|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Rock burst prevention based on dissipative structure theory显示文摘Dynamic collapses of deeply mined coal rocks are severe.In order to explore new ideas for rock burst prevention,the relationship between entropy equations and dissipative structure was studied,and a concept-rock burst activity system(RAS) was proposed and its entropy was analyzed.The energy features of RAS were analyzed,and the relationship between electromagnetic radiation(EMR) intensity E and dissipated energy Ud was initially established.We suggest that rock burst normally happens only when diS deS in RAS;RAS is the dissipative structure before collapse,and after which it become a new orderly structure,i.e.,a ''dead'',a statically orderly structure.We advanced that the effective way to prevent rock burst is to introduce entropy to the system for it keeps the system away from the dissipative structure.E and Ud of RAS are positively related,which is used as a bridge between dissipative structure theory and rock burst prevention engineering applications.Based on this,and using the data of rock burst prevention for working face No.250205up of Yanbei coal mine,an engineering verification for the dissipative structure of RAS was carried out,which showed good results. | Song Dazhao Wang Enyuan Li Nan Jin Mingyue Xue Shipeng | 2012 | International Journal of Mining Science and Technology2012，22，2： | 17 |
| 2 | Infrared radiation signature of exhaust plume from solid propellants with different energy characteristics显示文摘The infrared radiation signature of the plume from solid propellants with different energy characteristics is not the same. Three kinds of double-base propellants of different energy characteristics are chosen to measure the infrared spectral radiance from 1000 cm 1 to 4500 cm 1 of their plumes. The radiative spectrum is obtained in the tests. The experimental results indicate that the infrared radiation of the plume is determined by the energy characteristics of the propellant. The radiative transfer calculation models of the exhaust plume for the solid propellants are established. By including the chemical reaction source term and the radiation source term into the energy equation, the plume field and the radiative transfer are solved in a coupled way. The calculated results are consistent with the experimental data, so the reliability of the models is confirmed. The temperature distribution and the extent of the afterburning of the plume are distinct for the propellants of different energy characteristics, therefore the plume radiation varies for different propellants. The temperature of the fluid cell in the plume will increase or decrease to some extent by the influence of the radiation term. | Wang Weichen Li Shipeng Zhang Qiao Wang Ningfei | 2013 | Chinese Journal of Aeronautics2013，26，3： | 14 |
| 3 | Gene expression signatures for phlegm-dampness constitution of Chinese Medicine显示文摘Dear Editor,The term'individualized medicine'was first used in Biochemistry Individuality in 1956 by Williams(Williams et al.,1956).With the emergence of the post-genome era in the21st century,individualized precision medicine has attracted increasing attention.In traditional Chinese medicine(TCM),there is also concept of individualized medicine,which is known as the Chinese constitutional theory,proposed in the1970s(Wang,2012).According to this theory,the | Lingru Li Juan Feng Haiqiang Yao Lan Xie Yu Chen Lingling Yang Shujuan Hou Shipeng Zhao Ranran Sun Yanling Wu Tongtong Bai Yingshuai Li Ruoxi Yu Ji Wang Qi Wang | 2017 | Science China(Life Sciences)2017，60，1： | 13 |
| 4 | Progress of the satellite laser ranging system TROS1000显示文摘The mobile satellite laser ranging system TROS1000, successfully developed in 2010, achieves a high repetition rate and enables daytime laser ranging. Its measurement range has reached up to 36000 km with an accuracy as precise as 1 cm. Using recent observations in Wuhan, Jiufeng, Xianning, and Rongcheng, Shandong, we introduce the progress made using this mobile observation system. | Guo Tangyong Wang Peiyuan Li Xin Zhu Wei Zou Tong Li Shipeng Luo Qingshan | 2015 | Geodesy and Geodynamics2015，6，1： | 7 |
