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| 1 | Synthesis of Porous NiO Nanocrystals with Controllable Surface Area and Their Application as Supercapacitor Electrodes显示文摘We report a facile way to grow various porous NiO nanostructures including nanoslices,nanoplates,and nanocolumns,which show a structure-dependence in their specific charge capacitances.The formation of controllable porosity is due to the dehydration and re-crystallization of β-Ni(OH)_(2) nanoplates synthesized by a hydrothermal process.Thermogravimetric analysis shows that the decomposition temperature of the β-Ni(OH)_(2) nanostructures is related to their morphology.In electrochemical tests,the porous NiO nanostructures show stable cycling performance with retention of specific capacitance over 1000 cycles.Interestingly,the formation of nanocolumns by the stacking of β-Ni(OH)_(2) nanoslices/plates favors the creation of small pores in the NiO nanocrystals obtained after annealing,and the surface area is over five times larger than that of NiO nanoslices and nanoplates.Consequently,the specific capacitance of the porous NiO nanocolumns(390 F/g)is significantly higher than that of the nanoslices(176 F/g)or nanoplates(285 F/g)at a discharge current of 5 A/g.This approach provides a clear illustration of the process-structure-property relationship in nanocrystal synthesis and potentially offers strategies to enhance the performance of supercapacitor electrodes. | Xiaojun Zhang Wenhui Shi Jixin Zhu Weiyun Zhao Jan Ma Subodh Mhaisalkar Tuti Lim Maria Yanhui Yang Hua Zhang Huey Hoon Hng Qingyu Yan | 2010 | Nano Research2010，3，9： | 24 |
| 2 | High thermal conductivity of suspended few-layer hexagonal boron nitride sheets显示文摘推迟的很少层的热传导六角形的硼氮化物(h-BN ) 表试验性地用一个 noncontact micro-Raman 光谱学方法被调查。为单层(1L ) 的一阶的温度系数, bilayer (2L ) 并且九层(9L ) h-BN 表被测量是(当时, electrospinning 准备的 3.41 xide nanofibers 被期望减少了热电导率与体积样品相比。自从它包含复杂样品准备方法,热电导率正在质问的 nanofibers 的大小。在这个工作,我们在场对单个 nanofiber 的热电导率的大小合适的一个新奇方法。一 microelectro 机械(MEMS ) 设备被设计了并且制作了在单个 nanofiber 上执行热传导性大小。一个特殊 Si 模板被设计收集并且转单个 nanofibers 到 MEMS 设备名上吗? | Haiqing Zhou Jixin Zhu Zheng Liu Zheng Yan Xiujun Fan Jian Lin Gunuk Wang Qingyu Yan Ting Yu Pulickel M. Ajayan James M. Tour | 2014 | Nano Research2014，7，8： | 9 |
| 3 | Physicochemical water quality parameters in typical rice-crayfish integrated systems(RCIS)in China显示文摘To determine the variation of water quality in rice-crayfish(Procambarus clarkii)integrated systems(RCIS)in China,eleven water quality parameters were measured monthly in a typical RCIS located in Qianjiang City(Hubei Province)from July 2014 to June 2015,the parameters were analyzed with principal component analysis(PCA)and compared between the trenches and rice areas during the rice fallow period(Nov-May).The trench and rice area comprehensive results showed that pH(7.48-8.68),NH_(4)^(+)-N(0.2-1.09 mg/L),NO_(2)^(-)-N(<0.052 mg/L)and conductivity(435-951μS/cm)were within the suitable ranges for P.clarkii and that turbidity(TU)was high during the crayfish harvesting and rice planting season.Annual averages of total nitrogen(TN),total phosphorus(TP),permanganate index(CODMn),and chlorophyll a(Chl.a)content were<2(except in Nov-Dec),0.25,10 mg/L,and 50 mg/m^(3)(especially in Nov-May,<10 mg/m^(3)),respectively.Dissolved oxygen(DO)was below 4 mg/L in Mar-Sep,with a minimum of~1 mg/L,and much higher in Oct-Feb.The maximum and minimum monthly average water temperature(WT)were 31.4°C in July and 5.7°C in December,while the maximum and minimum instantaneous WT were 39.7°C and 2.5°C,respectively.PCA analysis showed that the first three axes,which were mainly correlated with DO,WT and nutrient level,described most information of the parameters,and parameters showed seasonal changes.Some differences were observed in water parameters between the trenches and rice areas,i.e.,trenches generally had higher TU,WT and DO,and lower TN,TP and CODMn,although no significant differences were found in some months and some parameters.The study revealed