期刊文献+
共找到47篇文章
< 1 2 3 >
每页显示 20 50 100
Stress-Induced Deformation of Thin Copper Substrate in Double-Sided Lapping
1
作者 Jiang Guo Zengxu He +4 位作者 Bo Pan Bin Wang Qian Bai Jinxing Kong Renke Kang 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2023年第1期80-89,共10页
Double-sided lapping is an precision machining method capable of obtaining high-precision surface.However,during the lapping process of thin pure copper substrate,the workpiece will be warped due to the influence of r... Double-sided lapping is an precision machining method capable of obtaining high-precision surface.However,during the lapping process of thin pure copper substrate,the workpiece will be warped due to the influence of residual stress,including the machining stress and initial residual stress,which will deteriorate the flatness of the workpiece and ultimately affect the performance of components.In this study,finite element method(FEM)was adopted to study the effect of residual stress-related on the deformation of pure copper substrate during double-sided lapping.Considering the initial residual stress of the workpiece,the stress caused by the lapping and their distribution characteristics,a prediction model was proposed for simulating workpiece machining deformation in lapping process by measuring the material removal rate of the upper and lower surfaces of the workpiece under the corresponding parameters.The results showed that the primary cause of the warping deformation of the workpiece in the doublesided lapping is the redistribution of initial residual stress caused by uneven material removal on the both surfaces.The finite element simulation results were in good agreement with the experimental results. 展开更多
关键词 Machining deformation double-sided lapping Residual stress Finite element simulation
下载PDF
Formation, microstructure and mechanical properties of double-sided laser beam welded Ti-6Al-4V T-joint 被引量:4
2
作者 马旭颐 巩水利 +2 位作者 张久兴 芦伟 杨璟 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2016年第3期729-735,共7页
The T-joints of Ti?6Al?4V alloy were manufactured by double-sided synchronized laser beam welding with the homologous filler wire. The formation, microstructure and mechanical properties of welded joints as well as th... The T-joints of Ti?6Al?4V alloy were manufactured by double-sided synchronized laser beam welding with the homologous filler wire. The formation, microstructure and mechanical properties of welded joints as well as the correlations of each other were investigated. The results indicate that the quality of weld seams is good without defects such as discontinuity, beading, visible cracks or porosity, which is linked to the steady molten pool behavior and droplet transition. The morphologies of the heat affected zone (HAZ) located on the skin and stringer are disparate. The microstructure of the HAZ and fusion zone (FZ) is mainly comprised of acicular martensiticα′ phases. The microhardness of the HAZ and FZ is higher than that of the base metal (BM) and reaches a maximum value at the HAZ near FZ on the stringer. The tensile specimens along the skin and stringer fractured at the BM with ductile fracture surfaces. 展开更多
关键词 Ti-6Al-4V alloy double-sided laser beam welding T-JOINT high-speed photography microstructure mechanical property
下载PDF
Characterization of CIAE developed double-sided silicon strip detector for charged particles 被引量:3
3
作者 Xin-Xing Xu Fanurs C.E.Teh +17 位作者 Cheng-Jian Lin Jenny Lee Feng Yang Zhao-Qiao Guo Tian-Shu Guo Li-Jie Sun Xin-Zhi Teng Jia-Jian Liu Peng-Jie Li Peng-Fei Liang Lei Yang Nan-Ru Ma Hui-Ming Jia Dong-Xi Wang Sylvain Leblond Taras Lokotko Qing-Qing Zhao Huan-Qiao Zhang 《Nuclear Science and Techniques》 SCIE CAS CSCD 2018年第5期98-103,共6页
A double-sided silicon strip detector(DSSD)with active area of 48 mm x 48 mm and thickness of300μm has been developed. Each side of DSSD consists of48 strips, each with width of 0.9 mm and inter-strip separation of 0... A double-sided silicon strip detector(DSSD)with active area of 48 mm x 48 mm and thickness of300μm has been developed. Each side of DSSD consists of48 strips, each with width of 0.9 mm and inter-strip separation of 0.1 mm. Electrical properties and detection performances including full depletion bias voltage, reverse leakage current, rise time, energy resolution and cross talk have been studied. At a bias of 80 V, leakage current in each strip is less than 15 nA, and rise time for alpha particle at 5157 keV is approximately 15 ns on both sides.Good energy resolutions have been achieved with0.65-0.80% for the junction strips and 0.85-1.00% for the ohmic strips. The cross talk is found to be negligible on both sides. The overall good performance of DSSD indicates its readiness for various nuclear physics experiments. 展开更多
