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15th International Conference on Microwave and Millimeter Wave Technology, ICMMT 2023

作者： Meng, Shaoyu Zhao, Chenxi Liu, Huihua Yu, Yiming Wu, Yunqiu Kang, Kai University of Electronic Science and Technology of China School of Electronic Science and Engineering Chengdu611731 China

ISBN: (纸本)9798350338874

This paper presents a d-band Class-F harmonic voltage controlled oscillator (H-VCO) with a novel inductor-slot fusion tank, where the fundamental 35GHz signal and a considerably strong third harmonic at 105GHz are simultaneously excited. The desired 140GHz signal as forth order harmonic is self-mixed by an inherent up-mixer nearby tank and buffered to output through a two stage d-band buffer. A prototype is implemented and post-simulated upon commercial 65nm CMOS technology. EM simulation exhibits satisfying results with a tunning range of 32%, correspondingly 119-165GHz, within which the PN performance at 140GHz achieves -94.7dBc with 1MHz offset. The complete frequency generator draws 100mA current under 1V supply with a peak output power of -4.6dBm. The figure-of-merit (FoM) remains between 176.4 and 178.2 dBc/Hz. © 2023 IEEE.

关键词： Variable frequency oscillators

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Nebula: A 28nm 109.8TOPS/W 3d PNN Accelerator Featuring Adaptive Partition, Multi-Skipping, and Block-Wise Aggregation 72

Nebula: A 28nm 109.8TOPS/W 3D PNN Accelerator Featuring Adap...

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72nd IEEE International Solid-State Circuits Conference, ISSCC 2025

作者： Zhou, Changchun Huang, Tianling Ma, Yanzhe Fu, Yuzhe Song, Xiangjie Qiu, Siyuan Sun, Jiacong Liu, Min Li, Ge He, Yifan Yang, Yuchao Jiao, Hailong Reconova Technologies Xiamen China Peking University Shenzhen China Peking University Beijing China

ISBN: (纸本)9798331541019

Three-dimensional (3d) point clouds are increasingly deployed across various emerging fields, such as autonomous driving, robots, drones, and virtual reality (Vr) [1]-[6]. Pointbased point-cloud neural networks (PNNs) [3]-[6] have demonstrated superior performance in point-cloud analysis, compared to both sparse 3d convolution-based networks [7], [8] and graph-based convolutional neural networks [9], [10]. due to the high computational complexity, low parallelism, and frequent irregular external memory accesses, deploying PNNs in hardware is a great challenge. PNN hardware accelerators have been developed [11]-[20]. However, three key challenges remain unsolved in these accelerators, as illustrated in Fig. 23.4.1. 1) The inherent farthest point sampling (FPS) features serial computation and suffers from quadratic growth in inference latency with rising point counts. The existing uniform block-wise FPS techniques [13], [21] fail to achieve a well-balanced block segmentation, due to a typically non-uniform point distribution. 2) A large amount of redundant operations exist for both discarded points (dPs) and retained points (rPs) in FPS. These operations exist in the sampling operations of rPs (1) in Fig. 23.4.1), as well as grouping (2), convolution (3), and aggregation (4) for dPs, introducing unnecessary energy and latency costs. 3) The irregular memory accesses in the aggregation operation cause significant latency penalties. Channel-wise aggregation in [11] relieves irregularity, yet is unsuitable for large-scale point clouds, as the external memory access of features and the neighbor index table (NIT) is quadratically increased due to the iterative loading of features or the NIT. © 2025 IEEE.

关键词： Convolutional neural networks

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10 λ ×3.26Tb/s CPrI-Equivalent rate 1024-QAM dA-roF Fronthaul in Single-Mode Fiber Using Coherent-Compliant dSP

10 λ ×3.26Tb/s CPRI-Equivalent Rate 1024-QAM DA-RoF Fronth...

