|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Anisotropic coding metamaterials and their powerful manipulation of differently polarized terahertz waves显示文摘Metamaterials based on effective media can be used to produce a number of unusual physical properties(for example,negative refraction and invisibility cloaking)because they can be tailored with effective medium parameters that do not occur in nature.Recently,the use of coding metamaterials has been suggested for the control of electromagnetic waves through the design of coding sequences using digital elements‘0’and‘1,'which possess opposite phase responses.Here we propose the concept of an anisotropic coding metamaterial in which the coding behaviors in different directions are dependent on the polarization status of the electromagnetic waves.We experimentally demonstrate an ultrathin and flexible polarization-controlled anisotropic coding metasurface that functions in the terahertz regime using specially designed coding elements.By encoding the elements with elaborately designed coding sequences(both 1-bit and 2-bit sequences),the x-and y-polarized waves can be anomalously reflected or independently diffused in three dimensions.The simulated far-field scattering patterns and near-field distributions are presented to illustrate the dual-functional performance of the encoded metasurface,and the results are consistent with the measured results.We further demonstrate the ability of the anisotropic coding metasurfaces to generate a beam splitter and realize simultaneous anomalous reflections and polarization conversions,thus providing powerful control of differently polarized electromagnetic waves.The proposed method enables versatile beam behaviors under orthogonal polarizations using a single metasurface and has the potential for use in the development of interesting terahertz devices. | Shuo Liu Tie Jun Cui Quan Xu Di Bao Liangliang Du Xiang Wan Wen Xuan Tang Chunmei Ouyang Xiao Yang Zhou Hao Yuan Hui Feng Ma Wei Xiang Jiang Jiaguang Han Weili Zhang Qiang Cheng | 2016 | Light(Science & Applications)2016，5，1： | 36 |
| 2 | Geological characteristics and mineralization setting of the Zhuxi tungsten(copper) polymetallic deposit in the Eastern Jiangnan Orogen显示文摘The Zhuxi ore deposit is a super-large scheelite(copper) polymetallic deposit discovered in recent years. It grew above copper/tungsten-rich Neoproterozoic argilloarenaceous basement rocks and was formed in the contact zone between Yanshanian granites and Carboniferous-Permian limestone. Granites related to this mineralization mainly include equigranular, middle- to coarse-grained granites and granitic porphyries. There are two mineralization types: skarn scheelite(copper) and granite scheelite mineralization. The former is large scale and has a high content of scheelite, whereas the latter is small scale and has a low content of scheelite. In the Taqian-Fuchun Basin, its NW boundary is a thrust fault, and the SE boundary is an angular unconformity with Proterozoic basement. In Carboniferous-Permian rock assemblages, the tungsten and copper contents in the limestone are both very high. The contents of major elements in granitoids do not differ largely between the periphery and the inside of the Zhuxi ore deposit. In both areas, the values of the aluminum saturation index are A/CNK>1.1, and the rocks are classified as potassium-rich strongly peraluminous granites. In terms of trace elements, compared to granites on the periphery of the Zhuxi ore deposit, the granites inside the Zhuxi ore deposit have smaller d Eu values, exhibit a significantly more negative Eu anomaly, are richer in Rb, U, Ta, Pb and Hf, and are more depleted in Ba, Ce, Sr, La and Ti, which indicates that they are highly differentiated S-type granites with a high degree of evolution. Under the influence of fluids, mineralization of sulfides is evident within massive rock formations inside the Zhuxi ore deposit, and the mean SO_3 content is 0.2%. Compared