检索结果-内蒙古大学图书馆

Minimal-invasive enhancement of auditory perception by terahertz wave modulation

Nano Research 2022年第6期15卷 5235-5244页

作者： Xiaoxuan Tan Kaijie Wu Shuang Liu Yifang Yuan Chao Chang Wei Xiong Innovation Laboratory of Terahertz Biophysics National Innovation Institute of Defense TechnologyBeijing 100071China School of Life Science Tsinghua UniversityBeijing 100071China School of Physics Peking UniversityBeijing 100071China

Hearing impairment is a common disease affecting a substantial proportion of the global ***,the most effective clinical treatment for patients with sensorineural deafness is to implant an artificial electronic ***,the improvements to hearing perception are variable and limited among healthy ***,cochlear implants have disadvantages,such as crosstalk derived from the currents that spread into non-target tissue between the ***,in this work,we describe terahertz wave modulation,a new and minimally invasive technology that can enhance hearing perception in animals by reversible modulation of currents in cochlear hair *** single-cell electrophysiology,guinea pig audiometry,and molecular dynamics simulations,we show that THM can reversibly increase mechano-electrical transducer currents(~50%higher)and voltage-gated K^(+)currents in cochlear hair cells through collective resonance of–C=O *** addition,measurement of auditory brainstem response(ABR)in guinea pigs treated with THM indicated a~10 dB increase in hearing *** study thus reports a new method of highly spatially selective hearing enhancement without introducing any exogeneous gene,which has potential applications for treatment of hearing disorders as well as several other areas of neuroscience.

关键词： terahertz wave neuromodulation hearing enhancement potassium channels cochlea

来源：评论

学校读者我要写书评

暂无评论

Numerical study on stall characteristics of a triangular airfoil in low Reynolds number compressible flow 17

Numerical study on stall characteristics of a triangular air...

引用

17th Asian Congress of Fluid Mechanics, ACFM 2023

作者： Wang, Junli Wang, Chang Liu, Chen Wu, Jian School of Energy Science and Engineering Harbin Institute of Technology Harbin150001 China Heilongjiang Key Laboratory of Micro- and Nano-scale Fluid Flow and Heat Transfer Harbin150001 China National Key Laboratory of Space Environment and Matter Behaviors Harbin Institute of Technology Harbin150001 China Frontier Research Center of Space Environment Interacting with Matter Harbin Institute of Technology Harbin150001 China

Due to the low density and low temperature of the atmosphere on the surface of Mars, Mars aircraft are usually in compressible flow at low Reynolds number. In this paper, the dynamic stall characteristics of triangular airfoil with reduced frequencies of 0.09 and 0.15 are studied based on large eddy simulation (LES). The incoming Mach number is 0.5 and the Reynolds number is 3000. The results show that, with the increase of reduced frequency, the lift and drag coefficient in dynamic motion gradually deviates from the static lift and drag coefficient, but the dynamic stall angle of attack has little difference with the static stall angle of attack. In order to obtain the main flow structure during blade dynamic stall, dynamic mode decomposition (DMD) was used to decompose and reconstruct the velocity vector field around the blade. The results show that the DMD decomposition modes mainly include time-average flow field with separation flow at the blade tail, lowfrequency large-scale separation flow at the blade leading edge and tail enrolling effect, and high-frequency separation and attachment flow at the blade apex downstream. The first 20 modes reconstruction can basically restore the main flow structure of the flow field. © The Institution of Engineering & technology 2023.

关键词： Dynamic mode decomposition

来源：评论

学校读者我要写书评

暂无评论

Fabry–Perot interference optical fiber biosensor based on the ECF for label-free DNA detection

引用

Applied Optics 2025年第9期64卷 2255-2260页

作者： Wang, Lina Li, Chong Cai, Jun Wu, Shenbing Dai, Mingxia Geng, Youfu Yi, Duo Li, Xuejin College of Electronic Engineering Huainan Normal University Huainan232038 China Shenzhen Key Laboratory of Sensor Technology Shenzhen University Shenzhen518060 China Shenzhen Key Laboratory of Advanced Thin Films and Applications College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen518060 China School of Science and Engineering Chinese University of Hong Kong Shenzhen518172 China

A fiber-optic biosensor based on self-reference parallel Fabry–Perot interference (FPI) is proposed for label-free DNA detection. The parallel FPI is formed by fusing a section of exposed core fiber (ECF) in SMF and MMF. Adopting the air cavity of the ECF as a reference, a self-reference differential phase demodulation technique is designed to improve the stability and resolution of the demodulation system. By functionalizing the fiber surface, the sensor can efficiently capture complementary DNA (cDNA). In addition, the specific selection performance of the sensor is explored using non-complementary DNA (N-cDNA). The experimental results show that the sensor exhibits a good linear response in the concentration range of 1 to 5 µM, and the sensitivity reaches 5.53◦/µM. The detection concentration can be as low as 1 µM. The proposed fiber-optic DNA biosensor has good sensitivity and selectivity and has broad prospects in the fields of biomedical diagnostics, environmental monitoring, and food safety detection. © 2025 Optica Publishing Group. All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.