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2023 Asia Communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings, ACP/POEM 2023

作者： Zhu, Yixiao Fang, Xiansong Zhang, Chenbo Zhou, Lingjun Zheng, Jiayu Xu, Yicheng Xie, Xiaopeng Zhang, Fan Zhuge, Qunbi Hu, Weisheng Shanghai Jiao Tong University State Key Laboratory of Advanced Optical Communication System and Networks Shanghai China Peking University State Key Laboratory of Advanced Optical Communication System and Networks Beijing China

We experimentally demonstrate high-capacity coherent dA-roF fronthaul leveraging pilot symbol- and BPS-based carrier phase recovery. Up to 4.42- This and 32.6- This CPrI-equivalent rates are achieved with single-carri... 详细信息

ISBN: (纸本)9798350312614

关键词： carrier phase recovery coherent detection CPrI fronthaul radio-over-fiber

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Highly selective adsorption of rhenium by amyloid-like protein material

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Science China(Technological Sciences) 2024年第5期67卷 1417-1430页

作者： MUHAMMAd Arif YANG QingMin KANWAL Aisha ZHAO Jian NAWAZ Mohsan rEN Hao YANG Peng Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education Xi’an Key Laboratory of Polymeric Soft Matter International Joint Research Center on Functional Fiber and Soft Smart TextileSchool of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi’an710119China School of Chemistry and Chemical Engineering Northwestern Polytechnical UniversityXi’an710072China

rhenium separation from molybdenum in molybdenite minerals and waste leachate has become an emerging *** this challenge,we prepared a set of protein-based alkylamine/alkylammonium salts complexes as extractants for selective uptake of rhenium from molybdenum,where the protein component turned into the insoluble amyloid-like structure when its internal disulfide bonds were reduced,namely phase-transition *** them,the phase-transited lysozyme and methyletrioctyleammonium chloride complex(PTL-N263)exhibited the most efficient adsorption at the alkaline condition for the electrostatic interaction between negatively charged metal ions with positively charged center(r_(4)N^(+))in N263,where negatively charged protein residues hindered the ion exchange of Cl^(-)in N263 for larger size Mo species(Mo_(7)O_(24)^(6-))than smaller size re species(reO^(4-)).The adsorption follows the Freundlich model and pseudo-second-order kinetics,which exhibits toplevel adsorption performance with a maximum adsorption capacity of 124 mg/g and a separation factor(β_(re/Mo))of 2.78×10^(3)for *** adsorption capacity per unit area(57.2 mg/(g m^(2)))is 1.6–41 times higher than previously reported adsorbents,and the cost for adsorbing 1 g of re(VII)is$1.07,indicating its industrial *** adsorption strategy can be applied to separating re from Mo in binary solutions and industrial wastewater with other competing ions.

关键词： amyloid phase-transited lysozyme selective adsorption rhenium waste leachate solution

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Continuous-variable Quantum key distribution Access Network

Continuous-variable Quantum Key Distribution Access Network

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2024 Photonics and Electromagnetics research Symposium, PIErS 2024

作者： Wang, Tao Xu, Yuehan Li, Lang Liu, Xu Tan, Zicong Huang, Peng Zeng, Guihua Shanghai Jiao Tong University State Key Laboratory of Advanced Optical Communication Systems and Networks Center of Quantum Sensing and Information Processing Shanghai200240 China

ISBN: (纸本)9798350375909

Quantum key distribution (QKd) networks are crucial for the development of quantum networks and the early stages of the quantum internet, enabling unconditional secure key distribution and guaranteeing data security. However, current QKd networks are still limited in their structure, and are hard to achieve super multi-user access due to high system costs associated with the original point-to-point QKd system. In this paper, we introduce two cost-effective continuous-variable QKd (CV-QKd) access network schemes. The first one is a round-trip multi-band CV-QKd access network. Specifically, the frequency division multiplexing (FdM) technology is used to support multi-user access, and the round-trip optical architecture is adopted to realize low cost. As a result of the encoding properties of CV-QKd, different users can utilize the quadrature components in various frequency bands to transmit key information. The proposed network theoretically supports hundreds of users and can be easily expanded using simple equipment. The second one is a CV-QKd access network based on directed detection. With the help of the Kramers-Kronig relation, the receiver at the optical network unit can obtain the quadrature components just using a photodetector. Besides, it can also solve the practical issues in the plug-and-play structure. Compared with a quantum access network based on the point-to-point QKd system, these two schemes can provide cost-effective solutions for the subsequent large-scale verification and implementation of quantum access networks. © 2024 IEEE.