to peripheral rocks, the d Eu and total rare earth element(REE) content of granites inside the Zhuxi ore deposit are both lower, indicating a certain evolutionary inheritance relationship between the granites on the periphery and the granites inside the Zhuxi ore deposit. For peripheral and ore district plutons, U-Pb zircon dating shows an age range of 152–148 Ma. In situ Lu-Hf isotope analysis of zircon in the granites reveals that the calculated e_(Hf)(t) values are all negative, and the majority range from -6 to -9. The T_(DM2) values are concentrated in the range of 1.50–1.88 Ga(peak at 1.75 Ga), suggesting that the granitic magmas are derived from partial melting of ancient crust. This paper also discusses the metallogenic conditions and ore-controlling conditions of the ore district from the perspectives of mineral contents, hydrothermal alteration, and ore-controlling structures in the strata and the ore-bearing rocks. It is proposed that the Zhuxi ore deposit went through a multistage evolution, including oblique intrusion of granitic magmas, skarn mineralization, cooling and alteration, and precipitation of metal sulfides. The mineralization pattern can be summarized as 'copper in the east and tungsten in the west, copper at shallow-middle depths and tungsten at deep depths, tungsten in the early stage and copper in the late stage'. | CHEN GuoHua SHU LiangShu SHU LiMin ZHANG Cheng OUYANG YongPeng | 2016 | Science China Earth Sciences2016，59，4： | 25 |
| 3 | Numerical modeling and dynamic analysis of the 2017 Xinmo landslide in Maoxian County, China显示文摘A catastrophic landslide occurred at Xinmo village in Maoxian County, Sichuan Province,China, on June 24, 2017. A 2.87×106 m3 rock mass collapsed and entrained the surface soil layer along the landslide path. Eighty-three people were killed or went missing and more than 103 houses were destroyed. In this paper, the geological conditions of the landslide are analyzed via field investigation and high-resolution imagery. The dynamic process and runout characteristics of the landslide are numerically analyzed using a depth-integrated continuum method and Mac Cormack-TVD finite difference algorithm.Computational results show that the evaluated area of the danger zone matchs well with the results of field investigation. It is worth noting that soil sprayed by the high-speed blast needs to be taken into account for such kind of large high-locality landslide. The maximum velocity is about 55 m/s, which is consistent with most cases. In addition, the potential danger zone of an unstable block is evaluated. The potential risk area evaluated by the efficient depthintegrated continuum method could play a significant role in disaster prevention and secondary hazard avoidance during rescue operations. | OUYANG Chao-jun ZHAO Wei HE Si-ming WANG Dong-po ZHOU Shu AN Hui-cong WANG Zhong-wen CHENG Duo-xiang | 2017 | Journal of Mountain Science2017，14，9： | 19 |
| 4 | A CLASS OF SINGULARLY PERTURBED GENERALIZED BOUNDARY VALUE PROBLEMS FOR QUASI-LINEAR ELLIPTIC EQUATION OF HIGHER ORDER显示文摘The singularly perturbed generalized boundary value problems for the quasi_linear elliptic equation of higher order are considered. Under suitable conditions,the existence, uniqueness and asymptotic behavior of the generalized solution for the Dirichlet problems are studied. | MO Jia-qi(莫嘉琪) OUYANG Cheng(欧阳成) | 2001 | Applied Mathematics and Mechanics(English Edition)2001，22，3： | 19 |
| 5 | Ultrafast fiber lasers mode-locked by two-dimensional materials:review and prospect显示文摘The year 2019 marks the 10th anniversary of the first report of ultrafast fiber laser mode-locked by graphene.This result has had an important impact on ultrafast laser optics and continues to offer new horizons.Herein,we mainly review the linear and nonlinear photonic properties of two-dimensional(2D)materials,as well as their nonlinear applications in efficient passive mode-locking devices and ultrafast fiber lasers.Initial works and significant progress in this field,as well as new insights and challenges of 2D materials for ultrafast fiber lasers,are reviewed and analyzed. | TIAN JIANG KE YIN CONG WANG JIE YOU HAO OUYANG RUNLIN MIAO CHENXI ZHANG KE WEI HAN LI HAITAO CHEN RENYAN ZHANG XIN ZHENG ZHONGJIE XU XIANGAI CHENG HAN ZHANG | 2020 | Photonics Research2020，8，1： | 11 |
