stages. Accuracy is highly desirable in many functional systems like optical communication, military surveillance etc. In optical communication system, transimpedance amplifier (TIA) is the fundamental part of optical receiver which is required to convert the low level current signal from the photodiode to an operable output voltage for further processing. Here in this paper, we propose a CMOS TIA using class-AB flipped voltage follower having less output resistance. Simulation results of the proposed circuit in 0.18 mu m technology depicts that the bandwidth and the transimpedance gain obtained are increased by 3.3 times and 1.03 times respectively.

关键词： Flipped voltage follower (FvF) optical Receiver Transimpedance amplifier (TIA) low voltage low power design

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Recent advancement in composite material structurally integrated fibre optic damage assessment system

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Materials Today: Proceedings 2023年

作者： Abdulfatah Abdullah Abdu Saifan Kishan Singh Rawat BN Pathak v Phaninder Reddy Swati Chaudhary A vivek Anand Ginni Nijhawan Ahmed Hameed Kamil School of Chemical Sciences Swami Ramadan Teerth Marathwada University Nanded 431606 Maharashtra India Department of Civil Engineering Graphic Era Deemed to be University Dehradun Uttarakhand 248002 India Department of Mechanical Engineering IMS Engineering College India Department of Aeronautical Engineering Institute of Aeronautical Engineering Hyderabad Telangana India Lloyd Institute of Engineering & Technology Greater Noida Uttar Pradesh India Department of Aeronautical Engineering MLR Institute of Technology Hyderabad Telangana India Lovely Professional University India College of Engineering Technology National University of Science and Technology Dhi Qar Iraq

The idea of using fractures as guiding markers for the implantation of optical fibre implants, serving as sensors to detect damage, has been advanced by numerous specialists across numerous industries. This method examines impact damage in depth, including its underlying causes and outcomes. It has been found that crucial matrix cracking caused by stress and shear might act as a warning sign for errors in embedded systems. The discussion includes the most recent developments in sensor technology and their possible uses. The evaluation of any systemic effects that may result from using such a technique is another crucial component. The results of an early-stage assessment system that used fibre optic technology to assess damage in an aircraft wing's leading edge are presented in this study. A thorough literature review is also done to investigate how embedded sensors affect the characteristics of materials. Although it might not have all the features of computer-aided design (CAD) software, its simplicity makes it a good option for making simple prototypes of transparent structures. Before investing money in more complex projects, this economical strategy allows for a preliminary investigation. During conduction of the experiments, our results show that Kevlar/epoxy panels show resistance to damage unless impacts are specifically focused on the implanted optical fibres. The fragility of these optical fibres can be altered strategically to fit particular applications. It demonstrate the capability of modifying the damage sensitivity of optical fibres through our work. This makes it possible for us to identify the root causes and efficiently track the development of damage zones in response to stress loading.

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Roadmap on structured waves

arXiv

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arXiv 2023年

作者： Bliokh, Konstantin Y. Karimi, Ebrahim Padgett, Miles J. Alonso, Miguel A. Dennis, Mark R. Dudley, Angela Forbes, Andrew Zahedpour, Sina Hancock, Scott W. Milchberg, Howard M. Rotter, Stefan Nori, Franco Özdemir, Şahin K. Bender, Nicholas Cao, Hui Corkum, Paul B. Hernández-García, Carlos Ren, Haoran Kivshar, Yuri Silveirinha, Mário G. Engheta, Nader Rauschenbeutel, Arno Schneeweiss, Philipp volz, Jürgen Leykam, Daniel Smirnova, Daria A. Rong, Kexiu Wang, Bo Hasman, Erez Picardi, Michela F. Zayats, Anatoly v. Rodríguez-Fortuño, Francisco J. Yang, Chenwen Ren, Jie Khanikaev, Alexander B. Alù, Andrea Brasselet, Etienne Shats, Michael verbeeck, Jo Schattschneider, Peter Sarenac, Dusan Cory, David G. Pushin, Dmitry Birk, Michael Gorlach, Alexey Kaminer, Ido Cardano, Filippo Marrucci, Lorenzo Krenn, Mario Marquardt, Florian Theoretical Quantum Physics Laboratory RIKEN Saitama Wako-shi351-0198 Japan Department of Physics University of Ottawa OttawaONK1N 6N5 Canada Department of Physics and Astronomy University of Glasgow GlasgowG12 8QQ United Kingdom Aix-Marseille Univ CNRS Centrale Marseille Institut Fresnel Marseille13013 France The Institute of Optics University of Rochester RochesterNY14627 United States School of Physics and Astronomy University of Birmingham Birmingham United Kingdom School of Physics University of the Witwatersrand Private Bag 3 Johannesburg2050 South Africa Institute for Research in Electronics and Applied Physics University of Maryland College ParkMD20742 United States ViennaA-1040 Austria Department of Physics University of Michigan Ann ArborMI48109-1040 United States The Pennsylvania State University University ParkPA16802 United States Department of Applied Physics Yale University New HavenCT United States Joint Attosecond Science Laboratory National Research Council University of Ottawa OttawaON Canada Grupo de Investigación en Aplicaciones del Láser y Fotónica Departamento de Física Aplicada Universidad de Salamanca SalamancaE-37008 Spain MQ School of Physics and Astronomy Monash University ClaytonVIC3800 Australia Research School of Physics Australian National University CanberraACT2601 Australia Instituto de Telecomunicações Instituto Superior Técnico University of Lisbon Lisboa Portugal Department of Electrical and Systems Engineering University of Pennsylvania PhiladelphiaPA19104 United States Department of Physics Humboldt-Universität zu Berlin Berlin12489 Germany Centre for Quantum Technologies National University of Singapore 3 Science Drive 2 Singapore117543 Singapore Russell Berrie Nanotechnology Institute Helen Diller Quantum Center Technion-Israel Institute of Technology Haifa3200003 Israel Shanghai Jiao Tong University 800 Dongchuan RD. Minhang District Shanghai China Department of Physics