关键词： Kramers-Kronig relations

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Na-MnO_(x) catalyzed aerobic oxidative cleavage of biomass-derived 1,2-diols to synthesis medium-chain furanic chemicals

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Green Energy & Environment 2022年第5期7卷 957-964页

作者： Qing-Shan Kong Xing-Long Li Hong-Bo Shen Hua-Jian Xu Yao Fu Hefei National Laboratory for Physical Sciences at the Microscale iChEMCAS Key Laboratory of Urban Pollutant ConversionAnhui Province Key Laboratory of Biomass Clean EnergyInstitute of EnergyHefei Comprehensive National Science CenterDepartment of ChemistryUniversity of Science and Technology of ChinaHefei230026China School of Food and Biological Engineering Hefei University of TechnologyHefei230031China Institute of Energy Hefei Comprehensive National Science CenterHefei230009China

Medium-chain furanic chemicals have outstanding practical potential,especially in the application of pharmaceuticals and ***,we describe an eco-friendly and efficient heterogeneous sodium-doped porous sodium manganese oxide catalyst(Na-MnO_(x)) for oxidative cleavage of furanic 1,2-diols into medium-chain furanic aldehyde ***,various high value-added chemicals(diacids and esters,diols,hydroxy acids,acrylics) were synthesized based on the widely applicable and highly selective catalytic *** Na-MnO_(x) was prepared by the coprecipitation method and characterized by Xrd,SEM,XPS and FT-Ir,and *** revealed that Mn species existed in the mixed oxidation states Mn~Ⅱ,Mn~Ⅲ and Mn~Ⅳ.When NaOH concentration up to 1.8 mol L^(-1) during the preparation process of the catalyst,the ratio of Mn^(4+) in the catalyst was the highest,and the yield of product(Furan-2-acrolein) in the model reaction is also ***,this protocol developed a novel and general route for the preparation of medium-chain furanic compounds utilizing cellulose-derived platform molecules.

关键词： furan oxidative catalyst

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Effect of aging treatment on the precipitation transformation and age hardening of Mg-Gd-Y-Zn-Zr alloy

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Journal of Magnesium and Alloys 2023年第12期11卷 4628-4643页

作者： Mu Meng Honglei Zhang Zhi Gao Genxing Lei Jianmin Yu College of Materials Science and Engineering North University of ChinaXueyuan Road 3Taiyuan 030051China Beijing North Vehicle Group Corporation ZhuJiaFen 5th LiBeijing 100072China

In this study, the precipitation transformation and age hardening of solution-treated Mg-9Gd-4Y-2Zn-0.5Zr(wt.%) alloy were investigated at different aging treatment parameters. The precipitation sequences of the alloy aged at 200℃, 250℃ and 300℃ are β’’(dO19) → β’(BCO) → β(FCC), β’’(dO19) → β’(BCO) → β_(1)(FCC) → β(FCC) and β(FCC), respectively. The streaks sequences of the alloy aged at 200℃, 250℃ and 300℃ are SF, SF → 14H-LPSO and SF → 14H-LPSO, respectively. For the alloy aged at 200℃ and 250℃, the increase in hardness with increasing aging time is contributed from the increase in precipitate volume fraction and the transformation from β’’ to β’ phase with basal → prismatic and spherical → spindle-like precipitate changes. The decrease in hardness after the peak-aging stage is attributed to the appearance of micro-sized β precipitates. Because of the smaller size of precipitates and the triangular arrangement of β’ precipitate, the hardness of the alloy aged at 200℃ is higher than that aged at 250℃. For the alloy aged at 300℃, the appearance of only micro-sized β precipitate and its coarsening with increasing aging time leads to the lowest hardness and an overall decrease in hardness with the aging time.

关键词： Mg-Gd-Y-Zn-Zr alloy Aging treatment Precipitation transformation Age hardening

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Biomimetic mesoporous polydopamine nanoparticles for MrI-guided photothermal-enhanced synergistic cascade chemodynamic cancer therapy

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纳米研究（英文版） 2022年第6期15卷 5262-5272页

作者： Nannan Zhang Gaofeng Shu Lin Shen Jiayi ding Enqi Qiao Shiji Fang Jingjing Song Yang Yang Zhongwei Zhao Chenying Lu Jianfei Tu Min Xu Yongzhong du Minjiang Chen Jiansong Ji Key Laboratory of Imaging Diagnosis and Minimally Invasive Interventional Research of Zhejiang Province School of MedicineLishui Hospital of Zhejiaing UniversityLishui 323000China Institute of Pharmaceutics College of Pharmaceutical SciencesZhejiang UniversityHangzhou 310058China