| 6 | Imaging superoxide flash and metabolism-coupled mitochondrial permeability transition in living animals显示文摘线粒体为精力新陈代谢和反应的氧种类(ROS ) 的生产是必要的。在未经触动的房间,呼吸线粒体展览自发的 “ superoxide flashes”,对短暂 mitochondrial 渗透转变(tMPT ) 结果的 quantal 生产 ROS 事件。这里,我们在表示 superoxide 生物传感器 mt-cpYFP 的生活老鼠在 mitochondrial superoxide 闪光和 tMPT 活动的 vivo 成像执行第一,并且表明他们联合到整个身体的葡萄糖新陈代谢。柔韧的 tMPT/superoxide 闪光活动发生在骨胳的肌肉和 anesthetized 的臀部的神经转基因的老鼠。在骨胳的肌肉,成像 tMPT/superoxide 闪光揭示了线粒体的迷宫的三维的网络同时地操作。tMPT/superoxide 闪光活动响应全身的葡萄糖挑战或胰岛素刺激澎湃,以一种显然调制频率的方式并且也在 tMPT 的 gating 模式包含移动。因此,在 tMPT 依赖的 mitochondrial ROS 的 vivo 成像,信号和 metabolism-tMPT-superoxide 的发现闪光联合标记为 mitochondrial 功能并且 ROS 处于健康和疾病发信号的学习的重要工艺、概念的进展。 | Huaqiang Fang Min Chen Yi Ding Wei Shang Jiejia Xu Xing Zhang Wanrui Zhang Kaitao Li Yao Xiao Feng Gao Shujiang Shang Jing-Chao Li Xiao-Li Tian Shi-Qiang Wang Jingsong Zhou Noah Weisleder Jianjie Ma Kunfu Ouyang Ju Chen Xianhua Wang Ming Zheng Wang Wang Xiuqin Zhang Heping Cheng | 2011 | Cell Research2011，21，9： | 11 |
| 7 | Evaluation of Circulating Endometrial Cells as a Biomarker for Endometriosis显示文摘 | Ying Chen Hong-Lan Zhu Zhe-Wen Tang Kuang Hong Neoh Dong-Fang Ouyang Heng Cui Hong-Yan Cheng Rui-Qiong Ma Xue Ye Ray P. S. Han Xiao-Hong Chang | 2017 | Chinese Medical Journal2017，，19： | 10 |
| 8 | Vehicle survival patterns in China显示文摘The vehicle survival pattern describes the process that the survival ratio of vehicles decreases with the growth of vehicle age. Vehicle average life span and vehicle scrappage intensity are the key features of vehicle survival patterns and are important for the projection of China's vehicle scrappage and ownership. In this study, we modeled the vehicle survival patterns of nine classifications of vehicles in China by employing the Weibull distribution, and obtained the vehicle survival ratio functions. It is estimated that the average life spans of private passenger vehicles, government and business vehicles, non-operating buses, heavy duty, medium duty and light duty trucks are 14.5, 13.1, 11.5, 12.8, 10.1, and 8 years, respectively. The scrappage intensities of these vehicles are similar. Average life spans of taxis, transit buses and non-transit operating buses are 5, 9, and 5.5 years with the pattern of mandatory scrappage. Vehicle scrappages in China are mainly regulated by the upper limits of vehicle distances traveled specified by the compulsory scrappage standards. | HAO Han WANG HeWu OUYANG MingGao CHENG Fei | 2011 | Science China(Technological Sciences)2011，54，3： | 9 |
| 9 | Variation of Coenzyme F_(420) Activity and Methane Yield in Landfill Simulation of Organic Waste显示文摘A simulated landfill anaerobic bioreactor was used to characterize the anaerobic biodegradation and biogas generation of organic waste which was mainly composed of residuals of vegetables and foods. We investigated the dy-namics of the coenzyme F420 activity and determined correlations between biogas yields,methane yields,methane con-centration and coenzyme F420 activity. The experiment was carried out under different conditions from control without any treatment,addition of Fe3+,microorganism inoculation to a combination of Fe3+ addition and inoculation at a tem-perature of 36±2 ℃ . The experiment was lasted 120 d and coenzyme F420 activity was analyzed using ultraviolet spec-trophotometry. Experimental results indicated that activity of the coenzyme F420 treated by Fe3+ and microorganism in-oculation increased substantially. The waste treated by inoculation had the greatest increase. When the waste was treated by Fe3+,inoculation and the combination of Fe3+ and inoculation,biogas yields increased by 46.9%,132.6% and 