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| 1 | Emergence and prevalence of naturally occurring lower virulent African swine fever viruses in domestic pigs in China in 2020显示文摘African swine fever virus(ASFV)has been circulating in China for more than two years,and it is not clear whether the biological properties of the virus have changed.Here,we report on our surveillance of ASFVs in seven provinces of China,from June to December,2020.A total of 22 viruses were isolated and characterized as genotype II ASFVs,with mutations,deletions,insertions,or short-fragment replacement occurring in all isolates compared with Pig/HLJ/2018(HLJ/18),the earliest isolate in China.Eleven isolates had four different types of natural mutations or deletion in the EP402R gene and displayed a nonhemadsorbing(non-HAD)phenotype.Four isolates were tested for virulence in pigs;two were found to be as highly lethal as HLJ/18.However,two non-HAD isolates showed lower virulence but were highly transmissible;infection with 106 TCID50 dose was partially lethal and caused acute or sub-acute disease,whereas 103 TCID50 dose caused non-lethal,sub-acute or chronic disease,and persistent infection.The emergence of lower virulent natural mutants brings greater difficulty to the early diagnosis of ASF and creates new challenges for ASFV control. | Encheng Sun Zhenjiang Zhang Zilong Wang Xijun He Xianfeng Zhang Lulu Wang Wenqing Wang Lianyu Huang Fei Xi Haoyue Huangfu Ghebremedhin Tsegay Hong Huo Jianhong Sun Zhijun Tian Wei Xia Xuewu Yu Fang Li Renqiang Liu Yuntao Guan Dongming Zhao Zhigao Bu | 2021 | Science China(Life Sciences)2021，64，5： | 46 |
| 2 | High-accuracy primary and transfer standards for radiometric calibration显示文摘The first research and experimental results obtained in China of high-accuracy radiometric calibration based on cryogenic radiometer are reported. Uncertainties of cryogenic radiometer and trap detectors at 7 wavelengths in the visible spectrum (488-786 nm) were less than 0.023% and 0.035% respectively, which proved the reasonability and possibility of establishing and transferring high-accuracy radiometric standards based on detectors. | Xiaobing Zheng Haoyu Wu Junping Zhang Yucheng Liu Wei Zhou Leyi Wang Yanli Qiao | 2000 | Chinese Science Bulletin2000，45，21： | 12 |
| 3 | Treatment of multiple sclerosis by transplantation of neural stem cells derived from induced pluripotent stem cells显示文摘Multiple sclerosis(MS) is an autoimmune disease of the central nervous system(CNS), with focal T lymphocytic infiltration and damage of myelin and axons. The underlying mechanism of pathogenesis remains unclear and there are currently no effective treatments. The development of neural stem cell(NSC) transplantation provides a promising strategy to treat neurodegenerative disease. However, the limited availability of NSCs prevents their application in neural disease therapy. In this study, we generated NSCs from induced pluripotent stem cells(iPSCs) and transplanted these cells into mice with experimental autoimmune encephalomyelitis(EAE), a model of MS. The results showed that transplantation of iPSC-derived NSCs dramatically reduced T cell infiltration and ameliorated white matter damage in the treated EAE mice. Correspondingly, the disease symptom score was greatly decreased, and motor ability was dramatically rescued in the iPSC-NSC-treated EAE mice, indicating the effectiveness of using iPSC-NSCs to treat MS. Our study provides pre-clinical evidence to support the feasibility of treating MS by transplantation of iPSC-derived NSCs. | Chao Zhang Jiani Cao Xiaoyan Li Haoyu Xu Weixu Wang Libin Wang Xiaoyang Zhao Wei Li Jianwei Jiao Baoyang Hu Qi Zhou Tongbiao Zhao | 2016 | Science China(Life Sciences)2016，59，9： | 9 |
| 4 | Partial Discharge Measurement and Analysis in High Voltage IGBT Modules Under DC Voltage显示文摘Insulation performance of high voltage IGBT modules is one of the key attributes in power system applications.However,the existing standards of IGBT devices and research on the evaluation of insulation performance of high voltage IGBT modules are insufficient;for example,partial discharge resistance under DC voltage blocking condition is not considered.In this paper,a new test was proposed to allow the measurement of partial discharges in all the components of IGBT modules under DC voltage.The topology of the measuring circuit is arranged in the polarity discrimination way to exclude the