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Regulating surface base of LiCoO_(2) to inhibit side reactions between LiCoO_(2) and sulfide electrolyte
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作者 Kai Yang Rong-Zheng Tian +6 位作者 Zhen-Yu Wang Hong-Zhou Zhang Yue Ma Xi-Xi Shi Da-Wei Song Lian-Qi Zhang Ling-Yun Zhu 《Rare Metals》 SCIE EI CAS CSCD 2023年第12期4128-4141,共14页
The interface instability between layered oxide cathode and sulfide electrolyte is a key point affecting the perform ance of sulfide-based all-solid-state lithium batteries.Coating with fast-ionic conductor and constr... The interface instability between layered oxide cathode and sulfide electrolyte is a key point affecting the perform ance of sulfide-based all-solid-state lithium batteries.Coating with fast-ionic conductor and constructing core-shell structure can effectively alleviate the interfacial side reactions and improve the interfacial stability between layered oxide and sulfide electrolyte.However,what have been neglected is the surface base(including Li_(2)CO_(3) and LiOH)of layered oxide can also affect the interfacial stability.To clarify this point clearly and improve the interfacial stability,the surface base of LiCoO_(2)(LCO)is regulated and investigated in this work.First,LCO with surface base Li_(2)CO_(3)(LCO@Li_(2)CO_(3))is prepared by the reaction of Co_(3)O_4 and excess Li_(2)CO_(3).Then,the bare LCO is obtained after LCO@Li_(2)CO_(3) is washed with deionized water and calcined again.Besides,LCO with surface base Li_(2)O(LCO@Li_(2)O)is also prepared with the bare LCO and LiOH.As a result,the electrochemical performances of LCO@Li_(2)O are significantly improved and much higher than those of LCO@Li_(2)CO_(3) and the bare LCO electrodes.In particular,LCO@Li_(2)O-2 cathode display the most outstanding electrochemical performances(discharge capacity138.4 mAh·g^(-1)at 0.2C,105 mAh·g^(-1)at 2C and a capacity retention of 95.4%after 150 cycles at 0.5C).The high discharge capacity and excellent cycle stability of LCO@Li_(2)O electrode confirm the effectiveness of regulating the surface base of layered oxide from Li_(2)CO_(3) to Li_(2)O.The surface base regulating is expected to be a simple but effective strategy to construct the stable interface between the cathode and the sulfide electrolyte of the all-solid-state lithium batteries. 展开更多
关键词 All-solid-state lithium battery Sulfide electrolyte LiCoO_(2) surface base Interfacial stability
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Dark-field detection method of shallow scratches on the super-smooth optical surface based on the technology of adaptive smoothing and morphological differencing 被引量:2
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作者 李晨 杨甬英 +9 位作者 柴惠婷 张毅晖 吴凡 周林 闫凯 白剑 沈亦兵 许乔 姜宏振 刘旭 《Chinese Optics Letters》 SCIE EI CAS CSCD 2017年第8期53-57,共5页
In recent years, modern optical processing technologies, such as single point diamond turning, ion beam etching, and magneto-theological finishing, arc getting break- throughs. Machining precisions of super-smooth opt... In recent years, modern optical processing technologies, such as single point diamond turning, ion beam etching, and magneto-theological finishing, arc getting break- throughs. Machining precisions of super-smooth optics have also been significantly improved. However, with increasing demands for the optical surface quality, 展开更多
关键词 Dark-field detection method of shallow scratches on the super-smooth optical surface based on the technology of adaptive smoothing and morphological differencing
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Control of rotary double inverted pendulum system using LQR sliding surface based sliding mode controller
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作者 Sondarangallage D.A.Sanjeewa Manukid Parnichkun 《Journal of Control and Decision》 EI 2022年第1期89-101,共13页
This paper presents LQR sliding surface-based Sliding Mode Controller(LQR-SMC)for balancing control of a Rotary Double Inverted Pendulum(RDIP)system.It is a challenging research topic in control engineering due to its... This paper presents LQR sliding surface-based Sliding Mode Controller(LQR-SMC)for balancing control of a Rotary Double Inverted Pendulum(RDIP)system.It is a challenging research topic in control engineering due to its nonlinearity and instability.The RDIP system uses only a motor to control two serially connected pendulums to stand at the upright position.The sliding surface is designed based on the LQR optimal gain.Nonsingular gain matrix is obtained by using the left inverse of the input matrix in the state space form of the system dynamics.The Lyapunov stability theory is used to determine the stability of the controller.To evaluate the performance of LQR-SMC,some performance indices,including the Integral Absolute Error(IAE),Integral Time Absolute Error(ITAE),and the Integrated Square Error(ISE),are used.System stability can be maintained by LQR-SMC under external disturbances as well as model and parameter uncertainties. 展开更多