relatively low water nutrient level,probable extreme WT and DO level in some seasons,and certain differences between the trenches and rice areas in typical CRIS in China.Accordingly,some measures should be taken to improve the negative parameters:1)enhance the water fertility;2)increase DO,especially in Mar-Sep;3)increase the trench and water depth to avoid extreme WT.And water quality management should be addressed in both trenches and rice areas. | Jixin Yu Yan Ren Tao Xu Wei Li Mantang Xiong Tanglin Zhang Zhongjie Li Jiashou Liu | 2018 | International Journal of Agricultural and Biological Engineering2018，11，3： | 6 |
| 4 | A Low Power,High Sensitivity SiGe HBT Static Frequency Divider up to 90 GHz for Millimeter-Wave Application显示文摘A layout and connection optimization for static frequency divider is presented. The layout optimization provides a new circle topology transistors placement and reasonable connection structure, which reduces the parasitic effectively and enables self-oscillation frequency enhancement. Besides, bandwidth enhancement techniques based on a center-tap capacitor in input balun design and inductive peaking in latch design are adopted to improve further high frequency performance with low power consumption. As a proof of concept, design of a divide-by-2 static frequency divider in 0.13 μm SiGe BiCMOS technology is reported. With single-ended input clock signal, the divider is measured to be operated from 40 to 90 GHz. Phase noise measurements of a 90 GHz input clock signal indicate ideal behavior with no measurable noise contribution from the divider. The divider followed by a buffer that can deliver more than-10 dBm output power, which is sufficient to drive succeeding stage. To the author's knowledge, the divider exhibits a competitive power dissipation and the highest FOM among silicon based frequency dividers that operating higher than 70 GHz. | Peigen Zhou Jixin Chen Pinpin Yan Debin Hou Wei Hong | 2019 | China Communications2019，16，2： | 2 |
| 5 | Controllable synthesis of grain boundary-enriched Pt nanoworms decorated on graphitic carbon nanosheets for ultrahigh methanol oxidation catalytic activity显示文摘Although one-dimensional Pt nanocrystals have long been regarded as ideal electrode catalysts for fuel cells,the synthetic techniques commonly involve the use of various complicated templates or surfactants,which have largely hampered their large-scale industrial application.Herein,we present a convenient and cost-effective approach to the stereoassembly of quasi-one-dimensional grain boundary-enriched Pt nanoworms on nitrogen-doped low-defect graphitic carbon nanosheets(Pt NWs/NL-CNS).Benefiting from its numerous catalytically active grain boundaries as well as optimized electronic structure,the as-derived Pt NWs/NL-CNS catalyst possesses exceptionally good electrocatalytic properties for methanol oxidation,including an ultrahigh mass activity of 1949.5 mA mg^(-1), reliable long-term durability,and strong poison tolerance,affording one of the most active Pt-based electrocatalysts for methanol oxidation reaction.Density functional theory calculation further reveals that the formation of worm-shape Pt morphology is attributed to the modified electronic structure as well as controllable defect density of the carbon matrix,which could also weaken the adsorption ability of Pt towards CO molecule and meanwhile synergistically promotes the catalytic reaction kinetics. | Huajie Huang Yujie Wei Ying Yang Minmin Yan Haiyan He Quanguo Jiang Xiaofei Yang Jixin Zhu | 2021 | Journal of Energy Chemistry2021，30，6： | 2 |
