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| 1 | Microstructure and properties of Ga-modified 0.7BiFeO_3-0.3BaTiO_3 solid solution显示文摘Binary solid solutions 0.7Bi (GaxFe1-x)O3-0.3BaTiO3 (x = 0, 0.025, 0.05, 0.1) ceramics were prepared by traditional ceramic process. All the ceramic samples showed single perovskite phase except the sam- ple with x = 0.1. The effects of gallium doping on microstructure, ferromagnetic, ferroelectric, dielectric properties and conductivity were investigated. The results indicated that Ga-dopant could improve the sintering ability of the solid solution when the Ga content x was below 0.05. When x was over 0.05, the sintering ability of the solid solution was weakened, and the phase structure of 0.7BiFeO3-0.3BaTiO3 solid solution changed from rhombohedral phase into tetragonal ferroelectric phase. The electrical resistivity increased with the Ga content increasing. Both ferroelectricity and ferromagnetism were observed in all the ceramic samples. With the Ga content increasing, the remanent magnetization Mr increased and the magnetic coercive field Hc decreased. However, the remanent polarization Pr fluctu- ated, increasing firstly and decreasing later. | LIU XiaoHui XU Zhuo QU ShaoBo WEI XiaoYong CHEN JiangLi | 2007 | Chinese Science Bulletin2007，52，20： | 4 |
| 2 | Grain oriented growth and properties of ultra-high temperature CaBi_2Nb_2O_9 piezoelectric ceramics显示文摘CaBi2Nb2O9 (CBNO) ceramics was prepared at 1050℃ using regular flake-like CBNO powders as the precursor, and synthe-sized by the molten salts synthesis method. The tropism degree and microstructure of the ceramics were analyzed, and the die-lectric, ferroelectric and piezoelectric properties were characterized. Compared with conventional methods, the properties of CBNO ceramics by the new preparation method were found to be better. As the sinter temperature decreases, the grain growth becomes regular with textured features. The polarization process becomes easy to be realized at room temperature. Moreover, the dielectric loss decreases and the piezoelectric constant increases significantly. | TIAN XiaoXia QU ShaoBo WANG BinKe ZHANG WuSen ZHAO JianFeng | 2011 | Science China Chemistry2011，54，10： | 2 |
| 3 | Completely spin-decoupled geometric phase of a metasurface显示文摘Metasurfaces have provided an unprecedented degree of freedom(DOF)in the manipulation of electromagnetic waves.A geometric phase can be readily obtained by rotating the meta-atoms of a metasurface.Nevertheless,such geometric phases are usually spin-coupled,with the same magnitude but opposite signs for left-and right-handed circularly polarized(LCP and RCP)waves.To achieve independent control of LCP and RCP waves,it is crucial to obtain spin-decoupled geometric phases.In this paper,we propose to obtain completely spin-decoupled geometric phases by engineering the surface current paths on meta-atoms.Based on the rotational Doppler effect,the rotation manner is first analyzed,and it is found that the generation of a geometric phase lies in the rotation of the surface current paths on meta-atoms.Since the induced surface current paths under the LCP and RCP waves always start oppositely and are mirror-symmetrical with each other,it is natural that the geometric phases have the same magnitude and opposite signs when the meta-atoms are rotated.To obtain spin-decoupled geometric phases,the induced surface current under one spin should be rotated by one angle while the current under the other spin is rotated by a different angles.In this way,LCP and RCP waves can acquire different geometric phase changes.Proof-of-principle prototypes were designed,fabricated,and measured.Both the simulation and experiment results verify spin-decoupled geometric phases.This work provides a robust means to obtain a spindependent geometric phase and can be readily extended to higher frequency bands such as the terahertz,IR,and optical regimes. | XINMIN FU JIE YANG JIAFU WANG YAJUAN HAN CHANG DING TIANSHUO QIU BINGYUE QU LEI LI YONGFENG LI SHAOBO QU | 2023 | Photonics Research2023，11，7： | 1 |
| 4 | Electro- magnetic properties of ferroelectric-ferrite ceramic composites显示文摘 | CHEN Jiangli XU Zhuo QU Shaobo | 2008 | Ceramics International2008，34，4： | 1 |