| 5 | 5-Ethynyl-2′-deoxyuridine as a molecular probe of cell proliferation for high-content siRNA screening assay by “click” chemistry显示文摘Labelling and identification of proliferating cells is important for the study of physiological or pathological processes in high-content screening (HCS) assays. Here we describe ethynyl deoxyuridine (EdU) as a biomarker for the assessment of cell proliferation and clearly demonstrate the feasibility of the EdU-labelling method for use in HCS assays. EdU detection is highly robust, reproducible, technically simple, and well suited for automated segmentation, which provides an excellent al- ternative for setting up multiplexed HCS assays of siRNA, miRNA and small-molecule libraries. | CHEN MiaoJuan QU DeZhong CHI WeiLin WANG Wei REN XiaoShuai CONG ShuJie LIANG PeiZhou FENG ShiPeng ZHANG BiLiang | 2011 | Science China Chemistry2011，54，11： | 6 |
| 6 | Cancer metabolism and tumor microenvironment:fostering each other?显示文摘The changes associated with malignancy are not only in cancer cells but also in environment in which cancer cells live.Metabolic reprogramming supports tumor cells’high demand of biogenesis for their rapid proliferation,and helps tumor cells to survive under certain genetic or environmental stresses.Emerging evidence suggests that metabolic alteration is ultimately and tightly associated with genetic changes,in particular the dysregulation of key oncogenic and tumor suppressive signaling pathways.Cancer cells activate HIF signaling even in the presence of oxygen and in the absence of growth factor stimulation.This cancer metabolic phenotype,described firstly by German physiologist Otto Warburg,ensures enhanced glycolytic metabolism for the biosynthesis of macromolecules.The conception of metabolite signaling,i.e.,metabolites are regulators of cell signaling,provides novel insights into how reactive oxygen species(ROS)and other metabolites deregulation may regulate redox homeostasis,epigenetics,and proliferation of cancer cells.Moreover,the unveiling of noncanonical functions of metabolic enzymes,such as the moonlighting functions of phosphoglycerate kinase 1(PGK1),reassures the importance of metabolism in cancer development.The metabolic,microRNAs,and ncRNAs alterations in cancer cells can be sorted and delivered either to intercellular matrix or to cancer adjacent cells to shape cancer microenvironment via media such as exosome.Among them,cancer microenvironmental cells are immune cells which exert profound effects on cancer cells.Understanding of all these processes is a prerequisite for the development of a more effective strategy to contain cancers. | Yiyuan Yuan Huimin Li Wang Pu Leilei Chen Dong Guo Hongfei Jiang Bo He Siyuan Qin Kui Wang Na Li Jingwei Feng Jing Wen Shipeng Cheng Yaguang Zhang Weiwei Yang Dan Ye Zhimin Lu Canhua Huang Jun Mei Hua-Feng Zhang Ping Gao Peng Jiang Shicheng Su Bing Sun Shi-Min Zhao | 2022 | Science China(Life Sciences)2022，65，2： | 5 |
| 7 | Key technologies implementation of high-repetition-rate satellite laser ranging显示文摘Satellite laser ranging (SLR) is one of the major space geodetic instruments, which has various applications in earth science. In this paper, we introduce several issues regarding the key technology implementation of high-repetition-rate SLR system. Compared with traditional technology, using kHz and 8ps pulse width laser component, the data quantity and quality of high-repetition-rate satellite laser ranging (SLR) can be significantly improved. The characteristics of high-repetition-rate laser ranging and the key technologies are presented, including the event timer with the precision of picosecond, the generation of range gate signal, and so on. All of them are based on the Field Programmable Gate Arrays (FPGA) and tested on China mobile SLR system-TROS1000. Finally, the observations of satellite Beacon-C are given. | Wang Peiyuan Guo Tangyong Gao Hao Li Xin Zhu Wei Zou Tong Li Shipeng | 2013 | Geodesy and Geodynamics2013，4，1： | 4 |