Structured waves are ubiquitous for all areas of wave physics, both classical and quantum, where the wavefields are inhomogeneous and cannot be approximated by a single plane wave. Even the interference of two plane waves, or a single inhomogeneous (evanescent) wave, provides a number of nontrivial phenomena and additional functionalities as compared to a single plane wave. Complex wavefields with inhomogeneities in the amplitude, phase, and polarization, including topological structures and singularities, underpin modern nanooptics and photonics, yet they are equally important, e.g., for quantum matter waves, acoustics, water waves, etc. Structured waves are crucial in optical and electron microscopy, wave propagation and scattering, imaging, communications, quantum optics, topological and non-Hermitian wave systems, quantum condensed-matter systems, optomechanics, plasmonics and metamaterials, optical and acoustic manipulation, and so forth. This Roadmap is written collectively by prominent researchers and aims to survey the role of structured waves in various areas of wave physics. Providing background, current research, and anticipating future developments, it will be of interest to a wide cross-disciplinary audience. © 2023, CC BY.

关键词： Topology

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In Situ Electric-Induced Switchable Transparency and Wettability on Laser-Ablated Bioinspired Paraffin-Impregnated Slippery Surfaces

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ADvANCED SCIENCE 2021年第14期8卷 e2100701页

作者： Chen, Chao Huang, Zhouchen Zhu, Suwan Liu, Bingrui Li, Jiawen Hu, Yanlei Wu, Dong Chu, Jiaru Univ Sci & Technol China Dept Precis Machinery & Precis Instrumentat CAS Key Lab Mech Behav & Design Mat Hefei 230026 Peoples R China

Switchable wetting and optical properties on a surface is synergistically realized by mechanical or temperature stimulus. Unfortunately, in situ controllable wettability together with programmable transparency on 2D/3D surfaces is rarely explored. Herein, Joule-heat-responsive paraffin-impregnated slippery surface (JR-PISS) is reported by the incorporation of lubricant paraffin, superhydrophobic micropillar-arrayed elastomeric membrane, and embedded transparent silver nanowire thin-film heater. Owing to its good flexibility, in situ controllable locomotion for diverse liquids on planar/curved JR-PISS is unfolded by alternately applying/discharging low electric-trigger of 6 v. Simultaneously, optical visibility can be reversibly converted between opaque and transparent modes. The switching principle is that in the presence of Joule-heat, solid paraffin would be melt and swell within 20 s to enable a slippery surface for decreasing light scattering and frictional force derived from contact angle hysteresis (F-CAH). Once Joule-heat is discharged, undulating rough surface would reconfigure by cold-shrinkage of paraffin within 8 s to render light blockage and high F-CAH. Upon its portable merit, in situ thermal management, programmable visibility, as well as steering functionalized droplets by electric-activated JR-PISSs are successfully deployed. Compared with previous Nepenthes-inspired slippery surfaces, the current JR-PISS is more competent for in situ harnessing optical and wetting properties on-demand.

关键词： bioinspired electric-triggered slippery surfaces femtosecond lasers in situ controllable wettability switchable visibility transparent silver nanowire thin-film heater

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