153.1%,respectively; while the methane yields increased 4,97 and 98 times. Methane concentration varied between 0 and 6% in the control reactor,from 0 to 14% for waste treated by the addition of Fe3+,from 0 to 59% for waste treated by inoculation and from 0 to 63% for waste treated by Fe3+ addition and inoculation. Correlations between coenzyme F420 activity and biogas production,methane production and methane concentration proved to be positively significant (p<0.05),except for the control. Consequently,coenzyme F420 activity could be used as an index for monitoring the ac-tivity of methanogens during anaerobic biodegradation of the organic fraction of municipal solid waste. | CHENG Yun-huan SANG Shu-xun HUANG Hua-zhou LIU Xiao-juan OUYANG Jin-bao | 2007 | Journal of China University of Mining and Technology2007，17，3： | 9 |
| 10 | New innovations in pavement materials and engineering:A review on pavement engineering research 2021显示文摘Sustainable and resilient pavement infrastructure is critical for current economic and environmental challenges.In the past 10 years,the pavement infrastructure strongly supports the rapid development of the global social economy.New theories,new methods,new technologies and new materials related to pavement engineering are emerging.Deterioration of pavement infrastructure is a typical multi-physics problem.Because of actual coupled behaviors of traffic and environmental conditions,predictions of pavement service life become more and more complicated and require a deep knowledge of pavement material analysis.In order to summarize the current and determine the future research of pavement engineering,Journal of Traffic and Transportation Engineering(English Edition)has launched a review paper on the topic of'New innovations in pavement materials and engineering:A review on pavement engineering research 2021'.Based on the joint-effort of 43 scholars from 24 well-known universities in highway engineering,this review paper systematically analyzes the research status and future development direction of 5 major fields of pavement engineering in the world.The content includes asphalt binder performance and modeling,mixture performance and modeling of pavement materials,multi-scale mechanics,green and sustainable pavement,and intelligent pavement.Overall,this review paper is able to provide references and insights for researchers and engineers in the field of pavement engineering. | JTTE Editorial Office Jiaqi Chen Hancheng Dan Yongjie Ding Yangming Gao Meng Guo Shuaicheng Guo Bingye Han Bin Hong Yue Hou Chichun Hu Jing Hu Ju Huyan Jiwang Jiang Wei Jiang Cheng Li Pengfei Liu Yu Liu Zhuangzhuang Liu Guoyang Lu Jian Ouyang Xin Qu Dongya Ren Chao Wang Chaohui Wang Dawei Wang Di Wang Hainian Wang Haopeng Wang Yue Xiao Chao Xing Huining Xu Yu Yan Xu Yang Lingyun You Zhanping You Bin Yu Huayang Yu Huanan Yu Henglong Zhang Jizhe Zhang Changhong Zhou Changjun Zhou Xingyi Zhu | 2021 | Journal of Traffic and Transportation Engineering(English Edition)2021，8，6： | 7 |
| 11 | Structural analysis of asparaginyl endopeptidase reveals the activation mechanism and a reversible intermediate maturation stage显示文摘Asparaginyl endopeptidase (AEP ) 是有为在 P1 地点的天门冬素残余的偏爱的 endo/lysosomal 半胱氨酸 endopeptidase 并且在像使用费的受体 3/7/9 的成熟起一个重要作用。AEP 被知道为催化激活在酸的 pH 经历 autoproteolytic 成熟。这里,我们描述 AEP 酶原的水晶结构和 AEP 的成熟形式。在 AEP 和 caspases 之间的结构的比较在关键残余的作文并且在催化机制揭示了类似。Mutagenesis 研究作为为肽底层的劈开是必要的残余识别了 N44, R46, H150, E189, C191, S217/S218 和 D233。在成熟期间, AEP 的帽子领域的 autoproteolytic 劈开在核心领域上开创存取到活跃地点。出人意料地,一个中间的 autoproteolytic 成熟阶段被发现在近似 pH 4.5 在哪个部分激活的 AEP 能被颠倒回到它的酶原形式。这个唯一的特征被 AEP pH4.5 (AEP 在 pH 被成熟 4.5 并且在 pH 结晶 8.5 ) ,在哪个破肽契约被重新绑扎,结构被转变回到它的酶原形式。另外, AEP 禁止者 cystatin C 能被充分激活的 AEP 消化,但是不能被激活的组织蛋白酶消化。因此,我们第一次证明 cystatins 可以为活跃地点通过底层竞争调整 AEP 的活动。 | Lixia Zhao Tian Hua Christopher Crowley Heng Ru Xiangmin Ni Neil Shaw Lianying Jiao Wei Ding Lu Qu Li-Wei Hung Wei Huang Lei Liu Keqiang Ye Songying Ouyang Genhong Cheng Zhi-Jie Liu | 2014 | Cell Research2014，24，3： | 6 |