| 8 | Present advances and perspectives of broadband photo-detectors based on emerging 2D-Xenes beyond graphene显示文摘As an excellent optical device,photodetectors have many important applications,such as communication technology,display technology,scientific measurement,fire monitoring,aerospace and biomedical research,and ifs of great significance in the research of nanotechnology and optoelectronics.Graphene,as the first two-dimensional(2D)single-element nanomaterial,has the advantages of high carrier mobility,high strength,high light transmittance and excellent thermal conductivity,and ifs widely used in various nano-optical devices.The great success of graphene has led scientists to extensive research on other 2D single-element nanomaterials.Recently,a group of novel 2D single-element nanomaterials have attracted a lot of attention from scientists because of its excellent physical,chemical,electronic,mechanical and optical properties.Furthermore,it has opened a new door for the realization of new and efficient photodetectors.The group of 2D single-element nanomaterials are called 2D-Xenes and used to make high-performance photodetectors.Currently,there are few studies on photodetectors based on 2D-Xenes,but some 2D-Xenes have been applied to photodetectors and reported.Some of these have excellent photodetection performance,such as high photoresponsivity(R),broad spectral response range,fast photoresponse speed and high specific detectivity(D).Based on the novel 2D-Xenes,this review explores the types and preparation methods of 2D-Xenes,and the working mechanisms of 2D-Xenes photodetectors.Finally,the challenges and development trends of 2D-Xenes in the future are discussed.The research of 2D-Xenes is of great significance for the development of high-performance photodetectors in the future,and is expected to be widely used in other nanoelectronics and optical devices. | Bing Wang Shipeng Zhong Yanqi Ge Huide Wang Xiaoling Luo Han Zhang | 2020 | Nano Research2020，13，4： | 4 |
| 9 | Influence of thermal inhibitor position and temperature on vortex-shedding-driven pressure oscillations显示文摘Vortex-acoustic coupling is one of the most important potential sources of combustion instability in solid rocket motors (SRMs). Based on the Von Karman Institute for Fluid Dynamics (VKI) experimental motor, the influence of the thermal inhibitor position and temperature on vortex-shedding-driven pressure oscillations is numerically studied via the large eddy simulation (LES) method. The simulation results demonstrate that vortex shedding is a periodic process and its accurate frequency can be numerically obtained. Acoustic modes could be easily excited by vortex shedding. The vortex shedding frequency and second acoustic frequency dominate the pressure oscillation characteristics in the chamber. Thermal inhibitor position and gas temperature have little effect on vortex shedding frequency, but have great impact on pressure oscillation amplitude. Pressure amplitude is much higher when the thermal inhibitor locates at the acoustic velocity anti-nodes. The farther the thermal inhibitor is to the nozzle head, the more vortex energy would be dissipated by the turbulence. Therefore, the vortex shedding amplitude at the second acoustic velocity antinode near 3/4L (L is chamber length) is larger than those of others. Besides, the natural acoustic frequencies increase with the gas temperature. As the vortex shedding frequency departs from the natural acoustic frequency, the vortex-acoustic feedback loop is decoupled. Consequently, both the vortex shedding and acoustic amplitudes decrease rapidly. | Su Wanxing Li Shipeng Zhang Qiao Li Junwei Ye Qingqing Wang Ningfei | 2013 | Chinese Journal of Aeronautics2013，26，3： | 4 |