关键词 Rotary double inverted pendulum linear quadratic regulator sliding surface based sliding mode control SMC LQR
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Surface Acoustic Wave Humidity Sensors Based on(1120) ZnO Piezoelectric Films Sputtered on R-Sapphire Substrates 被引量:3
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作者 王艳 张淑仪 +2 位作者 范理 水修基 杨跃涛 《Chinese Physics Letters》 SCIE CAS CSCD 2015年第8期123-126,共4页
ZnO films on R-sapphire substrates are prepared and characterized by x-ray diffraction and scanning electron microscopy, which indicate that the thin films are well crystallized with (1120) texture. Love wave and Ra... ZnO films on R-sapphire substrates are prepared and characterized by x-ray diffraction and scanning electron microscopy, which indicate that the thin films are well crystallized with (1120) texture. Love wave and Rayleigh wave are used for fabrications of humidity sensors, which are excited in [1100] and [0001] directions of the (1120) ZnO piezoelectric films, respectively. The experimental results show that both kinds of sensors have good humidity response and repeatability, and the performances of the Love wave sensors are better than those of the Rayleigh wave sensors at room temperature. Moreover, the theoretical calculations of the mass sensitivity of the sensors are a/so carried out and the calculated results are in good agreement with the experimental measurements. 展开更多
关键词 ZnO Piezoelectric Films Sputtered on R-Sapphire Substrates surface Acoustic Wave Humidity Sensors based on
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Determination of Slip Length in Couette Flow Based on an Analytical Simulation Incorporating Surface Interaction 被引量:1
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作者 赵欣 魏超 苑士华 《Chinese Physics Letters》 SCIE CAS CSCD 2017年第3期77-81,共5页
An analytical simulation based on a new model incorporating surface interaction is conducted to study the slip phenomenon in the Couette flow at different scales. The velocity profile is calculated by taking account o... An analytical simulation based on a new model incorporating surface interaction is conducted to study the slip phenomenon in the Couette flow at different scales. The velocity profile is calculated by taking account of the micro-force between molecules and macro-force from the viscous shearing effect, as they contribute to the achieve- ment of the slip length. The calculated results are compared with those obtained from the molecular dynamics simulation, showing an excellent agreement. Further, the effect of the shear rate on the slip is investigated. The results can well predict the fluid flow behaviors on a solid substrate, but has to be proved by experiment. 展开更多
关键词 MD Determination of Slip Length in Couette Flow based on an Analytical Simulation Incorporating surface Interaction
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Efficient volume preserving approach for skeleton-based implicit surfaces
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作者 史红兵 童若锋 董金祥 《Journal of Zhejiang University Science》 EI CSCD 2003年第6期637-642,共6页
This paper presents an efficient way to preserve the volume of implicit surfaces generated by skeletons. Recursive subdivision is used to efficiently calculate the volume. The criterion for subdivision is obtained by ... This paper presents an efficient way to preserve the volume of implicit surfaces generated by skeletons. Recursive subdivision is used to efficiently calculate the volume. The criterion for subdivision is obtained by using the property of density functions and treating different types of skeletons respectively to get accurate minimum and maximum distances from a cube to a skeleton. Compared with the criterion generated by other ways such as using traditional Interval Analysis, Affine Arithmetic, or Lipschitz condition, our approach is much better both in speed and accuracy. 展开更多
关键词 Volume preserving Skeleton based implicit surface Subdivision criterion Interval analysis
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Protein Based Localized Surface Plasmon Resonance Gas Sensing
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作者 Meisam Omidi Gh.Amoabediny +1 位作者 F.Yazdian M.Habibi-Rezaei 《Chinese Physics Letters》 SCIE CAS CSCD 2015年第1期166-169,共4页