关键词： Optical fibers

来源：评论

学校读者我要写书评

暂无评论

An Approximate Implementation of Multi-sensor Generalized Labeled Multi-Bernoulli Filter for Multiple Target Tracking 5

An Approximate Implementation of Multi-sensor Generalized La...

引用

5th IEEE Advanced Information technology, Electronic and Automation Control Conference, IAEAC 2021

作者： Yang, Bin Wang, Jun Jiang, Hai Beihang University School of Electronic and Information Engineering Beijing China Science and Technology on Space Physics Technology Laboratory Beijing China

Multi-sensor generalized labeled multi-Bernoulli (MS-GLMB) filter provides an analytic solution for multi-sensor multiple target tracking problems, which outputs the number of targets and the trajectories of their states by using multiple sensor observations. However, the complicated data association makes MS-GLMB filter intractable. In this paper, we propose an approximate implementation MS-GLMB filter to effectively track multiple targets in multi-sensor systems. The proposed MS-GLMB filter is compared with the sequential version of the MS-GLMB filter, and simulation results show that our method has improved tracking performance. © 2021 IEEE.

关键词： Target tracking

来源：评论

学校读者我要写书评

暂无评论

Suppressing thermal quenching via defect passivation for efficient quasi-2D perovskite light-emitting diodes

引用

Light(science & Applications) 2022年第4期11卷 644-653页

作者： Dezhong Zhang Yunxing Fu Hongmei Zhan Chenyang Zhao Xiang Gao Chuanjiang Qin Lixiang Wang State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026China

Emission thermal quenching is commonly observed in quasi-2D perovskite emitters,which causes the severe drop in luminescence eficiency for the quasi-2D perovskite light-emitting diodes(Pel EDs)during practical ***,this issue is often neglected and rarely studied,and the root cause of the thermal quenching has not been completely revealed ***,we develop a passivation strategy via the 2,7-dibromo-9,9-bis(3'-diethoxylphosphorylpropyl-fluorene to investigate and suppress the thermal *** agent can effectively passivate coordination-unsaturated Pb2+defects of both surface and bulk of the flm without affecting the perovskite crysaliation,which helps to more truly demonstrate the important role of defects in thermal *** our results reveal the root cause that the quenching will be strengthened by the defect promoted exciton-phonon ***,the PeL EDs with defect passivation achieve an improved external quantum efficiengy(EQE)over 22%and doubled operation lifetime at room temperature,and can maintain about 85%of the initial EQE at 85℃,much higher than 17%of the control *** findings provide an important basis for fabricating practical PeLEDs for lighting and displays.

关键词： thermal defect quenching

来源：评论

学校读者我要写书评

暂无评论

Deep-space exploration camera on-orbit white balance calibration based on correlated color temperature interpolation

Deep-space exploration camera on-orbit white balance calibra...

引用

2024 International Conference on Image, Signal Processing, and Pattern Recognition, ISPP 2024

作者： Liu, Sainan Long, Hongfeng Ma, Yuebo Qiao, Li Liang, Zhen Cao, Zifei Zhao, Yihui Yi, Jinhui Zhu, Zijian Tang, Yuping Zhao, Rujin National Key Laboratory of Optical Field Manipulation Science and Technology CAS Chengdu610209 China Institute of Optics and Electronics CAS Chengdu610209 China Key Laboratory of Science and Technology on Space Optoelectronic Precision Measurement CAS Chengdu610209 China University of Chinese Academy of Sciences Beijing100149 China School of Electronics Electrical and Communication Engineering UCAS Beijing100149 China

ISBN: (纸本)9781510680425

There is a significant difference in correlated color temperature between deep-space environmental light sources and that on the ground. The lack of accurate calibration parameters for cameras can lead to errors in the collected scientific image data, resulting in the failure of scientific tasks. Thus it is of vital significance to accurate white balance calibration for deep-space-exploration cameras. However, traditional white-balance methods have certain limitations. The generalization ability of the white balance correction matrix is insufficient, the ground calibration methods have poor on-orbit adaptability, and deep space exploration targets are unknown and uncertain. To this end, we proposed an on-orbit white balance calibration method for deep-space-exploration cameras based on correlated correlated color temperature interpolation. Aiming to the deep space environment background, four pre-calibrated illuminations with different correlated color temperatures are selected reasonably. Before solving the white balance calibration matrix, we stretch the image grayscale in different exposure times to ensure the brightness balance and obtain the optimal white balance matrix, which improves the generalization ability of the matrix. Finally, by interpolating the pre-calibration white balance matrixes based on the on-orbit environmental correlated color temperature, the average color difference can be reduced by 28 (72.54%) DE2000 color difference units. © 2024 SPIE.