| 10 | A Novel Orthogonal LoRa Multiple Access Algorithm for Satellite Internet of Things显示文摘In recent years,LoRa has been extensively researched in the satellite Internet of Things(IoT).However,the multiple access technology of LoRa is still one of the bottlenecks of satellite IoT.To improve the multiple access performance of LoRa satellite IoT,based on the orthogonality of LoRa symbols in the fractional domain,this paper proposes a low complexity Orthogonal LoRa Multiple Access(OLMA)algorithm for multiple LoRa users occupying the same frequency bandwidth.The algorithm introduces the address code to divide the fractional bandwidth into multiple parts,and the OLMA users with different address codes occupy different parts to transmit the information code,thus avoiding mutual interference caused by collisions in the same frequency bandwidth.The multiple access capability of OLMA can be flexibly configured only by simply adjusting the length of the address code according to the actual application requirements of data transmission.Theoretical analysis and simulation results show that the OLMA algorithm can greatly improve the multiple access capability and the total transmission bit rate of LoRa IoT without changing the existing LoRa modulation parameters and process. | Chengwen Zhang Liankai Wang Libin Jiao Shipeng Wang Jun Shi Jia Yue | 2022 | China Communications2022，19，3： | 4 |
| 11 | Homo-PROTAC mediated suicide of MDM2 to treat non-small cell lung cancer显示文摘The dose-related adverse effects of MDM2-P5 3 inhibitors have caused significant concern in the development of clinical safe anticancer agents.Herein we report an unprecedented homo-PROTAC strategy for more effective disruption of MDM2-P53 interaction.The design concept is inspired by the capacity of sub-stoichiometric catalytic PROTACs enabling to degrade an unwanted protein and the dual functions of MDM2 as an E3 ubiquitin ligase and a binding protein with tumor suppressor P53.The new homo-PROTACs are designed to induce self-degradation of MDM2.The results of the investigation have shown that PROTAC 11 a efficiently dimerizes MDM2 with highly competitive binding activity and induces proteasome-dependent self-degradation of MDM2 in A549 non-small cell lung cancer cells.Furthermore,markedly,enantiomer 11 a-1 exhibits potent in vivo antitumor activity in A549 xenograft nude mouse model,which is the first example of homo-PROTAC with in vivo therapeutic potency.This study demonstrates the potential of the homo-PROTAC as an alternative chemical tool for tumorigenic MDM2 knockdown,which could be developed into a safe therapy for cancer treatment. | Shipeng He Junhui Ma Yuxin Fang Ying Liu Shanchao Wu Guoqiang Dong Wei Wang Chunquan Sheng | 2021 | Acta Pharmaceutica Sinica B2021，11，6： | 4 |
| 12 | Research Progress on Photocatalytic Reduction of the Nitrate Radical显示文摘Due to a large number of application of the nitrogen fertilizer,unreasonable treatments of the animal wastes,domestic sewage and industrial sewage including nitrogen,and garbage stacking in recent years,the concentration of NO 3 that was toxic to humans in worldwide ground water presented rise trend at different degrees.Photocatalytic removal technology of the nitrogen had many advantages and was widely valued.Cost was low,and there was no secondary pollution.Reaction condition was mild,and reaction time was short.The photocatalytic reduction research of nitrate at home and abroad was reviewed in detail,including photocatalyst,scavenger and reaction mechanism.In particular,perspectives for photocatalytic reduction of the nitrate were detailedly analyzed. | Yingchun Miao Guang Chen Gang Wang Yaling Gao Shipeng Wu | 2013 | Meteorological and Environmental Research2013，4，1： | 3 |
| 13 | The Genetic Mechanism of Inertinite in the Middle Jurassic Inertinite- Rich Coal Seams of the Southern Ordos Basin显示文摘also an important geological information carrier of coal forming environments.In the southern section of the Ordos Basin,the No.4 inertinite-rich coal seam of the Middle Jurassic Yan’an Formation in the Binchang Coal field was selected as an example to study the genetic mechanism of the inertinite.In this study,the results obtained from experimental tests of coal rock,including principal and trace elements,stable carbon isotopes,scanning electron microscopy,inertinite reflectance,sporopollen and free radical retorting methods,were analyzed.Then,the findings were combined with the previous understanding of the oxygen content in the atmosphere and ground fire