| 12 | Dendrite-accelerated thermal runaway mechanisms of lithium metal pouch batteries显示文摘High-energy-density lithium metal batteries(LMBs)are widely accepted as promising next-generation energy storage systems.However,the safety features of practical LMBs are rarely explored quantitatively.Herein,the thermal runaway behaviors of a 3.26 Ah(343 Wh kg^(−1))Li|LiNi_(0.5)Co_(0.2)Mn_(0.3)O_(2)pouch cell in the whole life cycle are quantitatively investigated by extended volume-accelerating rate calorimetry and differential scanning calorimetry.By thermal failure analyses on pristine cell with fresh Li metal,activated cell with once plated dendrites,and 20-cycled cell with large quantities of dendrites and dead Li,dendrite-accelerated thermal runaway mechanisms including reaction sequence and heat release contribution are reached.Suppressing dendrite growth and reducing the reactivity between Li metal anode and electrolyte at high temperature are effective strategies to enhance the safety performance of LMBs.These findings can largely enhance the understanding on the thermal runaway behaviors of Li metal pouch cells in practical working conditions. | Xiang-Qun Xu Xin-Bing Cheng Feng-Ni Jiang Shi-Jie Yang Dongsheng Ren Peng Shi HungJen Hsu Hong Yuan Jia-Qi Huang Minggao Ouyang Qiang Zhang | 2022 | SusMat2022，2，4： | 6 |
| 13 | Novel SNP markers on ginsenosides biosynthesis functional gene for authentication of ginseng herbs and commercial products显示文摘Panax ginseng and Panax quinquefolius have similar bioactive components and morphological characteristics, but they are known to have different medicinal values, high-sensitive and accurate method is expected to identify the sources of ginseng products and evaluate the quality, but with a huge challenge. Our established UHPLC-TOF/MS method coupled with orthogonal partial least squares discriminant analysis(OPLS-DA) model based on 18 ginsenosides was applied to discriminate the sources of raw medicinal materials in ginseng products, and nested PCR strategy was used to discover 6 novel single nucleotide polymorphism(SNP)sites in functional dammarenediol synthase(DS) gene for genetic authentication of P. ginseng and P. quinquefolius for the first time.OPLS-DA model could identify the sources of raw ginseng materials are real or not. SNP markers were applied to identify ginseng fresh samples as well as commercial products, and proved to be successful. This established molecular method can tell exact source information of adulterants, and it was highly sensitive and specific even when total DNA amount was only 0.1 ng and the adulteration was as low as 1%. Therefore, this study made an attempt at the exploration of new type SNP marker for variety authentication and function regulation at the same time, and the combination of chemical and molecular discrimination methods provided the comprehensive evaluation and authentication for the sources of ginseng herbs and products. | WU Wen-Ru CHENG Chun-Song CHENG Qi-Qing LAO Chi-Chou CUI Hao TANG Zi-Yu OUYANG Yue LIU Liang ZHOU Hua | 2020 | Chinese Journal of Natural Medicines2020，18，10： | 6 |
| 14 | Animal diversities and characteristics of environmental change revealed by skeletons unearthed at Zhongba Site of Chongqing City,China显示文摘Nearly 200000 animal skeletons are unearthed in the Unit T0202 from Zhongba Site of Zhongxian County.According to the analysis of 129165 specimens,these skeletons may be classified into 5 kinds, namely,Mammalia,Osteichthys,Aves,Amphibian and Reptilia,which belong to 13 orders,28 families and 42 genera.In this paper,based on archeological dating and AMS 14 C data,through statistically analyzing the unearthed skeletons and studying the change of the smallest individual numbers,these research results detected the following:1)In almost all the time of 2370―200 BC,in Zhongba region, some animals distributed widely,such as Muntiacus sp,Elaphodus cephalophus and Muntiacus sp. inhabiting in glade and grassland,Scrofa sp.and