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| 1 | Reconfigurable intelligent surfaces for wireless communications:Overview of hardware designs,channel models,and estimation techniques显示文摘The demanding objectives for the future sixth generation(6G)of wireless communication networks have spurred recent research efforts on novel materials and radio-frequency front-end architectures for wireless connectivity,as well as revolutionary communication and computing paradigms.Among the pioneering candidate technologies for 6G belong the reconfigurable intelligent surfaces(RISs),which are artificial planar structures with integrated electronic circuits that can be programmed to manipulate the incoming electromagnetic field in a wide variety of functionalities.Incorporating RISs in wireless networks have been recently advocated as a revolutionary means to transform any wireless signal propagation environment to a dynamically programmable one,intended for various networking objectives,such as coverage extension and capacity boosting,spatiotemporal focusing with benefits in energy efficiency and secrecy,and low electromagnetic field exposure.Motivated by the recent increasing interests in the field of RISs and the consequent pioneering concept of the RIS-enabled smart wireless environments,in this paper,we overview and taxonomize the latest advances in RIS hardware architectures as well as the most recent developments in the modeling of RIS unit elements and RIS-empowered wireless signal propagation.We also present a thorough overview of the channel estimation approaches for RIS-empowered communications systems,which constitute a prerequisite step for the optimized incorporation of RISs in future wireless networks.Finally,we discuss the relevance of the RIS technology in the latest wireless communication standards,and highlight the current and future standardization activities for the RIS technology and the consequent RIS-empowered wireless networking approaches. | Mengnan Jian George C.Alexandropoulos Ertugrul Basar Chongwen Huang Ruiqi Liu Yuanwei Liu Chau Yuen | 2022 | Intelligent and Converged Networks2022，3，1： | 9 |
| 2 | WSe2 2D p-type semiconductor-based electronic devices for information technology:Design,preparation,and applications显示文摘The pioneering exfoliation of monolayer tungsten diselenide has greatly inspired researchers toward semiconducting applications.WSe2 belongs to a family of transition-metal dichalcogenides.Similar to graphene,WSe2 and analogous dichalcogenides have layered structures with weak van der Waals interactions between two adjacent layers.First,the readers are presented with the fundamentals of WSe2,such as types,morphologies,and properties.Here,we report the characterization principles and practices such as microscopy,spectroscopy,and diffraction.Second,the methods for obtaining high-quality WSe2,such as exfoliation,hydrothermal and chemical vapor deposition,are briefly listed.With advantages of light weight,flexibility,and high quantum efficiency,2D materials may have a niche in optoelectronics as building blocks in p-n junctions.Therefore,we introduce a state-of-the-art demonstration of heterostructure devices employing the p-type WSe2 semiconductor.The device architectures include field-effect transistors,photodetectors,gas sensors,and photovoltaic solar cells.Due to its unique electronic,optical,and energy band properties,WSe2 has been increasingly investigated due to the conductivity of the p-type charge carrier upon palladium contact.Eventually,the dynamic research on WSe2 and van der Waals heterostructures is summarized to arouse the passion of the 2D research community. | Qilin Cheng Jinbo Pang Dehui Sun Jingang Wang Shu Zhang Fan Liu Yuke Chen Ruiqi Yang Na Liang Xiheng Lu Yanchen Ji Jian Wang Congcong Zhang Yuanhua Sang Hong Liu Weijia Zhou | 2020 | InfoMat2020，2，4： | 5 |
| 3 | Selective synthesis of triacetin from glycerol catalyzed by HZSM-5/MCM-41 micro/mesoporous molecular sieve显示文摘HZSM-5/MCM-41 molecular sieve (H-ZM) catalysts with well-defined micro/mesoporous structures were synthesized and showed high performance for selective synthesis of triacetin via the esterification reaction of glycerol with acetic acid. The conversion of glycerol was demonstrated to be 100% and the triacetin selectivity was over 91%, which can be attributed to the synergistic effect regarding suitable acidic property, excellent diffusion efficiency and good stability derived from the combined advantages of microporous molecular sieve HZSM-5 and mesoporous molecular sieve MCM-41. | Jiangyong Liu Zihao Wang Yunlin Sun Ruiqi Jian Panming jian Dan Wang | 2019 | Chinese Journal of Chemical Engineering2019，27，5： | 3 |
| 4 | Analysis and experimental study of MIMO control in refrigeration system显示文摘 | Tian Jian Feng Quanke Zhu Ruiqi | 2008 | Energy Conversion and Management2008，49，： | 1 |