关键词 double-sided silicon STRIP detector P-stop Detection performance CROSS TALK
下载PDF
Numerical Simulation of Current Density Distribution in Keyhole Double-Sided Arc Welding 被引量:3
4
作者 JunshengSUN ChuansongWU +1 位作者 MinZHANG HouxiaoWANG 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2004年第2期228-231,共4页
In the double-sided arc welding system (DSAW) composing of PAW+TIG arcs, the PAW arc is guided by the TIG arc so that the current mostly flows through the direction of the workpiece thickness and the penetration is gr... In the double-sided arc welding system (DSAW) composing of PAW+TIG arcs, the PAW arc is guided by the TIG arc so that the current mostly flows through the direction of the workpiece thickness and the penetration is greatly improved. To analyze the current density distribution in DSAW is beneficial to understanding of this process. Considering all kinds of dynamic factors acting on the weldpool, this paper discusses firstly the surface deformation of the weldpool and the keyhole formation in PAW+TIG DSAW process on the basis of the magnetohydrodynamic theory and variation principles. Hence, a model of the current density distribution is developed. Through numerical simulation, the current density distribution in PAW+TIG DSAW process is quantitatively analyzed. It shows that the minimal radius of keyhole formed in PAW+TIG DSAW process is 0.5 mm and 89.5 percent of current flows through the keyhole. 展开更多
关键词 PAW+TIG double-sided arc welding Surface deformation of the weldpool KEYHOLE Current density distribution
下载PDF
Effect of pin penetration depth on double-sided friction stir welded joints of AA6061-T913 alloy 被引量:2
5
作者 Iman HEJAZI Seyyed Ehsan MIRSALEHI 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2016年第3期676-683,共8页
Friction stir welding (FSW) of aluminum alloys is currently utilized in several modern industries. The joints must have sufficient elastic?plastic response and formability levels similar to that of the base metal. In ... Friction stir welding (FSW) of aluminum alloys is currently utilized in several modern industries. The joints must have sufficient elastic?plastic response and formability levels similar to that of the base metal. In this work, double-sided FSW of AA6061 sheet was compared with its conventional single-sided one. An adjustable tool with different pin lengths (50%?95% of the sheet thickness) was used to perform the double-sided welds. Macro- and micro-structures, strength, and hardness of the joints were investigated to determine the optimum pin penetration depth. The best results were obtained for a double-sided joint made by a pin length equal to 65% of the sheet thickness, which showed an increase of 41% in the ultimate tensile strength compared with the single-sided joint. 展开更多
关键词 AA6061 aluminium alloy friction stir welding double-sided joint pin length mechanical properties microstructure
下载PDF
Keyhole Double-Sided Arc Welding Process 被引量:2
6
作者 Yuming ZHANG Shaobin ZHANG and bang JIANG Welding Research Laboratory, Center for Robottes and Manufacturing Systems, University of Kentucky, Lexington, Kentucky 40506, USA. Lin WU National Key Laboratory for Advanced Welding Production Technology, Harbi 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2001年第1期159-160,共2页
In the proposed method, the current/arc is guided through the keyhole so that the energy of the plasma jet is compensated while it is consumed in heating the workpiece along the keyhole. As a result, deep narrow penet... In the proposed method, the current/arc is guided through the keyhole so that the energy of the plasma jet is compensated while it is consumed in heating the workpiece along the keyhole. As a result, deep narrow penetration has been achieved on 12.7 mm (1/2') thick stainless steel plates using 70 A welding current. 展开更多
关键词 ARC Keyhole double-sided Arc Welding Process ZHANG
下载PDF
Nonlinear optical properties in double-sided nonlinear media with Z-scan technique based on the Huygens-Fresnel principle 被引量:1
7
作者 欧阳秋云 张学如 +3 位作者 蒋礼 常青 王玉晓 宋瑛林 《Chinese Physics B》 SCIE EI CAS CSCD 2006年第8期1810-1814,共5页
We present a theoretical model to analyse the propagation of a Gaussian laser beam through double-sided nonlinear media. This model is based on the Huygens-Fresnel diffraction integral method. This theoretical model i... We present a theoretical model to analyse the propagation of a Gaussian laser beam through double-sided nonlinear media. This model is based on the Huygens-Fresnel diffraction integral method. This theoretical model is not only consistent with the cascade structure model for a small nonlinear phase-shift but also can be used for a large nonlinear phase-shift. It has been verified that it is suitable to characterize the double-sided nonlinear media compared with the cascade structure model. A good agreement between the experimental data and the results from the theoretical model is obtained. It will be useful for the design of multi-sided nonlinear materials. 展开更多