Canis familiaris raised by the ancient people,rodentia rabbit and Rattus rattus,which suggested that a fairly good ecological environment of forest and grassland was preserved at that period and the predecessors began to raise domestic animals from 1750 to 1000 BC,which has lasted until today.2)Rhinoceros only lived during 2000―1750 BC,1000― 700 BC and 700―500 BC,which indicates that the ecological environment of grassland and wetland might be better in these phases.3)Macaca sp.and Ursus arctos appeared only after 1750―1000 BC, which may show that the forest condition is better for animals to live during 1750―200 BC.4)The smallest individual numbers of Bublus sp.,bos sp.and otters emerged during about 2370―1750 BC, which perhaps infers that water area during the early period was wider than that of the late period.5) Since skeletons of rhinoceros are discovered in strata of Zhongba Site during 2000―1750 BC and 1000―500 BC,according to the climate and ecology environment which rhinoceros live in now,the average annual temperature and precipitation during 2000―1750 BC and 1000―500 BC are supposed to be probably higher than that of today.Although Zhu Kezhen considered that the first low temperature period in the past 5000 years of China was between 1100 BC and 850 BC,massive pollen of Morus, Ulmus,Fagus,Quercus,Castanea,etc.were found in Dajiuhu peat at that time,which should indicate that the climate was still moderate for living things to live at least in Dajiuhu basin and Zhongba Site.6) Because skeletons of Gervus albirostris were unearthed during 310―200 BC at Zhongba Site,based onthe climate and the ecological environment those animals live in now,the average annual temperature and the average annual precipitation in Zhongba area between 310 BC and 200 BC should be lower than those of today,which is confirmed by the TOC research of Zhongba Site strata. | ZHU Cheng MA ChunMei OUYANG Jie LI ZhongXuan YIN Qian SUN ZhiBin HUANG YunPing R.K.FLAD LI Lan LI YuMei | 2008 | Chinese Science Bulletin2008，53，S1： | 4 |
| 15 | Discovery of differential sequences for improving breeding and yield of cultivated Ophiocordyceps sinensis through ITS sequencing and phylogenetic analysis显示文摘To accelerate the breeding process of cultivated Ophiocordyceps sinensis and increase its yield,it is important to identify molecular fingerprint of dominant O.sinensis.In the present study,we collected 3 batches of industrially cultivated O.sinensis product with higher yield than the others and compared their internal transcribed spacer(ITS)sequences with the wild and the reported.The ITS sequence was obtained by bidirectional sequencing and analyzed with molecular systematics as a DNA barcode for rapid and accurate identification of wild and cultivated O.sinensis collected.The ITS sequences of O.sinensis with detailed collection loci on NCBI were downloaded to construct a phylogenetic tree together with the sequences obtained from the present study by using neighbor-joining method based on their evolution relationship.The information on collection loci was analyzed with ArcGIS 10.2 to demonstrate the geographic distribution of these samples and thus to determine the origin of the dominant samples.The results showed that all wild and cultivated samples were identified as O.sinensis and all sequences were divided into seven phylogenetic groups in the tree.Those groups were precisely distributed on the map and the process of their system evolution was clearly presented.The three cultivated samples were clustered into two dominant groups,showing the correlation between the industrially cultivated samples and the dominant wild samples,which can provide references for its optimized breeding in the future. | CHENG Qi-Qing CHENG Chun-Song OUYANG Yue LAO Chi-Chou CUI Hao XIAN Yu JIANG Zhi-Hong LI Wen-Jia ZHOU Hua | 2018 | Chinese Journal of Natural Medicines2018，16，10： | 4 |