interference,and the voltage and discharge current waveforms during the partial discharge process are measured by the wideband time domain measurement technique.According to the proposed test,the discharge phenomenon of the IGBT modules below the rating voltage were detected.A comprehensive waveform analysis on the voltage and discharge current was performed,and the influence of the applied voltage on the waveform parameters was obtained.The waveform parameters are influenced by the applied voltage and insulation structure,which enables the discrimination of the causes of the observed partial discharge in the IGBT module under DC voltage by the waveform analysis technique.Based on the waveform analysis technique,the types and causes of the observed partial discharges were discussed and inferred,and the correctness of the inference was further verified by observation.The proposed test and waveform analysis technique provide the possibility to evaluate and distinguish partial discharges in the high voltage IGBT module under DC voltage,which may be helpful to insulation performance evaluation and insulation defect diagnosis in high voltage IGBT module. | Pengyu Fu Zhibin Zhao Xiang Cui Teng Wen Haoyu Wang Xuebao Li Peng Zhang | 2018 | CSEE Journal of Power and Energy Systems2018，4，4： | 9 |
| 5 | Image Smearing Modeling and Verification for Strapdown Star Sensor显示文摘To further extend study on celestial attitude determination with strapdown star sensor from static into dynamic field, one prerequisite is to generate precise dynamic simulating star maps. First a neat analytical solution of the smearing trajectory caused by spacecraft attitude maneuver is deduced successfully, whose parameters cover the geometric size of optics, three-axis angular velocities and CCD integral time. Then for the first time the mathematical law and method are discovered about how to synthesize the two formulae of smearing trajectory and the static Gaussian distribution function (GDF) model, the key of which is a line integral with regard to the static GDF attenuated by a factor 1/ L s (L s is the arc length of the smearing trajectory) along the smearing trajectory. The dynamic smearing model is then obtained, also in an analytical form. After that, three sets of typical simulating maps and data are simulated from this dynamic model manifesting the expected smearing effects, also compatible with the linear model as its special case of no boresight rotation. Finally, model validity tests on a rate turntable are carried out, which results in a mean correlation coefficient 0.920 0 between the camera images and the corresponding model simulated ones with the same parameters. The sufficient similarity verifies the validity of the dynamic smearing model. This model, after parameter calibration, can serve as a front-end loop of the ground semi-physical simulation system for celestial attitude determination with strapdown star sensor. | WANG Haiyong ZHOU Wenrui CHENG Xuan LIN Haoyu | 2012 | Chinese Journal of Aeronautics2012，25，1： | 8 |
| 6 | Channel Measurement and Path Loss Modeling from 220 GHz to 330 GHz for 6G Wireless Communications显示文摘Terahertz(THz)communication has been envisioned as a key enabling technology for sixthgeneration(6G).In this paper,we present an extensive THz channel measurement campaign for 6G wireless communications from 220 GHz to 330 GHz.Furthermore,the path loss is analyzed and modeled by using two single-frequency path loss models and a multiplefrequencies path loss model.It is found that at most frequency points,the measured path loss is larger than that in the free space.But at around 310 GHz,the propagation attenuation is relatively weaker compared to that in the free space.Also,the frequency dependence of path loss is observed and the frequency exponent of the multiple-frequencies path loss model is 2.1.Moreover,the cellular performance of THz communication systems is investigated by using the obtained path loss model.Simulation results indicate that the current inter-site distance(ISD)for the indoor scenario is too small for THz communications.Furthermore,the tremendous capacity gain can be obtained by using THz bands compared to using microwave bands and millimeter wave bands.Generally,this work can give an insight into the design and optimization of THz communication systems for 6G. | Pan Tang Jianhua Zhang Haoyu Tian Zhaowei Chang Jun Men Yuxiang Zhang Lei Tian Liang Xia Qixing Wang Jingsuo He | 2021 | China Communications2021，18，5： | 7 |