关键词 optical nonlinearity double-sided nonlinear media Z-SCAN
原文传递
Numerical Simulation of Electromagnetic Force in Double-Sided Arc Welding Process
8
作者 Hongming GAO Lin WU Honggang DONG 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2003年第z1期223-224,共2页
Up till now, most of the researchers believe that there are four kinds of forces in the weld pool convection, they aresurface tension, electromagnetic force, buoyancy and gas shear stress. So electromagnetic force is ... Up till now, most of the researchers believe that there are four kinds of forces in the weld pool convection, they aresurface tension, electromagnetic force, buoyancy and gas shear stress. So electromagnetic force is very important,especially when large current is applied. In most of previous models, the electromagnetic force is calculated analytically,in which only the axial component of current is considered. Actually the radial component of current has thesame effect, and may be advanced in some locations. In double-sided arc welding process, instead of the earthclamp, another torch is placed on the opposite side; the current will go from one torch, through the weld zone,to another torch. In this case, the current is more concentrated in the weld zone; the electromagnetic force willhave significant effect compared with conventional welding process. In this paper, a new method of numericalcalculation for electromagnetic force is developed, in which both axial and radial components are considered. And asan example, the distribution of electromagnetic force in double-sided arc welding is calculated. It demonstrates thatthis new method could give more accurate simulation of electromagnetic force, and is close to the actual process. 展开更多
关键词 ELECTROMAGNETIC force NUMERICAL simulation double-sided ARC WELDING PROCESS
下载PDF
Evaporated potassium chloride for double-sided interfacial passivation in inverted planar perovskite solar cells
9
作者 Shasha Zhang Xiaobo Yan +7 位作者 Zonghao Liu Hongmei Zhu Zhichun Yang Yuqian Huang Sanwan Liu Di Wu Ming Pan Wei Chen 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2021年第3期493-500,共8页
Defect-induced charge carrier recombination at the interfaces between perovskite and adjacent charge transport layers restricts further improvements in the device performance of perovskite solar cells(PSCs).Defect pas... Defect-induced charge carrier recombination at the interfaces between perovskite and adjacent charge transport layers restricts further improvements in the device performance of perovskite solar cells(PSCs).Defect passivation at these interfaces can reduce trap states and inhibit the induced nonradiative recombination.Herein,we report a double-sided interfacial passivation via simply evaporating potassium chloride(DIP-KCl)at both the hole transport layer(HTL)/perovskite and perovskite/electron transport layer(ETL)interfaces in inverted planar PSCs.We demonstrate that the bottom KCl layer at the HTL/perovskite interface not only reduces the interfacial defects and improves the interfacial contact,but also leads to increased perovskite crystallinity,while the top KCl layer at the perovskite/ETL interface efficiently passivates the perovskite top surface defects and facilitates electron extraction at this interface.Thus,suppressed nonradiative recombination and faster charge extraction at both interfaces close to the perovskite layer can be achieved by using our DIP-KCl strategy.As a result,inverted PSCs based on DIP-KCl present an increased efficiency from 17.1% to 19.2% and enhanced stability,retaining over 90% of their initial efficiency after aging at maximum power point tracking for 1000 h.This work provides a simple and efficient way for defect passivation to further increase the efficiency and stability of PSCs. 展开更多
关键词 double-sided interfacial passivation KCL Defect passivation Nonradiative recombination Perovskite solar cells
下载PDF
Double-sided subduction with contrasting polarities beneath the Pamir-Hindu Kush:Evidence from focal mechanism solutions and stress field inversion
10
作者 Yu Yang Zuoxun Zeng +1 位作者 Scott D.King Xiao Shuang 《Geoscience Frontiers》 SCIE CAS CSCD 2022年第4期98-113,共16页