| 16 | Flexible lead-free BFO-based dielectric capacitor with large energy density,superior thermal stability,and reliable bending endurance显示文摘As an essential energy-stored device,the inorganic dielectric film capacitor plays an irreplaceable role in high-energy pulse power technology area.In this work,propelled by the challenge of overcoming the bottlenecks of inflexibility and inferior energy storage density of the pure BiFeO3 films,the mica with high bendability and thermal stability is adopted as substrate,and the relaxor ferroelectric(Sr_(0.7)Bi_(0.2))TiO_(3) is introduced to form solid solution to introduce relaxor behavior.The subsequently fabricated 0.3Bi(Fe_(0.95)Mn_(0.05))O_(3)-0.7(Sr_(0.7)Bi_(0.2))TiO_(3)(BFMO-SBT)thin film capacitor exhibits a high recoverable energy storage density(W_(rec)=61 J cm^(-3))and a high efficiency(η=75%)combined with a fast discharging rate(23.5 μs)due to the large polarization difference(ΔP=59.4 μC cm^(-2)),high breakdown strength(E_(b)=3000 kV cm^(-1)),and the strong relaxor dispersion(γ=1.78).Of particular importance is the capacitor presents excellent stability of energy storage performance,including a wide working temperature window of -50-200℃,fatigue endurance of 108 cycles,and frequency range of 500 Hz-20 kHz.Furthermore,there are no obviously deteriorations on energy storage capability under various bending states and after 104 times of mechanical bending cycles.All these results indicate that BFMO-SBT on mica film capacitor has potential application in the future flexible electronics. | Changhong Yang Jin Qian Panpan Lv Haitao Wu Xiujuan Lin Kun Wang Jun Ouyang Shifeng Huang Xin Cheng Zhenxiang Cheng | 2020 | Journal of Materiomics2020，6，1： | 4 |
| 17 | Saturated absorption of different layered Bi_2Se_3 films in the resonance zone显示文摘Here, we used the micro P-scan method to investigate the saturated absorption(SA) of different layered Bi_2Se_3 continuous films. Through resonance excitation, first, we studied the influence of the second surface state(SS) on SA. The second SS resonance excitation(~2.07 e V) resulted in a free carrier cross section that was 4 orders of magnitude larger than usual. At the same time, we found that the fast relaxation process of the massless Dirac electrons is much shorter than that of electrons in bulk states. Moreover, the second SS excitation resonance reduced the saturation intensity. Second, we studied the effect of the thickness on the SA properties of materials.The results showed that the saturation intensity was positively correlated to the thickness, the same as the modulation depth, and the thicker the Bi_2Se_3 film was, the less the second SS would influence it. This work demonstrated that by using Bi_2Se_3 as a saturable absorber through changing the thickness or excitation wavelength, a controllable SA could be achieved. | JUN ZHANG TIAN JIANG TONG ZHOU HAO OUYANG CHENXI ZHANG ZHENG XIN ZHENYU WANG XIANG’AI CHENG | 2018 | Photonics Research2018，6，10： | 3 |
| 18 | The spatiotemporal patterns of sea ice in the Bohai Sea during the winter seasons of 2000–2016显示文摘In this study,sea ice thickness(SIT)and sea ice extent(SIE)in the Bohai Sea from 2000 to 2016 were investigated.A surface heat balance equation was applied to calculate SIT using ice surface temperatures estimated from the Moderate Resolution Imaging Spectroradiometer(MODIS)data with input from air temperature and wind speed from reanalyzing weather data.No trend was found in SIT during 2000–2016.The mean SIT and SIE during this period were 5.58±0.86 cm and 23×10^(3)±8×10^(3)km^(2),respectively.The largest SIT and SIE periods were observed during the second half of January and the first half of February,respectively.The Spearman correlation coefficient between mean ice thickness and average air temperature from 21 automatic weather stations around the Bohai Sea was–0.94(P<.005),and the coefficient between median ice extent and negative accumulated temperature was–0.503(P<.001).The rate of increase in air temperature around the Bohai Sea is 0.271℃per decade in winter for 1979–2016(P<.05),which is much lower than that in northern polar area(0.648℃per decade).This rate has not resulted in a decreasing trend in SIT and SIE for the past 16 years in the Bohai Sea. | Lunxi Ouyang Fengming Hui Lixian Zhu Xiao Cheng Bin Cheng Mohammed Shokr Jiechen Zhao Minghu Ding Tao Zeng | 2019 | International Journal of Digital Earth2019，12，8： | 3 |