| 7 | An isoflavone derivative potently inhibits the angiogenesis and progression of triple-negative breast cancer by targeting the MTA2/SerRS/VEGFA pathway显示文摘Objective:Angiogenesis plays a vital role in tumor growth and metastasis.Here,we aimed to find novel efficient antiangiogenic molecules targeting vascular endothelial growth factor A(VEGFA)at the transcriptional level to treat triple-negative breast cancer(TNBC).Methods:We used a cell-based seryl tRNA synthetase(SerRS)promoter-driven dual-luciferase reporter system to screen an in-house library of 384 naturally occurring small molecules and their derivatives to find candidate molecules that could upregulate the expression of SerRS,a potent transcriptional repressor of VEGFA.The levels of SerRS and VEGFA were examined by quantitative RT-PCR(qRT-PCR),western blotting,and/or ELISAs in TNBC cells after candidate molecule administration.Zebrafish,the Matrigel plug angiogenesis assay in mice,the TNBC allograft,and xenograft mouse models were used to evaluate thein vivoanti-angiogenic and anti-cancer activities.Furthermore,the potential direct targets of the candidates were identified by proteomics and biochemical studies.Results:We found the most active compound was 3-(4-methoxyphenyl)quinolin-4(1H)-one(MEQ),an isoflavone derivative.In TNBC cells,MEQ treatment resulted in increased SerRS mRNA(P<0.001)and protein levels and downregulated VEGFA production.Both the vascular development of zebrafish and Matrigel plug angiogenesis in mice were inhibited by MEQ.MEQ also suppressed the angiogenesis in TNBC allografts and xenografts in mice,resulting in inhibited tumor growth and prolonged overall survival(P<0.05).Finally,we found that MEQ regulated SerRS transcription by interacting with MTA2(Metastasis Associated 1 Family Member 2).Conclusions:Our findings suggested that the MTA2/SerRS/VEGFA axis is a drug-treatable anti-angiogenic target,and MEQ is a promising anti-tumor molecule that merits further investigation for clinical applications. | Xiaotong Zhang Gengyi Zou Xiyang Li Lun Wang Tianyu Xie Jin Zhao Longlong Wang Shunchang Jiao Rong Xiang Haoyu Ye Yi Shi | 2020 | Cancer Biology & Medicine2020，17，3： | 6 |
| 8 | Non-fragile switched H_∞ control for morphing aircraft with asynchronous switching显示文摘This paper deals with the problem of non-fragile linear parameter-varying(LPV) H_∞ control for morphing aircraft with asynchronous switching.The switched LPV model of morphing aircraft is established by Jacobian linearization approach according to the nonlinear model.The data missing is taken into account in the link from sensors to controllers and the link from controllers to actuators,which satisfies Bernoulli distribution.The non-fragile switched LPV controllers are constructed with consideration of the uncertainties of controllers and asynchronous switching phenomenon.The parameter-dependent Lyapunov functional method and mode-dependent average dwell time(MDADT) method are combined to guarantee the stability and prescribed performance of the system.The sufficient conditions on the solvability of the problem are derived in the form of linear matrix inequalities(LMI).In order to achieve higher efficiency of the designing process,an algorithm is applied to divide the whole set into subsets automatically.Simulation results are provided to verify the effectiveness and superiority of the method in the paper. | Haoyu CHENG Chaoyang DONG Weilai JIANG Qing WANG Yanze HOU | 2017 | Chinese Journal of Aeronautics2017，30，3： | 6 |
| 9 | A Comparative Analysis of the Chloroplast Genomes of Four Salvia Medicinal Plants显示文摘Herbgenomics is an emerging field of traditional Chinese medicine(TCM)research and development.By combining TCM research with genomics,herbgenomics can help to establish the scientific validity of TCM and bring it into wider usage within the field of medicine.Salvia Linn.(S.Linn.)is a large genus of Labiatae that includes important medicinal plants.In this herbgenomics study,the complete chloroplast(cp)genomes of two Salvia spp.—namely,S.przewalskii and S.bulleyana,which are used as a surrogate for S.miltiorrhiza—were sequenced and compared with those of two other reported Salvia spp.