We apply the localized surface plasrnon resonance (LSPR) of gold nanoparticles (GNPs) covalently coupled with cytochrorne c (cyt c) to create a nanobiosensor for detecting hydrogen sulfide (H2S) in the range o... We apply the localized surface plasrnon resonance (LSPR) of gold nanoparticles (GNPs) covalently coupled with cytochrorne c (cyt c) to create a nanobiosensor for detecting hydrogen sulfide (H2S) in the range of 15 lOOppb. Monolayer formation of GNPs on glass surface functionalized with 3-aminopropyltrirnethoxysilane (APTMS) is performed for fabricating a chip-based format of the optical transducer. By chemical introduction of short-chain thiol derivatives on cyt c protein shell via its lysine residues, a very fast self-assembled rnonolayer (SAM) of cyt c is formed on the GNPs. Significant shifts in the LSPR peak (△λLSPR) are observed by reacting H2S with cyt c. Results show a linear relationship between △λLSPR and H2S concentration. Furthermore, shifts in the LSPR peak are reversible and the peak positions return to their pre-exposure values once the H2S is removed. The experirnental results strongly indicate that the protein based LSPR chip can be successfully used as a simple, fast, sensitive and quantitative sensor for H2S detection. 展开更多
关键词 Protein based Localized surface Plasmon Resonance Gas Sensing
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Waveguide Mode Splitter Based on Multi-mode Dielectric-Loaded Surface Plasmon Polariton Waveguide
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作者 蔡永旌 李明 +4 位作者 熊霄 余乐 任希锋 郭国平 郭光灿 《Chinese Physics Letters》 SCIE CAS CSCD 2015年第10期113-116,共4页
In photonie integrated circuits, information is usually encoded in the optical path. In this work, based on the multi-mode dielectric-loaded surface plasmon polariton waveguide, we numerically design a directional cou... In photonie integrated circuits, information is usually encoded in the optical path. In this work, based on the multi-mode dielectric-loaded surface plasmon polariton waveguide, we numerically design a directional coupler, which can divide the different waveguide eigenmodes into different optical paths. The results show a possibility to encode information onto different waveguide modes. We also experimentally demonstrate that the splitting ratio of this directional coupler structure can be tuned without changing its size. 展开更多
关键词 TM Waveguide Mode Splitter based on Multi-mode Dielectric-Loaded surface Plasmon Polariton Waveguide
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Generating Parametric G^n Blending Surface with Some Constraints 被引量:4
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作者 宋遒志 戴全辉 +1 位作者 陈立平 钟毅芳 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2003年第2期108-116,共9页
This paper presents a method of generating a parametric G^n blending surfacebased on reparameterizing the partial surface patches in the base surfaces on the basis of ErichHartmann method. This method is expressed as ... This paper presents a method of generating a parametric G^n blending surfacebased on reparameterizing the partial surface patches in the base surfaces on the basis of ErichHartmann method. This method is expressed as follows Firstly, the partial region near contact curvesin both base surfaces is reparameterized. The contact curves are used as the boundaries of thereparameterized partial region respectively. The reparameterized partial region in two base surfacesis called the reparameterized local base surfaces. Then the parametric G^n blending surface isgenerated by a linear combination of the reparameterized local base surface patches depending on oneof the common parameters. Therefore, generating a Parametric G^n Blending Surface between two basesurfaces is translated into generating a Parametric G^n Blending Surface between the tworeparameterized local base surfaces. This paper illustrates the method to generate the G^n blendingsurface with some constraints by generating a G^2 blending surface between the aerofoil and the bodyof a missile with the constraints of the forward and rear fringe curves. When the G^n blendingsurface with some constraints is generated, the partial region near contact curves in both basesurfaces is reparameterized, and the scale factors, offset, balance factor and thumb weight aredefined by meeting the constraints through using an optimization method. Then the parametric G^nblending surface is generated by the linear combination of the reparameterized local base surfacepatches. The shape of the blending surface can be adjusted by changing the size of thereparameterized local base surface patches. 展开更多
关键词 blending surface reparameterized local base surface contact curve linearcombination CONSTRAINTS optimization
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Investigation on Cracking in the Surfacing Welding Layer of Ni_3Al Based Alloy