The Pamir-Hindu Kush region at the western end of the Himalayan-Tibet orogen is one of the most active regions on the globe with strong seismicity and deformation and provides a window to evaluate continental collisio... The Pamir-Hindu Kush region at the western end of the Himalayan-Tibet orogen is one of the most active regions on the globe with strong seismicity and deformation and provides a window to evaluate continental collision linked to two intra-continental subduction zones with different polarities.The seismicity and seismic tomography data show a steep northward subducting slab beneath the Hindu Kush and southward subducting slab under the Pamir.Here,we collect seismic catalogue with 3988 earthquake events to compute seismicity images and waveform data from 926 earthquake events to invert focal mechanism solutions and stress field with a view to characterize the subducting slabs under the Pamir-Hindu Kush region.Our results define two distinct seismic zones:a steep one beneath the Hindu Kush and a broad one beneath the Pamir.Deep and intermediate-depth earthquakes are mainly distributed in the Hindu Kush region which is controlled by thrust faulting,whereas the Pamir is dominated by strike-slip stress regime with shallow and intermediate-depth earthquakes.The area where the maximum principal stress axis is vertical in the southern Pamir corresponds to the location of a highconductivity low-velocity region that contributes to the seismogenic processes in this region.We interpret the two distinct seismic zones to represent a double-sided subduction system where the Hindu Kush zone represents the northward subduction of the Indian plate,and the Pamir zone shows southward subduction of the Eurasian plate.A transition fault is inferred in the region between the Hindu Kush and the Pamir which regulates the opposing directions of motion of the Indian and Eurasian plates. 展开更多
关键词 Pamir-Hindu Kush SEISMICITY Stress field double-sided subduction Low-velocity body
下载PDF
Penetration mechanism of aluminum alloy in double-sided GTAW process
11
作者 高洪明 吴林 董红刚 《中国有色金属学会会刊:英文版》 CSCD 2005年第S2期35-38,共4页
The penetration mechanism of aluminum alloy in double-sided gas tungsten arc welding (GTAW) process was probed by means of theoretical analysis, experimentation and numerical simulation. The results show that, firstly... The penetration mechanism of aluminum alloy in double-sided gas tungsten arc welding (GTAW) process was probed by means of theoretical analysis, experimentation and numerical simulation. The results show that, firstly, the welding current goes straight through the weld zone, forms a stronger electromagnetic force field, and causes a stronger fluid flow in the weld pool. Secondly, during double-sided GTAW process, when the weld is partial penetrated, a heat-congregated zone forms between the bottoms of the two weld pools, where the temperature can increase quickly even though only a small amount of heat is input. Thirdly, the buoyancy force causes an inward flow in the bottom weld pool, which can drive the hot liquid on the surface to the bottom of the pool. 展开更多
关键词 ALUMINUM alloy double-sided GTAW PROCESS WELD PENETRATION numerical simulation
下载PDF
Characteristic studies on positive and negative streamers of double-sided pulsed surface dielectric barrier discharge
12
作者 Yan JIANG Bangfa PENG +4 位作者 Zhengyan LIU Nan JIANG Na LU Kefeng SHANG Jie LI 《Plasma Science and Technology》 SCIE EI CAS CSCD 2022年第4期37-52,共16页
The mechanisms of streamer generation and propagation in double-sided pulsed surface dielectric barrier discharge(SDBD)on both sides have been analyzed and investigated by experiment and numerical simulation.The fully... The mechanisms of streamer generation and propagation in double-sided pulsed surface dielectric barrier discharge(SDBD)on both sides have been analyzed and investigated by experiment and numerical simulation.The fully exposed asymmetric SDBD has two discharge processes located on the high voltage electrode(HVE)side and the ground electrode(GE)side.Discharge images of the HVE side and GE side are taken by a digital camera under continuous pulse and ICCD(Intensified Charge Coupled Device)is utilized to diagnose the generation and propagation of streamers in single pulse discharge.In order to understand the physical mechanisms of streamer evolution more deeply,we establish a 2D simulation model and analyze it from the aspects of electron density,ion density,reduced electric field and electron impact ionization source term.The results show that the primary and secondary discharges on the HVE side and the GE side of the double-sided SDBD are composed of positive streamer and negative streamer,respectively.On the HVE side,the accumulation of positive charges on the dielectric surface causes the direction of the electric field to reverse,which is the principal factor for the polarity reversal of the streamer.On the GE side,both the negative charges accumulated on the dielectric surface and the falling voltage are the key factors for the streamer polarity switch. 展开更多
关键词 double-sided SDBD positive streamer negative streamer nanosecond pulse
下载PDF