—namely,S.miltiorrhiza and S.japonica.The genome organization,gene number,type,and repeat sequences were compared.The annotation results showed that both Salvia plants contain 114 unique genes,including 80 protein-coding,30 transfer RNA(tRNA),and four ribosomal RNA(rRNA)genes.Repeat sequence analysis revealed 21 forward and 22 palindromic sequences in both Salvia cp genomes,and 17 and 21 tandem repeats in S.przewalskii and S.bulleyana,respectively.A synteny comparison of the Salvia spp.cp genomes showed a high degree of sequence similarity in the coding regions and a relatively high divergence of the intergenic spacers.Pairwise alignment and single-nucleotide polymorphism(SNP)analyses found some candidate fragments to identify Salvia spp.,such as the intergenic region of the trnV–ndhC,trnQ–rps16,atpI–atpH,psbA–ycf3,ycf1,rpoC2,ndhF,matK,rpoB,rpoA,and accD genes.All of the results—including the repeat sequences and SNP sites,the inverted repeat(IR)region border,and the phylogenetic analysis—showed that S.przewalskii and S.bulleyana are extremely similar from a genetic standpoint.The cp genome sequences of the two Salvia spp.reported here will pave the way for breeding,species identification,phylogenetic evolution,and cp genetic engineering studies of Salvia medicinal plants. | Conglian Liang Lei Wang Juan Lei Baozhong Duan Weisi Ma Shuiming Xiao Haijun Qi Zhen Wang Yaoqi Liu Xiaofeng Shen Shuai Guo Haoyu Hu Jiang Xu Shilin Chen | 2019 | Engineering2019，5，5： | 5 |
| 10 | Argininosuccinate synthase 1 suppresses cancer cell invasion by inhibiting STAT3 pathway in hepatocellular carcinoma显示文摘Metastasis is the main reason for high recurrence and poor survival of hepatocellular carcinoma(HCC).The molecular mechanism underlying HCC metastasis remains unclear.In this study,we found that argininosuccinate synthase 1(ASS1)expression was significantly decreased and down-regulation of ASS1 was closely correlated with poor prognosis in HCC patients.DNA methylation led to the down-regulation of ASS1 in HCC.Stable silencing of ASS1 promoted migration and invasion of HCC cells,whereas overexpression of ASS1-inhibited metastasis of HCC cells in vivo and in vitro.We also revealed that ASS1-knockdown increased the phosphorylation level of S727STAT3,which contributed to HCC metastasis by up-regulation of inhibitor of differentiation 1(ID1).These findings indicate that ASS1 inhibits HCC metastasis and may serve as a target for HCC diagnosis and treatment. | Xuemei Tao Qiaozhu Zuo Haoyu Ruan Hui Wang Haojie Jin Zhuoan Cheng Yuanyuan Lv Wenxin Qin Cun Wang | 2019 | Acta Biochimica et Biophysica Sinica2019，51，3： | 4 |
| 11 | Comparison of high-sensitivity C-reactive protein level between systemic and coronary circulation in patients with acute myocardial infarction显示文摘 | Haoyu Meng Min Zhang Pengsheng Chen Ze-Mu Wang Bo Chen Zhijian Yang | 2014 | Acta Biochimica et Biophysica Sinica2014，46，2： | 3 |
| 12 | Trace Elements in Sphalerite from the Dadongla Zn-Pb Deposit, Western Hunan-Eastern Guizhou Zn-Pb Metallogenic Belt, South China显示文摘The western Hunan-eastern Guizhou Zn-Pb metallogenic belt is one of the important Zn-Pb mineralization regions in China.The Dadongla deposit,located in the northeast of Guizhou Province,is one of the typical Zn-Pb deposits in the region and has estimated resources more than 12 million metric tons(Mt)with an average grade of 4.11 wt%Zn+Pb.Its orebodies are hosted in the lower Cambrian Aoxi Formation dolomite,occurring as bedded,para-bedded in shape,and in conformity with the wall rock.The ore mineral assemblage is simple,dominated by sphalerite with minor pyrite and galena,and the gangue minerals are composed of dolomite,calcite with minor bitumen and barite.In view of the lack of geological and geochemical researches,the genesis of Zn-Pb ore is still unclear.Laser ablation-inductively coupled plasma mass spectrometry(LA-ICPMS)spot and mapping analyses were used to obtain sphalerite trace element chemistry in the Dadongla Zn-Pb deposit in Guizhou,China,aiming to constrain its ore genesis.The results show that sphalerite is characterized by the enrichment of Cd,Fe,Ge and Hg,corresponding with that of typical MVT deposits.Four zones were identified in the sphalerite crystal from Dadongla from the center to margin according to the color bands.in which the zone in the center,representing the early ore-stage sphalerite,is characterized by enrichment of Cd relatively,while the zone forming at late ore-stage is enriched in Ge and Hg relatively.The finding was controlled by differential leached metals content in ore-forming fluid from its source rock.Notably,critical element Ge trends to be enriched at the late ore-stage and follows a substitution of 2 Zn^2+(?)Ge^4++□(vacancy).Moreover,the calculated ore-forming temperature ranges from 79.9℃to 177.6℃by the empirical formula,which is similar to that of typical Mississippi Valley-type(MVT)deposits.Compared with the features of trace elements in sphalerite from different types of deposits,together with the geology,the Dadongla deposit belongs to an MVT Zn-Pb deposit. | HU Yusi YE Lin WEI Chen LI Zhenli HUANG Zhilong WANG Haoyu | 2020 | Acta Geologica Sinica(English Edition)2020，94，6： | 3 |