| 6 | Metallic vanadium trioxide intercalated with phase transformation for advanced aqueous zinc-ion batteries显示文摘Aqueous zinc-ion batteries have broad application prospects due to the eco-friendliness,cost-economy and high safety.However,the scarcity of high-performance cathodes with outstanding rate capability and long lifespan has affected their development.Herein,we report a metallic vanadium trioxide material intercalated with phase transformation as cathode applied in aqueous zinc-ion batteries.It offers satisfactory electrochemical performances with a high specific capacity(435 mAh g^(-1) at 0.5 A g^(-1)),decent power density(5.23 kW kg^(-1))and desired energy density(331 Wh kg^(-1)),as well as good cyclability.The superior performance originates from the stable structure and fast Zn^(2+)diffusion,enabled by the pre-intercalation of Zn^(2+)and water molecules. | Kang Hu Danqing Jin Yao Zhang Longwei Ke Huan Shang Yan Yan Huijuan Lin Kun Rui Jixin Zhu | 2021 | Journal of Energy Chemistry2021，30，10： | 1 |
| 7 | A high-efficiency, high harmonic rejection E-band SiGe HBT frequency tripler for high-resolution radar application显示文摘Dear editor,With the advances in silicon-based technologies,high performance, low-cost frequency-modulated continuous wave (FMCW) radar sensors enabling advanced driver-assistance convenience in vehicles have been developed extensively in recent years . | Peigen ZHOU Pinpin YAN Jixin CHEN Debin HOU Wei HONG | 2019 | Science China(Information Sciences)2019，62，6： | 1 |
| 8 | An Effective Method for the Fabrication of Few‐Layer‐Thick Inorganic Nanosheets显示文摘 | Zhiyuan Zeng Ting Sun Jixin Zhu Xiao Huang Zongyou Yin Gang Lu Zhanxi Fan Qingyu Yan Huey Hoon Hng Hua Zhang | 2012 | Angew. Chem. Int. Ed2012，，36： | 1 |
| 9 | Millimeter-wave wireless communications for home network in fiber-to-the-room scenario显示文摘Millimeter-wave(mmWave)technology has been well studied for both outdoor long-distance transmission and indoor short-range communication.In the recently emerging fiber-to-the-room(FTTR)architecture in the home network of the fifth generation fixed networks(F5G),mmWave technology can be cascaded well to a new optical network terminal in the room to enable extremely high data rate communication(i.e.,>10 Gb/s).In the FTTR+mmWave scenario,the rapid degradation of the mmWave signal in long-distance transmission and the significant loss against wall penetration are no longer the bottlenecks for real application.Moreover,the surrounding walls of every room provide excellent isolation to avoid interference and guarantee security.This paper provides insights and analysis for the new FTTR+mmWave architecture to improve the customer experience in future broadband services such as immersive audiovisual videos. | Chao HE Zhixiong REN Xiang WANG Yan ZENG Jian FANG Debin HOU Le KUAI Rong LU Shilin YANG Zhe CHEN Jixin CHEN | 2021 | Frontiers of Information Technology & Electronic Engineering2021，22，4： | 1 |
| 10 | Li 3 V 2 (PO 4 ) 3 nanocrystals embedded in a nanoporous carbon matrix supported on reduced graphene oxide sheets: Binder-free and high rate cathode material for lithium-ion batteries显示文摘 | Xianhong Rui Daohao Sim Kangming Wong Jixin Zhu Weiling Liu Chen Xu Huiteng Tan Ni Xiao Huey Hoon Hng Tuti Mariana Lim Qingyu Yan | 2012 | Journal of Power Sources2012，，： | 1 |
| 11 | Research on Silicon-Based Terahertz Communication Integrated Circuits显示文摘With the increasing number of users and emerging new applications, the demand for mobile data traffic is growing rapidly. The limited spectrum resources of the traditional microwave and millimeter-wave frequency bands can no longer support the future wireless communication systems with higher system capacity and data throughput. The terahertz(THz) frequency bands have abundant spectrum resources, which can provide sufficient bandwidth to expand channel capacity and increase transmission data rate. In addition, with the rapid development of silicon-based semiconductor technology,its characteristic size keeps decreasing, and the radio frequency performance of active devices is gradually approaching the performance of III-V semiconductor technology. The realization of THz communication systems based on low-cost, high-stability, and easy-to-integrate silicon-based process has become a feasible solution. This review summarizes the reported silicon-based THz communication systems, as well as the key sub-circuit chips in these systems, including the local oscillator, power amplifier, low noise amplifier, on-chip antenna and transceiver chip, etc. | ZHOU Peigen CHEN Jixin TANG Siyuan YU Jiayang WANG Chen LI Huanbo LU Haiyan YAN Pinpin HOU Debin CHEN Zhe HONG Wei | 2022 | Chinese Journal of Electronics2022，31，3： | 0 |