关键词： space research

来源：评论

学校读者我要写书评

暂无评论

Temperature dependence of spin pumping in YIG/NiO(x)/W multilayer

引用

Chinese physics B 2022年第12期31卷 678-682页

作者： Lijun Ni Wenqiang Wang Lichuan Jin Jiandong Ye Hehe Gong Xiang Zhan Zhendong Chen Longlong Zhang Xingze Dai Yao Li Rong Zhang Yi Yang Huaiwu Zhang Ronghua Liu Lina Chen Yongbing Xu Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials School of Electronic Science and EngineeringNanjing UniversityNanjing 210093China State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of ChinaChengdu 610054China Jiangsu Provincial Key Laboratory for Nanotechnology School of PhysicsNanjing UniversityNanjing 210093China Jiangsu Key Laboratory of Opto-Electronic Technology Center for Quantum Transport and Thermal Energy ScienceSchool of Physics and TechnologyNanjing Normal UniversityNanjing 210023China School of Science Nanjing University of Posts and TelecommunicationsNanjing 210023China York-Nanjing Joint Centre for Spintronics and NanoEngineering Department of Electronic EngineeringUniversity of YorkYork YO105DDUnited Kingdom

We report the temperature dependence of the spin pumping effect for Y_(3)Fe_(5)O_(12)(YIG,0.9μm)/NiO(tNiO)/W(6 nm)(tNiO=0 nm,1 nm,2 nm,and 10 nm)*** samples exhibit a strong temperature-dependent inverse spin Hall effect(ISHE)signal I_(c)and sensitivity to the NiO layer *** observe a dramatic decrease of I_(c)with inserting thin NiO layer between YIG and W layers indicating that the inserting of NiO layer significantly suppresses the spin transport from YIG to *** contrast to the noticeable enhancement in YIG/NiO(tNiO≈1-2 nm)/Pt,the suppression of spin transport may be closely related to the specific interface-dependent spin scattering,spin memory loss,and spin conductance at the NiO/W ***,the I_(c)of YIG/Ni O/W exhibits a maximum near the TNof the AF NiO layer because the spins are transported dominantly by incoherent thermal magnons.

关键词： spin pumping effect spin transport charge current I_(c) linewidth△H temperature dependence

来源：评论

学校读者我要写书评

暂无评论

Self-assembled Ag_(4)V_(2)O_(7)/Ag_(3)VO_(4) Z-scheme heterojunction by pH adjustment with efficient photocatalytic performance

引用

Journal of Advanced Ceramics 2022年第11期11卷 1789-1800页

作者： Yan XING Xichuan LU Yi LI Bozhi YANG Yujia HUANG Mengfei ZHANG Jing CHENG Xin MIN Wei PAN New Energy Technology Engineering Lab of Jiangsu Province College of ScienceNanjing University of Posts and TelecommunicationsNanjing 210023China State Key Laboratory of New Ceramics&Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China College of Mathematics and Physics Beijing University of Chemical TechnologyBeijing 100029China Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes National Laboratory of Mineral MaterialsSchool of Materials Science and TechnologyChina University of Geosciences(Beijing)Beijing 100083China School of Materials Science and Hydrogen Energy Foshan UniversityFoshan 528000China

Semiconductor heterojunction plays a pivotal role in ***,the construction of a heterojunction with a fine microstructure usually requires complex synthetic ***,a pH-adjusted one-step method was employed to controllably synthesize Ag_(4)V_(2)O_(7)/Ag_(3)VO_(4) heterojunction with a well-tuned 0D/1D hierarchical structure for the first *** is noteworthy that the ordered stacking of vanadium oxide tetrahedron(VO_(3)-)guided by the pH value wisely realizes the in-situ growth of Ag_(4)V_(2)O_(7) nanoparticles on the surface of Ag_(3)VO_(4) ***,comprehensive characterization and calculation decipher the electronic structures of Ag_(4)V_(2)O_(7) and Ag_(3)VO_(4) and the formation of Z-scheme heterojunction,benefiting the visible light harvesting and carrier *** a new Ag_(4)V_(2)O_(7)/Ag_(3)VO_(4) heterojunction exhibits remarkable photocatalytic activity and excellent *** degradation of Rhodamine B(RhB)can be achieved in 10 min by the Ag_(4)V_(2)O_(7)/Ag_(3)VO_(4) heterojunction under visible light irradiation,demonstrating an outstanding reaction rate of 0.35 min^(−1) that is up to 84-fold higher than those of other silver *** importantly,this integration of synthesis technology and heterojunction design,based on the intrinsic crystal and electronic structures,could be inspiring for developing novel heterostructured materials with advanced performance.