Effect of arc distance on temperature field and weld shape during double-sided arc welding
13
作者 张广军 张华军 +1 位作者 高洪明 吴林 《China Welding》 EI CAS 2009年第1期23-28,共6页
A new high efficiency welding method, double-sided double arc welding with double powers (DSAW-D), is developed for thick plate of low alloy high strength steel in this study. It is well known that the thermal cycle... A new high efficiency welding method, double-sided double arc welding with double powers (DSAW-D), is developed for thick plate of low alloy high strength steel in this study. It is well known that the thermal cycles have an important influence on the microstructure, shape, stress, distortion and mechanical property. The DSA W-D method can control the temperature field on a wide range by regulating the distance between two arcs, improve the microstructure and prevent hot and cold cracking of high strength steel. But at present, the effect of arc distance on the temperature field and shape is not clear. Therefore, the paper researches the effect of arc distance on the temperature field and weld pool during DSAW-D using finite element method. The transient temperature field of different arc distance in DSAW-D is calculated. To verify the numerical results, the temperature is measured by the thermo-couple and the calculated results agree approximately with experimental data. Farther, the thermal property and mutual effect of double-sided arcs are investigated. The temperature distributions and weld pool profile at different arc distances are obtained. The results show that arc distance is a very important factor to affect the heat process. 展开更多
关键词 double-sided arc welding temperature field weld pool numerical simulation arc distance
下载PDF
Microstructure of stainless steel weld in double-sided arc welding
14
作者 董红刚 王兵 +2 位作者 杨丽群 高洪明 吴林 《China Welding》 EI CAS 2010年第2期6-11,共6页
Double-sided arc welding with a single power source can effectively increase the weld penetration, diminish distortion, improve welding speed and save energy. Compared to conventional arc welding processes, double-sid... Double-sided arc welding with a single power source can effectively increase the weld penetration, diminish distortion, improve welding speed and save energy. Compared to conventional arc welding processes, double-sided arc welding can generate a penetrating electromaguetic field to help to form fine dendritic microstrueture in the weld due to the symmetry of heating. Type 1Cr1SNi9Ti aastenitic stainless steel was bead-on-plate welded with double-sided arc welding and conventional plasma arc welding processes, respectively, and microstructure in the weld, heat-affected zone and base metal were examined. After analyzing the black carbon-enriched band in the weld during plasma arc welding with electron probe microanalyzer ( EPMA ) and X-ray diffraction (XRD) technology, it was found that the black band was shaped from the aggregation of ferrite in the fasion boundary. Hardness measurement showed that this black band does not apparently affect the microhardncss distribution in the weld. 展开更多
关键词 double-sided arc welding stainless steel MICROSTRUCTURE carbon-enriched band
下载PDF
Microstructures and hardness of flat-overhead weld of the high strength steel thick plate using double-sided arc welding
15
作者 李大用 易晓丹 张广军 《China Welding》 EI CAS 2015年第4期33-38,共6页
High strength steel thick plate is widely used in shipbuilding, pressure vessels, etc. , the balance between weld quality and welding efficiency is becoming a research focus. In this paper, double-sided double arc fia... High strength steel thick plate is widely used in shipbuilding, pressure vessels, etc. , the balance between weld quality and welding efficiency is becoming a research focus. In this paper, double-sided double arc fiat-overhead welding experiments for high strength steel thick plate were conducted. Microstructures of weld have been observed through optical microscope (OM) and scanning electron microscope (SEM). Transformation of microstructures under thermal cycles of multi peaks was analyzed. Macro and micro hardness were also tested. The results show that the heat-affected zone (HAZ) near the fusion line experiences thermal cycles up to three times. The microstructures there are the most complex, including coarse lath martensite in original coarse-grained zone, and net-like structure along grain boundaries in critical reheat coarse-grained zone. After several times of tempering for bucking welding, the features of acicula and lath are weakened. Its microstructure approaches to the microstructure of base metal which is tempering sorbite. The hardness test shows that the maximum hardness occurs at critical reheat coarse-grained zone, the hardness of reticulation structure at grain boundary can be up to 450 HV. 展开更多