| 13 | Progress and prospects of horizontal well fracturing technology for shale oil and gas reservoirs显示文摘By systematically summarizing horizontal well fracturing technology abroad for shale oil and gas reservoirs since the “13th Five-Year Plan”, this article elaborates new horizontal well fracturing features in 3D development of stacked shale reservoirs, small well spacing and dense well pattern, horizontal well re-fracturing, fracturing parameters optimization and cost control. In light of requirements on horizontal well fracturing technology in China, we have summarized the technological progress in simulation of multi-fracture propagation, horizontal well frac-design, electric-drive fracturing equipment, soluble tools and low-cost downhole materials and factory-like operation. On this basis, combined with the demand analysis of horizontal well fracturing technology in the “14th Five-Year Plan” for unconventional shale oil and gas, we suggest strengthening the research and development in the following 7 aspects:(1) geology-engineering integration;(2) basic theory and design optimization of fracturing for shale oil and gas reservoirs;(3) development of high-power electric-drive fracturing equipment;(4) fracturing tool and supporting equipment for long horizontal section;(5) horizontal well flexible-sidetracking drilling technology for tapping remaining oil;(6) post-frac workover technology for long horizontal well;(7) intelligent fracturing technology. | LEI Qun XU Yun CAI Bo GUAN Baoshan WANG Xin BI Guoqiang LI Hui LI Shuai DING Bin FU Haifeng TONG Zheng LI Tao ZHANG Haoyu | 2022 | Petroleum Exploration and Development2022，49，1： | 3 |
| 14 | Characterization of the target DNA sequence for the DNA-binding domain of zinc finger protein 191显示文摘抄写因素的 DNA 有约束力的性质上的研究在寻找这些因素调整的下游的基因是重要的。在现在的学习,我们在一个 Cy s2His2 类型抄写因素的 DNA 有约束力的性质上报导,锌手指蛋白质 191 (Zfpl91 ) ,它最新被发现了在老鼠起一个重要作用。由构造包含 Zfpl91 的 DNA 有约束力的域的熔化蛋白质,我们由在锌上决定蛋白质的有约束力的特性和依赖描绘了目标 DNA。数据证明 Zfpl91 的 DNA 有约束力的域能明确地绑在 TCAT 重复主题并且在目标 DNA 的多重有约束力的地点之中有合作效果。而且,有约束力的反应依赖于锌。这个工作在基因规定和开发在 Zfpl91 的角色上为进一步的研究提供一个基础。 | Haoyue Wang Ruilin Sun Guoxiang Liu Minghui Yao Jian Fei Hebai Shen | 2008 | Acta Biochimica et Biophysica Sinica2008，40，8： | 3 |
| 15 | EGF promotes mammalian cell growth by suppressing cellular senescence显示文摘 | Peter B Alexander Lifeng Yuan Pengyuan Yang Tao Sun Rui Chen Handan Xiang Jiekai Chen Haoyu Wu Daniel R Radiloff Xiao-Fan Wang | 2015 | Cell Research2015，25，1： | 3 |
| 16 | Dissociated deficits in attentional networks in social anxiety and depression显示文摘A critical cognitive symptom that is commonly involved in social anxiety and depression is attentional deficit. However, the functional relationship between attentional deficit and these two disorders remains poorly understood. Here, we behaviorally disentangled the three key attentional components(alerting, orienting, and executive control) using the established attentional network task(ANT) to investigate how social anxiety and depression are related to deficits in these attention components. We identified a double dissociation between the symptoms of social anxiety and depression and the attentional component deficits when processing non-emotional stimuli. While individuals vulnerable to social anxiety exhibited deficits in the orienting component, individuals vulnerable to depression were impaired in the executive control component. Our findings showed that social anxiety and depression were associated with deficits in different attentional components, which are not specific to emotional information. | Haoyu Wang Ce Mo Fang Fang | 2020 | Science China(Life Sciences)2020，63，7： | 2 |