| 5 | Counteracting lineage-specific transcription factor network finely tunes lung adeno-to-squamous transdifferentiation through remodeling tumor immune microenvironment显示文摘Human lung adenosquamous cell carcinoma(LUAS),containing both adenomatous and squamous pathologies,harbors strong plasticity and is significantly associated with poor prognosis.We established an up-to-date comprehensive genomic and transcriptomic landscape of LUAS in 109 Chinese specimens and demonstrated LUAS development via adeno-to-squamous transdifferentiation.Unsupervised transcriptomic clustering and dynamic network biomarker analysis identified an inflammatory subtype as the critical transition stage during LUAS development.Dynamic dysregulation of the counteracting lineage-specific transcription factors(TFs),containing adenomatous TFs NKX2-1 and FOXA2,and squamous TFs TP63 and SOX2,finely tuned the lineage transition via promoting CXCL3/5-mediated neutrophil infiltration.Genomic clustering identified the most malignant subtype featured with STK11-inactivation,and targeting LSD1 through genetic deletion or pharmacological inhibition almost eradicated STK11-deficient lung tumors.These data collectively uncover the comprehensive molecular landscape,oncogenic driver spectrum and therapeutic vulnerability of Chinese LUAS. | Shijie Tang Yun Xue Zhen Qin Zhaoyuan Fang Yihua Sun Chongzhe Yuan Yunjian Pan Yue Zhao Xinyuan Tong Jian Zhang Hsinyi Huang Yuting Chen Liang Hu Dasong Huang Ruiqi Wang Weiguo Zou Yuan Li Roman KThomas Andrea Ventura Kwok-Kin Wong Haiquan Chen Luonan Chen Hongbin Ji | 2023 | National Science Review2023，10，4： | 0 |
| 6 | Exponentially reduced carrier mobility of natural ester via blocking effect of 2D hexagonal boron nitride nanosheets显示文摘In this work,the boron nitride(BN)nanosheets were dispersed in natural esters to fabricate the dielectric nanofluid.Microstructures and chemical compositions of the nanosized BN are determined.The stability,viscosity,and thermal conductivity of the BN nanofluid,were obtained.And the dissipation factor,electrical conductivity,and relative permittivity of the BN nanofluid,were measured.The ion mobilities and migrating times of the nanofluid were measured under different volumetric fractions of BN nanosheets and temperatures.Results show that the electrical conductivity and dissipation factor of the nanofluid decreased by 54%and 48%with the addition of only 0.1%of BN nano-sheets under 110°C.Both the half-reduced carrier mobility of the nanofluid and the declined ion concentration by blocking of BN nanosheet contributed to the exponentially reduced electrical conductivity and enhanced dielectric performances of the BN nano-fluid.The suppression coefficient k is proposed to quantitatively describe the hinder effect of ion migration in nanofluids by 2D BN nanosheet.Results provide a strategy to design and develop advanced nanofluids with low-dielectric loss by aids of surface adsorption of ion and steric hindrance of 2D nanosheets. | Zhengyong Huang Gang He Jian Li Feipeng Wang Ruiqi Zhang Degui Yao | 2021 | High Voltage2021，6，2： | 0 |
| 7 | Preliminary discussion on the ignition mechanism of exploding foil initiators igniting boron potassium nitrate显示文摘Exploding foil initiator(EFI)is a kind of advanced device for initiating explosives,but its function is unstable when it comes to directly igniting pyrotechnics.To solve the problem,this research aims to reveal the ignition mechanism of EFIs directly igniting pyrotechnics.An oscilloscope,a photon Doppler velocimetry,and a plasma spectrum measurement system were employed to obtain information of electric characteristics,impact pressure,and plasma temperature.The results of the electric characteristics and the impact pressure were inconsistent with ignition results.The only thing that the ignition success tests had in common was that their plasma all had a relatively long period of high-temperature duration(HTD).It eventually concludes that the ignition mechanism in this research is the microconvection heat transfer rather than the shock initiation,which differs from that of exploding foil initiators detonating explosives.Furthermore,the methods for evaluating the ignition success of semiconductor bridge initiators are not entirely applicable to the tests mentioned in this paper.The HTD is the critical parameter for judging the ignition success,and it is influenced by two factors:the late time discharge and the energy of the electric explosion.The longer time of the late time discharge and the more energy of the electric explosion,the easier it is to expand the HTD,which improves the probability of the ignition success. | Haotian Jian Guoqiang Zheng Lejian Chen Zheng Ning Guofu Yin Peng Zhu Ruiqi Shen | 2024 | Defence Technology(防务技术)2024，32，2： | 0 |
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