characteristics,in order to discuss the genesis mechanism of inertinite in the No.4 coal seam.The obtained research results were as follows:(1)During the coal forming period of the No.4 coal seam,the overall climate had been relatively dry.There were four relatively dry-wet climate cycles in the No.4 coal seam,which were controlled by the eccentricity astronomical period.The inertinite content were relatively high during the dry periods;(2)The temperature range suitable for microorganism activities during the oxidation processes was between 0 and 80℃.The simulation results of the free radical concentrations showed that the maximum temperature of fusain in the No.4 coal seam during the process of coalification had not exceeded 300℃,which was significantly higher than the temperature range of microorganism activities.Therefore,these were not conducive to the activities of microorganism and formation of inertinite during the coal-forming period;(3)The genesis temperature of the inertinite in the No.4 coal seam was calculated according to the reflectance of the inertinite,which was lower than 400℃.This result supported the cause of wildfire of the inertinite and reflected that the type of wildfire was mainly ground fire,along with partially surface fire.Moreover,the paleogeographic location,climatic conditions,atmospheric oxygen concentration,etc.of the study area showed that the conditions for wildfire events were in fact available;(4)There were dense and scattered fusinite observed in the No.4 coal seam,and the thickness of cell walls were found to differ.It was speculated that this was related to the type of wildfire,combustion temperatures,combustion timeframes,and different initial conditions of the burned objects during the coal forming periods. | Dongdong Wang Qiang Mao Guoqi Dong Shipeng Yang Dawei Lv Lusheng Yin | 2019 | Journal of Geological Research2019，1，3： | 3 |
| 14 | Quick identification of guidance law for an incoming missile using multiple-model mechanism显示文摘A guidance law parameter identification model based on Gated Recurrent Unit(GRU)neural network is established. The scenario of the model is that an incoming missile(called missile)attacks a target aircraft(called aircraft) using Proportional Navigation(PN) guidance law. The parameter identification is viewed as a regression problem in this paper rather than a classification problem, which means the assumption that the parameter is in a finite set of possible results is discarded. To increase the training speed of the neural network and obtain the nonlinear mapping relationship between kinematic information and the guidance law parameter of the incoming missile, an output processing method called Multiple-Model Mechanism(MMM) is proposed. Compared with a conventional GRU neural network, the model established in this paper can deal with data of any length through an encoding layer in front of the input layer. The effectiveness of the proposed Multiple-Model Mechanism and the performance of the guidance law parameter identification model are demonstrated using numerical simulation. | Yinhan WANG Shipeng FAN Jiang WANG Guang WU | 2022 | Chinese Journal of Aeronautics2022，35，9： | 3 |
| 15 | Asymmetric directional couplers based on silicon nanophotonic waveguides and applications显示文摘方向性的 couplers (DC ) 为认识到力量交换作为一个基本元素一直在起一个重要作用。以前,大多数工作集中于对称的 DC,很少工作都没为不对称的方向性的 couplers (模数转换器) 被报导。在最近年,硅 nanophotonic 波导与超离频索引对比和极端小的生气的节被开发了很好,这被显示出基于 silicon-oninsulator ( SOI ), nanophotonic 波导有的模数转换器为象模式选择的联合一样的极化选择的联合的某唯一的能力,它是分别地为极化相关的系统和 modedivision-mulitplexing 系统很重要。在这份报纸,评论为力量切开,切开的极化横梁,以及模式 conversion/(de ) 在基于硅的模数转换器和应用程序上为最近的进步被给 multiplexing。 | Daoxin DAI Shipeng WANG | 2016 | Frontiers of Optoelectronics2016，9，3： | 3 |