Traditional anticancer treatments fail to significantly improve prognoses,and exploration of novel promising therapeutic modalities is urgently *** this study,multifunctional mesoporous polydopamine nanoparticles(Pt@MPdA/GOx/Fe3+NPs)loaded with glucose oxidase(GOx),Fe ions and ultrasmall Pt nanoparticles(NPs)were prepared for magnetic resonance imaging(MrI)-guided photothermal therapy(PTT)-enhanced chemodynamic therapy(CdT).The oxidation of intratumoral glucose to H2O2 and GOx induced an H2O2-rich microenvironment,and then elevated H2O2 was catalyzed into highly cytotoxic·OH by Fe3+via a Fenton reaction for CdT to induce cancer cell death ***,the heat generated by MPdA NPs under laser irradiation offered a moderate PTT to cascade the CdT ***,Pt NPs can oxidize H2O2 to yield O2,which in turn accelerates the catalytic process of GOx to increase the efficiency of ***,in the high oxidation environment of tumor cells,Pt NPs are oxidized into Pt2+to achieve a tumor chemotherapy *** addition,chelated Fe3+endows the system with an MrI-visible function to monitor the treatment *** conclusion,this study provides a novel MrI-guided PTT-enhanced CdT synergistic nanomedicine platform for cancer therapy.

关键词： mesoporous polydopamine chemodynamic therapy glucose oxidase Fenton reaction synergistic efficacy

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Competitive doping Chemistry for Nickel-rich Layered Oxide Cathode Materials

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ANGEWANdTE CHEMIE-INTErnational EdITION 2022年第21期61卷 e202116865-e202116865页

作者： Guo, Yu-Jie Zhang, Chao-Hui Xin, Sen Shi, Ji-Lei Wang, Wen-Peng Fan, Min Chang, Yu-Xin He, Wei-Huan Wang, Enhui Zou, Yu-Gang Yang, Xin'an Meng, Fanqi Zhang, Yu-Ying Lei, Zhou-Quan Yin, Ya-Xia Guo, Yu-Guo Chinese Acad Sci Inst Chem Beijing Natl Lab Mol Sci CASRes Educ Ctr Excellence Mol SciCAS Key Lab M Beijing 100190 Peoples R China Univ Chinese Acad Sci Beijing Beijing 100049 Peoples R China Chinese Acad Sci Inst Phys Beijing Natl Lab Condensed Matter Phys Beijing 100190 Peoples R China Chinese Acad Sci Inst Phys Beijing Adv Innovat Ctr Mat Genome Engn Beijing 100190 Peoples R China

Chemical modification of electrode materials by heteroatom dopants is crucial for improving storage performance in rechargeable batteries. Electron configurations of different dopants significantly influence the chemical interactions inbetween and the chemical bonding with the host material, yet the underlying mechanism remains unclear. We revealed competitive doping chemistry of Group IIIA elements (boron and aluminum) taking nickel-rich cathode materials as a model. A notable difference between the atomic radii of B and Al accounts for different spatial configurations of the hybridized orbital in bonding with lattice oxygen. density functional theory calculations reveal, Al is preferentially bonded to oxygen and vice versa, and shows a much lower diffusion barrier than B-III. In the case of Al-preoccupation, the bulk diffusion of B-III is hindered. In this way, a B-rich surface and Al-rich bulk is formed, which helps to synergistically stabilize the structural evolution and surface chemistry of the cathode.

关键词： doping Chemistry Electron Configuration Ion diffusion Lithium-Ion Battery Nickel-rich Cathode

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OrB-SLAM3 Front-End Acceleration System Based on ZYNQ Platform

ORB-SLAM3 Front-End Acceleration System Based on ZYNQ Platfo...

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2024 China Automation Congress, CAC 2024

作者： Luo, Qinwei Zhu, Jianfeng Pei, Hailong South China University of Technology Guangzhou China

ISBN: (纸本)9798350368604

OrB-SLAM3, as a highly robust real-time positioning algorithm, can further enhance the platform’s perception of the environment. However, when deployed on small embedded platforms, there are limitations in size, weight, and power, which face the problem of insufficient computing power of embedded platforms to serve SLAM algorithms in real-time. Therefore, this paper is based on the ZYNQ platform to accelerate the most time-consuming feature extraction in the OrB-SLAM3 front-end, in order to achieve real-time positioning of small embedded platforms. Specifically, the Ar0144 binocular camera module is used to collect 640*400 color images in real time, which are converted into grayscale and sent to the FPGA acceleration module to obtain homogenized feature points. After verification, the FPGA acceleration algorithm has a relatively small loss of accuracy, with an average error of about 3.6mm compared to the trajectory running on the PC. Meanwhile, our work achieves a certain balance between running speed and power consumption compared to PC platforms and ZYNQ ArM. © 2024 IEEE.

关键词： feature extraction FPGA Accelerate OrB SLAM

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