| 12 | A 143.2–168.8-GHz signal source with 5.6 dBm peak output power in a 130-nm SiGe BiCMOS process显示文摘Dear editor,With the development of silicon-based processes,a variety of RF devices have become possible to be designed at frequencies above 100 GHz[1].Besides,sub-terahertz systems operating in D-Band have the potential to be applied to a wide range of applications,such as high-resolution radar,energy detection,and broadband ultra high-speed communication[2]. | Peigen ZHOU Jixin CHEN Pinpin YAN Zhigang PENG Debin HOU Zhe CHEN Wei HONG | 2020 | Science China(Information Sciences)2020，63，12： | 0 |
| 13 | A compact MIMO automotive radar using phase-aligned daisy-chain cascading topology and elevation compensation for 2D angle estimation显示文摘To design a high-performance multiple-input multiple-output(MIMO)automotive radar system with simple hardware architecture,this study presents a daisy-chain cascading design scheme,implementing the two-dimensional(2D)nonuniform antenna array with high-gain antennas for 2D angle estimation.The improvements in the designed radar system are primarily divided into three parts.First,a daisy-chain cascading topology will cause severe phase deviations;hence,we rigorously analyzed the influence of the phase deviations and proposed a low-cost phase-alignment procedure to address this concern.Second,to obtain 2D angular resolution and a longer working range with limited channels,a novel 2D antenna array design principle facilitating the arrangement of high-gain antennas was presented.Third,a new phase compensation procedure was developed to mitigate the deterioration of angular accuracy in the elevation plane.Based on the proposed design scheme,a frequency-modulated continuous-wave(FMCW)radar prototype with two transceiver chips,i.e.,six transmitters and eight receivers,was successfully built.The prototype radar system’s performance was tested through an anechoic chamber and outdoor experiments.Consequently,an angular resolution of 3.5°in azimuth and 12.5°in elevation was featured in the anechoic chamber.Furthermore,using the 2D conventional beam-forming,the outdoor experiment captured high-resolution 2D angular estimation results,thus demonstrating the superior performance of the designed prototype system. | Rui ZHOU Jixin CHEN Yan HUANG Gang XU Debin HOU Bangjie ZHANG Zekun LI Yu XIANG Wei HONG | 2023 | Science China(Information Sciences)2023，66，6： | 0 |
| 14 | Recent progress in carbon-based electrochemical catalysts:From structure design to potential applications显示文摘Advances in research and development of carbon-based metal-free electrocatalysts(C-MFECs)have provided potential alternatives to precious metal catalysts for various reactions important to renewable energy and environmental remediation.This timely but critical review provides an overview of recent breakthroughs(within the past 5 years or so)on C-MFECs in all aspects,including the design and regulation of intrinsic catalytic active sites,design and synthesis of carbon composite and hybrid carbon catalysts,mechanism understanding,and potential applications in clean energy storage and energy/chemical conversion.Current challenges and future opportunities in the field of metal-free carbon electrocatalysis are also discussed to provide forward-looking opportunities for their potential applications in various catalytic processes of practical significance. | Jixin Yan Fenghui Ye Quanbin Dai Xinyue Ma Zhihai Fang Liming Dai Chuangang Hu | 2023 | Nano Research Energy2023，2，2： | 0 |