| 5 | Preparation and magnetic properties of CoFe_2O_4/TiO_2 composite films显示文摘Using (Ti(OC_4H_9)_4) and metal chlorates as starting materials, CoFe_2O_4/TiO_2 composite films were pre-pared by sol-gel method. The effects of heat treatment temperature and pH of the precursor on micro-structure and magnetic properties were studied. The phase structure of the samples was examined by X-ray diffraction. The microstructure was examined by scanning electron microscope, atomic force microscope and polarized microscope. The magnetic property was measured by vibrating sample magnetometer. The results show that the crystals of different phases grow up independently. CoFe_2O_4 is uniformly embedded into the TiO_2 matrix in the prepared composite films, and the growth of com-posite films is dependent on the heat treatment temperatures and PH of the precursor. The average size of CoFe_2O_4 crystal is 19 nm in Nanocomposite film prepared when the heat treatment temperature is 800℃ and the pH of the precursor is between 2 and 3. The magnetism of the composite films is en-hanced as the heat treatment temperature increases. | TIAN XiaoXia QU ShaoBo PEI ZhiBin WANG BinKe | 2008 | Chinese Science Bulletin2008，53，12： | 1 |
| 6 | Preparation of CoFe204 / TiO2 nano-composites thinfilms by sol-gel method and studr of magnetic properties 显示文摘 | Tian Xiaoxia Pei Zhibin Qu Shaobo | 2008 | Journal of Airforce Engineering University:Natural Science Edition2008，9，3： | 1 |
| 7 | Filter-An- tenna Consisting of Conical FSS Radome and Mono- pole Antenna显示文摘 | Zhou Hang Qu Shaobo Lin Shaobo | 2012 | IEEE Transactions on Antennas and Propag2012，60，6： | 1 |
| 8 | The Open Cloak显示文摘 | Ma Hua Qu Shaobo Xu Zhuo | 2009 | Applied Physics Letter2009，94，10： | 1 |
| 9 | Reaction mechanisms of PZN-BT powder prepared by molten salt synthesis显示文摘 | Yang Zupei Zhang Banglao Qu Shaobo | 2001 | Journal of Materials Science Letters2001，20，： | 1 |
| 10 | The effect of composition on microstructure and properties of PNW-PMS-PZT ceramics for high-power piezoelectric transformer显示文摘 | Hong-liang Du Shaobo Qu Jun Che | 2005 | Materials Science and Engineering A2005，393，： | 1 |
| 11 | Improvement in the piezoelectric temperature stability of(K_(0.5)Na_(0.5))NbO_3 ceramics显示文摘Through an analysis of the temperature stability of(K0.5Na0.5)NbO3(KNN)based ceramics and KNN solid solutions,we propose a method to enhance the temperature stability of KNN materials.These materials are valuable for their piezoelectric properties.To verify the feasibility of this method,0.9(K1-xNax)NbO3-0.06LiNbO3-0.04CaTiO3(KNLN-CaTiO3)ceramics were designed,and their structure and properties were studied.The results show that KNLN-CaTiO3(x=0.54)ceramics have a good temperature stability over a wide temperature range(25-320°C).Also,they have good piezoelectric properties(d33=152 pC/N in x=0.54).This result confirms the feasibility of our proposed solution for improving the piezoelectric properties of KNN-based ceramics that have poor temperature stability. | ZHAO JingBo DU HongLiang QU ShaoBo ZHANG HongMei XU Zhuo | 2011 | Chinese Science Bulletin2011，56，22： | 1 |
| 12 | Preparation and Temperature Dependence of Electrostriction Properties for PMN-based Composite Ceramics显示文摘 | Zhao Jingbo Qu Shaobo Du Hongliang | 2009 | Materials Science and Engineering B2009，162，： | 1 |
| 13 | Spin-selective corner reflector for retro-reflection and absorption by a circular dichroitic manner显示文摘Recently, we have witnessed an extraordinary spurt in attention toward manipulating electromagnetic waves by metasurfaces. Particularly, tailoring of circular polarization has attracted great amounts of interest in both microwave and optics regimes. Circular dichroism, an exotic chiroptical effect of natural molecules, has aroused discussion about this issue, yet it is still in its infancy. Herein, we initiate circular dichroism followed by controlling spin-selective wavefronts via chiral metasurfaces. An N-shaped chiral resonator loaded with two lumped resistors is proposed as the meta-atom producing an adequate phase gradient. Assisted by the ohmic dissipation of the introduced resistors, the effect of differential absorption provides an auxiliary degree of freedom for developing circularly polarized waves with a designated spin state. A planar corner reflector that can achieve retro-reflection and absorption for right-and left-handed circularly polarized incidence is theoretically simulated and experimentally observed at microwave frequency. Thus, our effort provides an alternative approach to tailoring electromagnetic waves in a circular dichroitic manner and may also find applications in multi-functional systems in optics and microwave regimes. | HE WANG YAO JING YONGFENG LI LINGLING HUANG MAOCHANG FENG QI YUAN JIAFU WANG JIEQIU ZHANG SHAOBO QU | 2021 | Photonics Research2021，9，5： | 1 |