| 17 | Artificial Tactile Sense Technique for Predicting Beef Tenderness Based on FS Pressure Sensor显示文摘We present a rapid system for predicting beef tenderness by mimicking the human tactile sense. The detection system includesa FS pressure sensor, a power supply conversion circuit, a signal amplifier and a box in which the sample is mounted. Asample of raw Longissimus dorsi (LD) muscle is placed in the measuring box; then a rod connected to the pressure sensor ispressed into the beef sample to a given depth; the reaction force of the beef sample is measured and used to predict the tenderness.Sensory evaluation and Warner-Bratzler Shear Force (WBSF) evaluation of samples from the same LD muscle are usedfor comparison. The new detection system agrees with established procedure 95% of the time, and the time to test a sample isless than 5 minutes. | Xiao-dan Wang~1,Yong-hai Sun~1,Ying Wang~2,Tie-jun Hu~3,Min-hua Chen~1,Bing He~31.School of Biological and Agricultural Engineering,Jilin University,Changchun 130022,P.R.China2.School of Food Science and Engineer,Qingdao Agricultural University,Qingdao 266109,P.R.China3.Jilin Province Changchun Haoyue Halal Meat Co.,Ltd,Changchun 130013,P.R.China | 2009 | Journal of Bionic Engineering2009，6，2： | 2 |
| 18 | A Trusted Mobile Payment Environment Based on Trusted Computing and Virtualization Technology显示文摘In this paper,we propose a trusted mobile payment environment(TMPE)based on trusted computing and virtualization technology.There are a normal operating system(OS)and a trusted OS(TOS)in TMPE.We store the image of TOS in a memory card to hinder tampering.The integrity of TOS is protected by means of a trusted platform module(TPM).TOS can only be updated through a trusted third party.In addition,virtualization technology is applied to isolate TOS from normal OS.Users complete ordinary affairs in normal OS and security-sensitive affairs in TOS.TMPE can offer users a highly protected environment for mobile payment.Moreover,TMPE has good compatibility in different hardware architectures of mobile platforms.As the evaluation shows,TMPE satisfies the requirement of mobile payment well. | WANG Juan LIN Wutao LI Haoyu DU Bianxia MENG Ke WANG Jiang | 2014 | Wuhan University Journal of Natural Sciences2014，19，5： | 2 |
| 19 | Highly Reliable Multiport PUF Circuit Based on MOSFET Zero Temperature Coefficient Point显示文摘By using processing variations in the unitcircuits of the same structures and design parameters during manufacturing, Physical unclonable function(PUF)generates security keys with characteristic of uniqueness,randomness and unclonability. In this paper, a highly reliable multiport PUF scheme was proposed based on MOSFET Zero temperature coefficient(ZTC) point. It consists of input register, deviation-current generating module, arbiter array and obfuscation circuit. After reconfiguring deviation-current generating module by applying different input challenges, the PUF circuit updates keys without physical replacement. And multi-bit keys can be generated in one clock cycle. In TSMC-LP 65 nm CMOS technology, the layout of 64-port reconfigurable PUF occupies 131μm×242μm with custom designing. Experimental results show that the PUF circuit has good statistical characteristic of uniqueness and randomness. It exhibits high reliability of 98.2% with respect to temperature variation from –40℃ to 125℃ and supply voltage variation from 1.08 V to 1.32 V, indicating that it can be reliably and effectively used in information security field. | LI Gang WANG Pengjun QIAN Haoyu | 2018 | Chinese Journal of Electronics2018，27，4： | 2 |
| 20 | Multifunction switching by a flat structurally tunable acoustic metasurface for transmitted waves显示文摘In this paper a flat structurally tunable acoustic metasurface is constructed based on the helical unit cell. The length of the acoustic channel can be tuned by the screw-in depth of the helix. Accordingly, the wave phase for the transmitted acoustic wave can be tuned and the wavefront can be manipulated. Then multifunctions such as anomalous refraction, point focusing, beam focusing and self-bending can be realized and switched just by screwing in or out the helixes. At the same time, the broadband operating frequency is also realized. The experiments for anomalous refraction and point focusing are also performed, and the results show that the designed metasurface is effective. The present studies have important applications in dynamic manipulation of acoustic waves by metasurfaces. | ALi Chen QuanYu Tang HaoYu Wang ShengDong Zhao YueSheng Wang | 2020 | Science China(Physics,Mechanics & Astronomy)2020，63，4： | 2 |
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