| 15 | Petrophysical properties and their influencing factors of carbonates in the fourth member of Sinian Dengying Formation, Sichuan Basin, SW China显示文摘Based on the measurements of petrological, petrophysical and elastic properties of the samples of different sedimentary facies in the fourth member of Sinian Dengying Formation (Deng 4 Member) in the Sichuan Basin, the diagenetic processes of reservoirs of different sedimentary facies and their controls on the petrophysical properties were discussed. The results show that cracks and mineral composition jointly control the petrophysical properties, and both are significantly influenced by sedimentary environment and diagenesis. The microbial dolomite of mound-shoal facies mainly experienced multi-stage dolomitization, penecontemporaneous dissolution, tectonic rupture and hydrothermal/organic acid dissolution processes, giving rise to cracks and dissolved pores. The grannular dolomite of inter-mound-shoal bottomland or dolomitic lagoon facies mainly underwent mechanical compaction, burial dolomitization and tectonic-hydrothermal action, creating cracks and intercrystalline pores. The diagenesis related to crack development increases the pressure- and saturation-dependent effects of samples, leading to significant decrease in the compressional wave impedance and Poisson's ratio. Dolomitization changes the properties of mineral particles, resulting in a Poisson's ratio close to dolomite. The muddy, siliceous and calcareous sediments in the low-energy environment lead to the decrease of impedance and the differential change of Poisson's ratio (significantly increased or decreased). The samples with both cracks and dissolved pores show high P-wave velocity dispersion characteristics, and the P-wave velocity dispersion of samples with only fractures or pores is the lowest. | WANG Jiaqing DENG Jixin LIU Zhonghua YAN Longlong XIA Hui | 2023 | Petroleum Exploration and Development2023，50，6： | 0 |
| 16 | Guidelines for the diagnosis and treatment of pancreatic cancer in China (2021)显示文摘The incidence of pancreatic cancer has been rising worldwide,and its clinical diagnosis and treatment remain a great challenge.To present the update and improvements in the clinical diagnosis and treatment of pancreatic cancer in recent years,Chinese Pancreatic Association,the Chinese Society of Surgery,Chinese Medical Association revised the Guidelines for the Diagnosis and Treatment of Pancreatic Cancer in China(2014)after reviewing evidence-based and problem-oriented literature published during 2015-2021,mainly focusing on highlight issues regarding diagnosis and surgical treatment of pancreatic cancer,conversion strategies for locally advanced pancreatic cancer,treatment of pancreatic cancer with oligo metastasis,adjuvant and neoadjuvant therapy,standardized processing of surgical specimens and evaluation of surgical margin status,systemic treatment for unresectable pancreatic cancer,genetic testing,as well as postoperative follow up of patients with pancreatic cancer.Forty recommendation items were finally proposed based on the above issues,and the quality of evidence and strength of recommendations were graded using the Grades of Recommendation,Assessment,Development,and Evaluation system.This guideline aims to standardize the clinical diagnosis and therapy,especially surgical treatment of pancreatic cancer in China,and further improve the prognosis of patients with pancreatic cancer. | Yinmo Yang Xueli Bai Dapeng Bian Shouwang Cai Rufu Chen Feng Cao Menghua Dai Chihua Fang Deliang Fu Chunlin Ge Xiaochao Guo Chunyi Hao Jihui Hao Heguang Huang Zhixiang Jian Gang Jin Fei Li Haimin Li Shengping Li Weiqin Li Yixiong Li Hongzhen Li Tingbo Liang Xubao Liu Wenhui Lou Yi Miao Yiping Mou Chenghong Peng Renyi Qin Chenghao Shao Bei Sun Guang Tan Xiaodong Tian Huaizhi Wang Lei Wang Wei Wang Weilin Wang Junmin Wei Heshui Wu Wenming Wu Zheng Wu Jingyong Xu Changqing Yan Xiaoyu Yin Xianjun Yu Chunhui Yuan Taiping Zhang Jixin Zhang Jun Zhou Yupei Zhao on behalf of the Chinese Pancreatic Surgery Association | 2021 | Journal of Pancreatology2021，4，2： | 0 |
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