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作者 Guangwei HAN Di FENG and Wujun YE (Dept.5, Central Iron and Steel Research Institute, Beijing, 100081, China)(To whom correspondence should be addressed) 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 1994年第5期347-350,共4页
Investigation has been made into the causes of cracking in the Surfacing welding layer of Ni3Al based alloy by analysing both the liqu id-to-solid transformation in the molten pool and the distribution of thermal stre... Investigation has been made into the causes of cracking in the Surfacing welding layer of Ni3Al based alloy by analysing both the liqu id-to-solid transformation in the molten pool and the distribution of thermal stress within the surfacing welding layer. The results show that cracking in the surfacing welding layer is directly related to the producing of eutectic phase β' (NiAl) in the interdendritic region and high thermal stress within the surfacing welding layer. When the process of electric arc surfacing welding is changed from along straight line to along' Z' pattern, cracking in the surfacing welding layer of Ni3Al based alloy is prevented due to being reduced of both the cooling rate of liquid in the molten pool and the moving speed of the heat source. Reducing the melting volume of the substrate material by lowering the output power of electric arc welding would make the content of iron atoms in the molten pool decrease. and this also can reduce the trend of the eutectic reaction in the interdendfitic region and is helpful to Suppress cracking in the surfacing welding layer. 展开更多
关键词 Al Investigation on Cracking in the Surfacing Welding Layer of Ni3Al based Alloy NI
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ANALYSIS OF TOOTH FORM ERROR OF EQUAL BASE CIRCLE BEVEL GEAR 被引量:1
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作者 Gong Yunpeng Ding Shichao Cai Chunyuan(Northeastern University) 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 1995年第4期287-290,共17页
The basic principle of equal base circle bevel gear (EBCBG) is illustrated simply Thetooth surface equation of EBCBG manufactured by end milling cutter with involute profile is de-rived. The tooth form error is analy... The basic principle of equal base circle bevel gear (EBCBG) is illustrated simply Thetooth surface equation of EBCBG manufactured by end milling cutter with involute profile is de-rived. The tooth form error is analyzed on the basis of spherical involute 展开更多
关键词 Equal base circle bevel gear Tooth surface equation Tooth form error
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Ultrasensitive biosensors based on long-range surface plasmon polariton and dielectric waveguide modes 被引量:4
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作者 Leiming Wu Jun Guo +2 位作者 Hailin Xu Xiaoyu Dai Yuanjiang Xiang 《Photonics Research》 SCIE EI 2016年第6期262-266,共5页
An ultrasensitive biosensor based on hybrid structure and composed of long-range surface plasmon polariton(LRSPP) and dielectric planar waveguide(PWG) modes is proposed. Both PWG and LRSPP modes have strong resonances... An ultrasensitive biosensor based on hybrid structure and composed of long-range surface plasmon polariton(LRSPP) and dielectric planar waveguide(PWG) modes is proposed. Both PWG and LRSPP modes have strong resonances to form strong coupling between the two modes, and the two modes can couple to enhance sensitivity of sensors. In the hybrid structure, PWG is composed of cytop–Si–cytop multilayers and the LRSPP configuration is composed of cytop–metal–sensing medium multilayer slabs. The highest imaging sensitivities of 2264 and3619 RIU-1were realized in the proposed sensors based on Au and Al-monolayer graphene, respectively, which are nearly 1.2 and 1.9 times larger than the 1910 RIU-1sensitivity of the conventional LRSPR sensor(LRSPP sensor). Moreover, it is demonstrated that the PWG-coupled LRSPP biosensor is applicable to the sensing medium,with refractive index in the vicinity of 1.34. 展开更多
关键词 RIU Ultrasensitive biosensors based on long-range surface plasmon polariton and dielectric waveguide modes
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Road surface condition sensor based on scanning detection of backward power 被引量:3
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作者 徐松松 阮驰 冯丽丽 《Chinese Optics Letters》 SCIE EI CAS CSCD 2014年第5期19-22,共4页
A method of detecting dry, icy and wet road surface conditions based on scanniag detection of single wavelength backward power is proposed in this letter. The detector is used to receive the backward scattered power w... A method of detecting dry, icy and wet road surface conditions based on scanniag detection of single wavelength backward power is proposed in this letter. The detector is used to receive the backward scattered power which changes with the incidence angle. The relationship between backward power and incidence angle is used to find out the effective angle range and distinguish method. Experiment and simulation show that it is feasible to classifv these three conditions within incidence angle of 5.3 degree. 展开更多