关键词： Ag_(4)V_(2)O_(7)/Ag_(3)VO_(4) self-assembly heterojunction Z scheme photocatalysis

来源：评论

学校读者我要写书评

暂无评论

声波超材料中D类拓扑的观测

引用

science Bulletin 2024年第7期69卷 893-900页

作者：吴世巧程文婷刘啸宇吴柄权 Emil Prodan Camelia Prodan 蒋建华 School of Physical Science and Technology&Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow UniversitySuzhou 215006China School of Physics and Optoelectronic Engineering Foshan UniversityFoshan 528000China Guangdong-Hong Kong-Macao Joint Laboratory for Intelligent Micro-Nano Optoelectronic Technology Foshan UniversityFoshan 528000China Department of Physics University of MichiganAnn Arbor MI 48109USA Department of Physics Yeshiva UniversityNew York NY 10033USA Department of Physics and Engineering Physics Fordham UniversityNew York NY 10023USA Suzhou Institute for Advanced Research University of Science and Technology of ChinaSuzhou 215123China

Topological materials and metamaterials opened new paradigms to create and manipulate phases of matter with unconventional *** D-class phases(TDPs)are archetypes of the ten-fold classification of topological phases with particle-hole *** two dimensions,TDPs support propagating topological edge modes that simulate the elusive Majorana elementary ***,a piercing ofπ-flux Dirac-solenoids in TDPs stabilizes localized Majorana excitations that can be braided for the purpose of topological quantum *** two-dimensional(2D)TDPs have been a focus in the research frontier,but their experimental realizations are still under ***,with a novel design scheme,we realize 2D TDPs in an acoustic crystal by synthesizing both the particle-hole and fermion-like time reversal symmetries for a wide range of *** design scheme leverages an enriched unit cell structure with real-valued couplings that emulate the targeted Hamiltonian of TDPs with complex hoppings:A technique that could unlock the realization of all topological classes with passive *** our experiments,we realize a pair of TDPs with opposite Chern numbers in two independent sectors that are connected by an intrinsic fermion-like timereversal symmetry built in the *** measure the acoustic Majorana-like helical edge modes and visualize their robust topological transport,thus revealing the unprecedented D and DIII class topologies with direct *** study opens up a new pathway for the experimental realization of two fundamental classes of topological phases and may offer new insights in fundamental physics,materials science,and phononic information processing.

关键词： D-class topology Chiral symmetry Time-reversal symmetry Particle-hole symmetry Gapless edge states

来源：评论

学校读者我要写书评

暂无评论

Bi selectively doped SrTiO3-x nanosheets enhance photocatalytic CO2 reduction under visible light

引用

Journal of Colloid and Interface science 2022年 611卷 137-148页

作者： Pan, Longkai Mei, Hui Zhu, Gangqiang Li, Shiping Xie, Xiaoqian Gong, Siwen Liu, Hongxia Jin, Zhipeng Gao, Jianzhi Cheng, Laifei Zhang, Litong Science and Technology on Thermostructural Composite Materials Laboratory School of Materials Science and Engineering Northwestern Polytechnical University Xi’ anShaanxi710072 China School of Physics and Information Technology Shaanxi Normal University Xi’ an710062 China Department of Physics and Oxide Research Center Hankuk University of Foreign Studies Yongin17035 Korea Republic of

Converting CO2 into chemical energy by using solar energy is an environmental strategy to achieve carbon neutrality. In this paper, two dimensionality (2D) SrTiO3-x nanosheets with oxygen vacancies were synthesized successfully. Oxygen vacancies will generate defect levels in the band structure of SrTiO3-x. So, SrTiO3-x nanosheets have good photocatalytic CO2 reduction performance under visible light. In order to further improve its photocatalytic efficiency, Bi was used to dope Sr site and Ti site in SrTiO3-x nanosheets respectively. It is found that Sr site is the adsorption site of CO2 molecules. When Bi replaced Sr, CO2 adsorption on the surface of SrTiO3-x nanosheets was weakened. When Bi replaced Ti, there has no effect on CO2 adsorption. Due to the synergistic effect of Bi doping, oxygen vacancies, and Sr active site, the 1.0% Bi-doped Ti site in SrTiO3-x (1.0% Bi-Ti-STO) had the best photocatalytic performance under visible light (λ ≥ 420 nm). CO and CH4 yields were 5.58 umol/g/h and 0.36 umol/g/h. Photocatalytic CO2 reduction path has always been the focus of exploration. The in-situ FTIR spectrum proved the step of photocatalytic CO2 reduction and COO– and COOH are important intermediates in the photocatalytic CO2 reaction. © 2021 Elsevier Inc.

关键词： Nanosheets

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：