| 14 | Machine-learning-empowered multispectral metafilm with reduced radar cross section,low infrared emissivity,and visible transparency显示文摘For camouflage applications,the performance requirements for metamaterials in different electromagnetic spectra are usually contradictory,which makes it difficult to develop satisfactory design schemes with multispectral compatibility.Fortunately,empowered by machine learning,metamaterial design is no longer limited to directly solving Maxwell’s equations.The design schemes and experiences of metamaterials can be analyzed,summarized,and learned by computers,which will significantly improve the design efficiency for the sake of practical engineer-ing applications.Here,we resort to the machine learning to solve the multispectral compatibility problem of metamaterials and demonstrate the design of a new metafilm with multiple mechanisms that can realize small microwave scattering,low infrared emissivity,and visible transparency simultaneously using a multilayer back-propagation neural network.The rapid evolution of structural design is realized by establishing a mapping between spectral curves and structural parameters.By training the network with different materials,the designed network is more adaptable.Through simulations and experimental verifications,the designed architecture has good accuracy and robustness.This paper provides a facile method for fast designs of multispectral metafilms that can find wide applications in satellite solar panels,aircraft windows,and others. | RUICHAO ZHU JIAFU WANG JINMING JIANG CUILIAN XU CHE LIU YUXIANG JIA SAI SUI ZHONGTAO ZHANG TONGHAO LIU ZUNTIAN CHU JUN WANG TIE JUN CUI SHAOBO QU | 2022 | Photonics Research2022，10，5： | 1 |
| 15 | Genomic basis of evolutionary adaptation in a warm-blooded fish显示文摘Few fishes have evolved elevated body temperatures compared with ambient temperatures,and only in opah(Lampris spp)is the entire body affected.To understand the molecular basis of endothermy,we analyzed the opah genome and identified 23 genes with convergent amino acid substitutions across fish,birds,and mammals,including slc8b1,which encodes the mitochondrial Na+/Ca2+exchanger and is essential for heart function andmetabolic heat production.Among endothermic fishes,44 convergent genes with suggestive metabolic functions were identified,such as glrx3,encoding a crucial protein for hemoglobin maturation.Numerous genes involved in the production and retention of metabolic heat were also found to be under positive selection.Analyses of opah’s unique inner-heat-producing pectoral muscle layer(PMI),an evolutionary key innovation,revealed that many proteins were co-opted from dorsal swimming muscles for thermogenesis and oxidative phosphorylation.Thus,the opah genome provides valuable resources and opportunities to uncover the genetic basis of thermal adaptations in fish. | Xin Wang Meng Qu Yali Liu Ralf F.Schneider Yue Song Zelin Chen Hao Zhang Yanhong Zhang Haiyan Yu Suyu Zhang Dongxu Li Geng Qin Shaobo Ma Jia Zhong Jianping Yin Shuaishuai Liu Guangyi Fan Axel Meyer Dazhi Wang Qiang Lin | 2022 | The Innovation2022，3，1： | 1 |
| 16 | Material Parameter Equation for Elliptical Cylindrical Cloaks显示文摘 | Ma Hua Qu Shaobo Xu Zhuo | 2008 | Phys Rev A2008，77，01： | 1 |
| 17 | Remotely mind-controlled metasurface via brainwaves显示文摘The power of controlling objects with mind has captivated a popular fascination to human beings.One possible path is to employ brain signal collecting technologies together with emerging programmable metasurfaces(PM),whose functions or operating modes can be switched or customized via on-site programming or pre-defined software.Nevertheless,most of existing PMs are wire-connected to users,manually-controlled and not real-time.Here,we propose the concept of remotely mind-controlled metasurface(RMCM)via brainwaves.Rather than DC voltage from power supply or AC voltages from signal generators,the metasurface is controlled by brainwaves collected in real time and transmitted wirelessly from the user.As an example,we demonstrated