| 19 | Ultrasensitive polarization-dependent terahertz modulation in hybrid perovskites plasmoninduced transparency devices显示文摘Active control of metamaterial properties with high tunability of both resonant intensity and frequency is essential for advanced terahertz(THz) applications, ranging from spectroscopy and sensing to communications.Among varied metamaterials, plasmon-induced transparency(PIT) has enabled active control with giant sensitivity by embedding semiconducting materials. However, there is still a stringent challenge to achieve dynamic responses in both intensity and frequency modulation. Here, an anisotropic THz active metamaterial device with an ultrasensitive modulation feature is proposed and experimentally studied. A radiative-radiative-coupled PIT system is established, with a frequency shift of 0.26 THz in its sharp transparent windows by polarization rotation. Enabled by high charge-carrier mobility and longer diffusion lengths, we utilize a straightforwardly spincoated MAPbI3 film acting as a photoactive medium to endow the device with high sensitivity and ultrafast speed.When the device is pumped by an ultralow laser fluence, the PIT transmission windows at 0.86 and 1.12 THz demonstrate a significant reduction for two polarizations, respectively, with a full recovery time of 561 ps. In addition, we numerically prove the validity that the investigated resonator structure is sensitive to the optically induced conductivity. The hybrid system not only achieves resonant intensity and frequency modulations simultaneously, but also preserves the all-optical-induced switching merits with high sensitivity and speed, which enriches multifunctional subwavelength metamaterial devices at THz frequencies. | JUNHU ZHOU YUZE HU TIAN JIANG HAO OUYANG HAN LI YIZHEN SUI HAO HAO JIE YOU XIN ZHENG ZHONGJIE XU XIANG’AI CHENG | 2019 | Photonics Research2019，7，9： | 3 |
| 20 | Black phosphorus-based van der Waals heterostructures for mid-infrared light-emission applications显示文摘Mid-infrared(MIR)light-emitting devices play a key role in optical communications,thermal imaging,and material analysis applications.Two-dimensional(2D)materials offer a promising direction for next-generation MIR devices owing to their exotic optical properties,as well as the ultimate thickness limit.More importantly,van der Waals heterostructures-combining the best of various 2D materials at an artificial atomic level-provide many new possibilities for constructing MIR light-emitting devices of large tuneability and high integration.Here,we introduce a simple but novel van der Waals heterostructure for MIR light-emission applications built from thin-film BP and transition metal dichalcogenides(TMDCs),in which BP acts as an MIR light-emission layer.For BP–WSe_(2) heterostructures,an enhancement of~200% in the photoluminescence intensities in the MIR region is observed,demonstrating highly efficient energy transfer in this heterostructure with type-Ⅰ band alignment.For BP-MoS_(2) heterostructures,a room temperature MIR light-emitting diode(LED)is enabled through the formation of a vertical PN heterojunction at the interface.Our work reveals that the BP-TMDC heterostructure with efficient light emission in the MIR range,either optically or electrically activated,provides a promising platform for infrared light property studies and applications. | Xinrong Zong Huamin Hu Gang Ouyang Jingwei Wang Run Shi Le Zhang Qingsheng Zeng Chao Zhu Shouheng Chen Chun Cheng Bing Wang Han Zhang Zheng Liu Wei Huang Taihong Wang Lin Wang Xiaolong Chen | 2020 | Light(Science & Applications)2020，9，1： | 3 |
您所在的机构暂未开通此部分的功能，请联系管理员