关键词 Road surface condition sensor based on scanning detection of backward power
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High sensitivity D-shaped hole fiber temperature sensor based on surface plasmon resonance with liquid filling 被引量:3
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作者 SIJUN WENG LI PEI +2 位作者 JIANSHUAI WANG TIGANG NING JING LI 《Photonics Research》 SCIE EI 2017年第2期103-107,共5页
A high sensitivity D-shaped hole double-cladding fiber temperature sensor based on surface plasmon resonance(SPR)is designed and investigated by a full-vector finite element method.Within the D-shaped hole doublecladd... A high sensitivity D-shaped hole double-cladding fiber temperature sensor based on surface plasmon resonance(SPR)is designed and investigated by a full-vector finite element method.Within the D-shaped hole doublecladding fiber,the hollow D-section is coated with gold film and then injected in a high thermo-optic coefficient liquid to realize the high temperature sensitivity for the fiber SPR temperature sensor.The numerical simulation results show that the peaking loss of the D-shaped hole double-cladding fiber SPR is hugely influenced by the distance between the D-shaped hole and fiber core and by the thickness of the gold film,but the temperature sensitivity is almost insensitive to the above parameters.When the thermo-optic coefficient is -2.8×10^(-4)∕℃,the thickness of the gold film is 47 nm,and the distance between the D-shaped hole and fiber core is 5μm,the temperature sensitivity of the D-shaped hole fiber SPR sensor can reach to -3.635 nm∕℃. 展开更多
关键词 High sensitivity D-shaped hole fiber temperature sensor based on surface plasmon resonance with liquid filling MODE
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High-sensitivity integrated devices based on surface plasmon resonance for sensing applications 被引量:3
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作者 MAHMOUD H.ELSHORBAGY ALEXER CUADRADO JAVIER ALDA 《Photonics Research》 SCIE EI 2017年第6期173-180,共8页
A metallic nanostructured array that scatters radiation toward a thin metallic layer generates surface plasmon resonances for normally incident light. The location of the minimum of the spectral reflectivity serves to... A metallic nanostructured array that scatters radiation toward a thin metallic layer generates surface plasmon resonances for normally incident light. The location of the minimum of the spectral reflectivity serves to detect changes in the index of refraction of the medium under analysis. The normal incidence operation eases its integration with optical fibers. The geometry of the arrangement and the material selection are changed to optimize some performance parameters as sensitivity, figure of merit, field enhancement, and spectral width. This optimization takes into account the feasibility of the fabrication. The evaluated results of sensitivity(1020 nm/RIU)and figure of merit(614 RIU^(-1)) are competitive with those previously reported. 展开更多
关键词 High-sensitivity integrated devices based on surface plasmon resonance for sensing applications
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Finite element model updating of a rod-type ultrasonicmotor based on response surface method 被引量:2
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作者 TAO Zheng LIU Xu HU Bin 《Chinese Journal of Acoustics》 CSCD 2018年第1期89-98,共10页
The conventional finite element model (FEM) of a rod-type ultrasonic motor is usually simplified by means of continuous composite structure. Because the actual contact characteristics between the parts of the ultras... The conventional finite element model (FEM) of a rod-type ultrasonic motor is usually simplified by means of continuous composite structure. Because the actual contact characteristics between the parts of the ultrasonic motor is ignored, there is bigger error between the calculated values and experimental results. Aiming at solving problem, a new modeling method of a rod-type ultrasonic motor is presented to obtain a high-accuracy FEM. The bolt pretension and the normal contact stiffness and friction coefficient of the contact surface of ultrasonic motor are all considered in this method, and the significant parameters of working mode of the motor are selected by the response surface method, and the goal of calculating the structural response rapidly is realized by building the response surface model to replace the FEM. The result of finite element model updating shows that the average error of modal frequencies of updated model drops to 0.21% from 1.20%. The accuracy of FEM is obviously improved, which indicates that the FEM updating based on response surface method is of great application value on the design for a rod-type ultrasonic motor. 展开更多