a RMCM whose scattering pattern can be altered dynamically according to the user’s brain waves via Bluetooth.The attention intensity information is extracted as the control signal and a mapping between attention intensity and scattering pattern of the metasurface is established.With such a framework,we experimentally demonstrated and verified a prototype of such metasurface system which can be remotely controlled by the user to modify its scattering pattern.This work paves a new way to intelligent metasurfaces and may find applications in health monitoring,5G/6G communications,smart sensors,etc. | Ruichao Zhu Jiafu Wang Tianshuo Qiu Yajuan Han Xinmin Fu Yuzhi Shi Xingsi Liu Tonghao Liu Zhongtao Zhang Zuntian Chu Cheng‑Wei Qiu Shaobo Qu | 2022 | eLight2022，2，1： | 1 |
| 18 | Interface and ionic interdiffusion in cofired ferroelectric / ferrite multilayer composites显示文摘 | Gao Feng Qu Shaobo Yang Zupei | 2002 | J Mater Sci Lett2002，21，1： | 1 |
| 19 | Direct field-to-pattern monolithic design of holographic metasurface via residual encoderdecoder convolutional neural network显示文摘Complex-amplitude holographic metasurfaces(CAHMs)with the flexibility in modulating phase and amplitude profiles have been used to manipulate the propagation of wavefront with an unprecedented level,leading to higher image-reconstruction quality compared with their natural counterparts.However,prevailing design methods of CAHMs are based on Huygens-Fresnel theory,meta-atom optimization,numerical simulation and experimental verification,which results in a consumption of computing resources.Here,we applied residual encoder-decoder convolutional neural network to directly map the electric field distributions and input images for monolithic metasurface design.A pretrained network is firstly trained by the electric field distributions calculated by diffraction theory,which is subsequently migrated as transfer learning framework to map the simulated electric field distributions and input images.The training results show that the normalized mean pixel error is about 3%on dataset.As verification,the metasurface prototypes are fabricated,simulated and measured.The reconstructed electric field of reverse-engineered metasurface exhibits high similarity to the target electric field,which demonstrates the effectiveness of our design.Encouragingly,this work provides a monolithic field-to-pattern design method for CAHMs,which paves a new route for the direct reconstruction of metasurfaces. | Ruichao Zhu Jiafu Wang Tianshuo Qiu Dingkang Yang Bo Feng Zuntian Chu Tonghao Liu Yajuan Han Hongya Chen Shaobo Qu | 2023 | Opto-Electronic Advances2023，6，8： | 0 |
| 20 | Shape memory alloy-based 3D morphologically reconfigurable chiral metamaterial for tailoring circular dichroism by voltage control显示文摘Three-dimensional chiral materials with intrinsic chirality play a crucial role in achieving a strong chiral response and flexible light manipulation.Reconfigurable chirality through the 3D morphological transformation of chiral materials is significant for greater freedom in tailoring light but remains a challenge.Inspired by the unique 3D morphological memory capability of shape memory alloys(SMAs),we demonstrate and discuss a chiral resonator in the microwave regime that can realize reconfigurable chirality through 3D morphological transformation.The introduction of heating film realizes voltage control of SMA’s morphology for utilizing the temperature sensitivity of SMA better,enabling arbitrary control of circular dichroism(CD)flip and CD intensity.The qualitative and quantitative analysis of the surface current distribution of chiral enantiomers reveals that the chirality of metaatoms originates from the surge of electric dipole pxand electric quadrupole Q.It is worth mentioning that the proposed strategy to achieve reconfigurable chirality using 3D morphological transformations can be directly extended to other higher frequencies,such as visible,infrared,and terahertz bands.Significantly,our paradigm to study the relationship between complex 3D morphology and chirality holds potential for application in biosensing,spin detection,and spin-selective devices. | LIXIN JIANG QI YUAN HAO YANG YONGFENG LI LIN ZHENG ZHIBIAO ZHU SHUANG LIANG YONGQIANG PANG HE WANG JIAFU WANG SHAOBO QU | 2023 | Photonics Research2023，11，3： | 0 |
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