| 16 | Effect of concentration of cadmium sulfate solution on structural,optical and electric properties of Cd_(1-x)Zn_(x)S thin films显示文摘Cd_(1-x)Zn_(x)S thin films were deposited by chemical bath deposition(CBD)on the glass substrate to study the influence of cadmium sulfate concentration on the structural characteristics of the thin film.The SEM results show that the thin film surfaces under the cadmium sulfate concentration of 0.005 M exhibit better compactness and uniformity.The distribution diagrams of thin film elements illustrate the film growth rate changes on the trend of the increase,decrease,and increase with the increase of cadmium sulfate concentration.XRD studies exhibit the crystal structure of the film is the hexagonal phase,and there are obvious diffraction peaks and better crystallinity when the concentration is 0.005 M.Spectrophotometer test results demonstrate that the relationship between zinc content x and optical band gap value E_(g) can be expressed by the equation E_(g)(x)=0.59x^(2)+0.69x+2.43.Increasing the zinc content can increase the optical band gap,and the absorbance of the thin film can be improved by decreasing the cadmium sulfate concentration,however,all of them have good transmittance.At a concentration of 0.005 M,the thin film has good absorbance in the 300-800 nm range,80%transmittance,and band gap value of 3.24 eV,which is suitable for use as a buffer layer for solar cells. | Yuming Xue Shipeng Zhang Dianyou Song Liming Zhang Xinyu Wang Lang Wang Hang Sun | 2021 | Journal of Semiconductors2021，42，11： | 3 |
| 17 | Ginsenoside Rh2 suppresses colon cancer growth by targeting the miR-150-3p/SRCIN1/Wnt axis显示文摘Ginsenoside Rh2,which is extracted from ginseng,exerts antitumor activity.Recent studies suggest that Rh2 may suppress the growth of colon cancer(CC)in vitro.However,the underlying mechanism remains unclear.In this study,we identified the relative levels of miR-150-3p in CC tissues and cells by a comprehensive strategy of data mining,computational biology,and real-time reverse transcription PCR(qRT-PCR)experiments.The regulatory effects of miR-150-3p/SRCIN1 on the proliferative and invasive abilities of CC cells are evaluated by CCK-8,EdU,wound healing,and transwell assays.Cell cycle-and apoptosis-related protein levels are assessed by western blot analysis.An in vivo tumor formation assay was conducted to explore the effects of miR-150-3p on tumor growth.Furthermore,bioinformatics and dual luciferase reporter assays are applied to determine the functional binding of miRNA to mRNA of the target gene.Finally,the relationship between Rh2 and miR-150-3p was further verified in SW620 and HCT-116 cells.miR-150-3p is downregulated in CC tissues and cell lines.Functional assays indicate that the upregulation of miR-150-3p inhibits tumor growth both in vivo and in vitro.In addition,SRCIN1 is upregulated in CC and predicts a poor prognosis,and it is the direct target for miR-150-3p.Moreover,the miR-150-3p mimic decreases Topflash/Fopflash-dependent luciferase activity,resulting in the inhibition of Wnt pathway activity.Rh2 can suppress the growth of CC by increasing miR-150-3p expression.Rh2 alleviates the accelerating effect on Wnt pathway activity,cell proliferation/migration,and colony formation caused by miR-150-3p inhibition.Rh2 inhibits the miR-150-3p/SRCIN1/Wnt axis to suppress colon cancer growth. | Shipeng Li Wenfeng Han Qichen He Yang Wang Gang Jin Youcheng Zhang | 2023 | Acta Biochimica et Biophysica Sinica2023，55，4： | 2 |
| 18 | Single optical microfiber enabled tactile sensor for simultaneous temperature and pressure measurement显示文摘The ability to sense heat and touch is essential for healthcare,robotics,and human–machine interfaces.By taking advantage of the engineerable waveguiding properties,we design and fabricate a flexible optical microfiber sensor for simultaneous temperature and pressure measurement based on theoretical calculation.The sensor exhibits a high temperature sensitivity of 1.2 nm/℃ by measuring the shift of a high-order mode cutoff wavelength in the short-wavelength range.In the case of pressure sensing,the sensor shows a sensitivity of 4.5%per kilopascal with a fast temporal frequency response of 1000 Hz owing to the strong evanescent wave guided outside the microfiber.The cross talk is negligible because the temperature and pressure signals are measured at different wavelengths based on different mechanisms.The properties of fast temporal response,high temperature,and pressure sensitivity enable the sensor for real-time skin temperature and wrist pulse measurements,which is critical to the accurate analysis of pulse waveforms.We believe the sensor will have great potential in wearable optical devices ranging from healthcare to humanoid robots. | NI YAO XIAOYU WANG SHUQI MA XINGDA SONG SHAN WANG ZHANGXING SHI JING PAN SHIPENG WANG JIANLIANG XIAO HAITAO LIU LONGTENG YU YAO TANG ZHANG ZHANG XIONG LI WEI FANG LEI ZHANG LIMIN TONG | 2022 | Photonics Research2022，10，9： | 2 |