关键词 FEM Finite element model updating of a rod-type ultrasonicmotor based on response surface method
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Absolute surface form measurement of flat optics based on oblique incidence method 被引量:1
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作者 Longbo Xu Shijie Liu +2 位作者 Rihong Zhu You Zhou Jie Chen 《Chinese Optics Letters》 SCIE EI CAS CSCD 2018年第10期30-33,共4页
In this Letter, a test method based on oblique incidence is practically implemented in the interferometric measurement process. Three sets of wavefront data are achieved through cavity interference measurement with a ... In this Letter, a test method based on oblique incidence is practically implemented in the interferometric measurement process. Three sets of wavefront data are achieved through cavity interference measurement with a Fizeau interferometer and one oblique incidence measurement. An iterative algorithm is applied to retrieve the absolute surface shape of the test flat. By adding two sets of measurements, the absolute surface error of the interferometer's reference flat can be obtained. The new method can not only calibrate the reference flat error of interferometer, but also provide the absolute measurement method for high precision optical components applied in high power laser systems. 展开更多
关键词 Absolute surface form measurement of flat optics based on oblique incidence method
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Optical fiber sensor based on the short-range surface plasmon polariton mode
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作者 王晓妍 刘仿 +5 位作者 刘奥 樊博宇 崔开宇 冯雪 张巍 黄翊东 《Chinese Optics Letters》 SCIE EI CAS CSCD 2014年第1期9-12,共4页
An optical fiber sensor for ultrathin layer sensing based o51 short-range surface plasmon polariton (SRSPP) is proposed, and the sensing characteristics are theoretically analyzed. Simulation results indicate that e... An optical fiber sensor for ultrathin layer sensing based o51 short-range surface plasmon polariton (SRSPP) is proposed, and the sensing characteristics are theoretically analyzed. Simulation results indicate that even for a detecting layer much thinner than the vacuum wavelength, a resolution as high as 3.7×10-6 RIU can be obtained. Moreover, an average ttfickness-detection sensitivity of 6.2 dB/nm is obtained, which enables the sensor to detect the thickness variation of the ultrathin layer up to tens of nanometers. The sensitive region of thickness could be adjusted by tuning the structure parameters. 展开更多
关键词 Optical fiber sensor based on the short-range surface plasmon polariton mode NM RIU
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Outboard abnormal noise source localization method with curved surface projection based on time delay matching and weighting criterion
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作者 YU Wenjing HE Lin +2 位作者 CUI Lilin XU Rongwu LI Ruibiao 《Chinese Journal of Acoustics》 CSCD 2018年第4期448-462,共15页
An improved localization method consisting of "filtering-time delay estimationhyperbolic localization" is proposed. Combining the empirical mode decomposition(EMD)and time delay estimation method based on generali... An improved localization method consisting of "filtering-time delay estimationhyperbolic localization" is proposed. Combining the empirical mode decomposition(EMD)and time delay estimation method based on generalized average magnitude difference function,the original signals are decomposed into intrinsic mode function(IMF) components. The energy distribution criterion and spectrum consistency criterion are used to select the IMFs, which can represent the physical characteristics of the source signal. Several sets of signals are applied to estimate the time delay, and then a vector matching criterion is proposed to select the correct time delay estimation. Considering the hydrophones location, a shell model is established and projected to a plane according to the quadrant before the hyperbolic localization. Results of mooring and sailing tests show that the proposed method improves the localization accuracy,and reduces the error caused by time delay estimation. 展开更多
关键词 Outboard abnormal noise source localization method with curved surface projection based on time delay matching and weighting criterion
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