| 19 | Lactate anions participate in T cell cytokine production and function显示文摘After antigen stimulation, T cells preferentially increase aerobic glycolysis to meet the bioenergetic and biosynthetic demands of T cell activation, proliferation, and effector functions. Lactate, a by-product of glycolysis, has been reported to function as an important energy source and signaling molecule. Here, we found that lactate anions are involved in cytokine production in Tcells after TCR activation. During ex vivo T cell activation, the addition of excess sodium lactate(Na L) increased the production of cytokines(such as IFNγ/IL-2/TNFα) more than the addition of sodium chloride(NaCl). This enhanced cytokine production was dependent on TCR/CD3 activation but not CD28 activation. In vivo, Na L treatment inhibited tumour growth in subcutaneously transplanted tumour models in a T cell-dependent manner, which was consistent with increased T cell cytokine production in the Na L treatment group compared to the Na Cl treatment group. Furthermore, a mechanistic experiment showed that this enhanced cytokine production was regulated by GAPDH-mediated post-transcriptional regulation. Taken together, our findings indicate a new regulatory mechanism involved in glycolysis that promotes T cell function. | Jing Wen Shipeng Cheng Yaguang Zhang Ran Wang Jiefang Xu Zhiyang Ling Liyan Ma Xinghao Ai Bing Sun | 2021 | Science China(Life Sciences)2021，64，11： | 2 |
| 20 | Enhanced interfacial polarization of defective porous carbon confined CoP nanoparticles forming Mott-Schottky heterojunction for efficient electromagnetic wave absorption显示文摘Integrating heterogeneous interface through nanostructure design and interfacial modification is essential to realize strengthened interfacial polarization relaxation in electromagnetic wave absorption.However,an in-depth comprehension of the interfacial polarization behavior at hetero-junction/interface is highly desired but remains a great challenge.Herein,a Mott-Schottky heterojunction consisting of honeycomb-like porous N-doped carbon confined CoP nanoparticles(CoP@HNC)is designed to elevate the interfacial polarization strength.Simultaneously,corresponding electron migration and redistribution between the heterointerface of defective carbon and CoP nanoparticles are revealed.The significant difference in the work function on both sides of heterogeneous interface boosts the interfacial polarization in high frequency region.Furthermore,the relevant spectroscopic characterizations demonstrate that electron spontaneously migrates from CoP to N-doped carbon at the heterointerface,thereby contributing to the accumulation of electron on defective carbon side and the distribution of hole on CoP side.Impressively,benefitting from the synergistic effects of three-dimensional porous conductive carbon skeleton,foreign N heteroatoms,special CoP nanoparticles,and the resultant CoP/N-doped carbon Mott-Schottky heterojunction,the CoP@HNC exhibits remarkable electromagnetic wave absorption performances with minimum reflection loss up to−60.8 dB and the maximum effective absorption bandwidth of 4.96 GHz,which is superior to most of recently reported transition metal phosphides microwave absorbing composites.The present work opens a new avenue for designing heterogeneous interface to realize strengthened microwave absorption capability and also reveals the in-depth influence of interface structure on electromagnetic wave absorption. | Baojun Wang Fangzhi Huang Hao Wu Zijie Xu Shipeng Wang Qinghua Han Fenghua Liu Shikuo Li Hui Zhang | 2023 | Nano Research2023，16，3： | 2 |
您所在的机构暂未开通此部分的功能，请联系管理员