关键词 net-like microstructure thermal cycle double-sided arc welding high-strength steel
下载PDF
The Line Shape of Double-Sided Tooth-Disk Waveguide Filters Based on Plasmon-Induced Transparency
16
作者 张新元 王鲁橹 +6 位作者 陈召 崔鲁娜 尚策 赵玉芳 段高燕 刘尖斌 于丽 《Chinese Physics Letters》 SCIE CAS CSCD 2015年第5期82-85,共4页
We numerically investigate a coupled-resonator structure consisting of a stub resonator and a nanodisk resonator using a two-dimensional finite element method. Simulation results show that plasmon-induced transparency... We numerically investigate a coupled-resonator structure consisting of a stub resonator and a nanodisk resonator using a two-dimensional finite element method. Simulation results show that plasmon-induced transparency (PIT) occurs in the transmission spectra, and the sharp asymmetric Fano lines increase the sensitivity to 1.4 ×10^3 nm/RIU. We also analyze the properties of the structure with different radii of the nanodisk and the length of the tooth cavity. Moreover, we find that the PIP only happens when the staggered system is around a fixed location with different separate distances, which is not similar to the previous researches. Our model may be important to photonic-integrated circuits and the sensitivity in sensors. 展开更多
关键词 LENGTH The Line Shape of double-sided Tooth-Disk Waveguide Filters Based on Plasmon-Induced Transparency
原文传递
The Multi-Objective Optimization of AFPM Generators with Double-Sided Internal Stator Structures for Vertical Axis Wind Turbines
17
作者 Dandan Song Lianjun Zhou +2 位作者 Ziqi Peng Senhua Luo Jun Zhu 《Energy Engineering》 EI 2021年第5期1439-1452,共14页
The axial flux permanent magnet(AFPM)generator with double-sided internal stator structure is highly suitable for vertical axis wind turbines due to its high power density.The performance of the AFPM generator with do... The axial flux permanent magnet(AFPM)generator with double-sided internal stator structure is highly suitable for vertical axis wind turbines due to its high power density.The performance of the AFPM generator with double-sided internal stator structure can be improved by the reasonable design of electromagnetic parameters.To further improve the overall performance of the AFPM generator with double-sided internal stator structure,multivariable(coil widthω_(c),permanent magnet thickness h,pole arc coefficient α_(p) and working air gap l_(g))and multi-objective(generator efficiencyη,total harmonic distortion of the voltage THD and induced electromotive force amplitude EMF)functional relationships are innovatively established.Orthogonal analysis,mean analysis and variance analysis are performed on the influence parameters by combining the Taguchi method and response surface methodology to study the influence degrees of each influence parameter on the optimization objectives to determine the most appropriate electromagnetic parameters.The optimization results are verified by 3D finite element analysis.The optimized APFM generator with double-sided internal stator structure exhibits superior economy,stronger magnetic density,higher efficiency and improved power quality. 展开更多
关键词 Wind turbine double-sided internal stator structure multi-objective optimization axial flux permanent magnet generator
下载PDF
Preparation of Double-sided Nanostructure Based on Soft-nanoimprinting Lithography
18
作者 Man Zhang Qiling Deng +2 位作者 Hui Pang Lifang Shi Axiu Cao 《Journal of Microelectronic Manufacturing》 2018年第2期1-5,共5页
Double-sided nanostructure has more excellent properties in high efficiency,high yield,and high capability devices,which becomes the attention spots in nanofabrication technology.We proposed a very simple method to fa... Double-sided nanostructure has more excellent properties in high efficiency,high yield,and high capability devices,which becomes the attention spots in nanofabrication technology.We proposed a very simple method to fabricate the double-sided nanostructure on polymer elastic substrate.By using twice soft-nanoimprinting process,the same or different nanostructures array was fabricated onto the elastomeric slab substrate.In this paper,we fabricated double-sided nanopillars array with different diameters of 200nm and 350nm.In order to expand the applications field in optical and electronic devices,metal layer could be deposited onto the substrate before imprinting nanostructure. 展开更多
关键词 double-sided NANOSTRUCTURE ELASTIC SUBSTRATE soft-nanoimprinting LITHOGRAPHY metal layer
下载PDF
An Adjustable Double-sided Bending Mechanism
19
作者 NG Jinliang JIANG Yu +1 位作者 MENG Kai WANG Ligang 《International Journal of Plant Engineering and Management》 2020年第2期98-116,共19页
For the current bending industry needs to achieve bending different thickness,different specifications and double-sided bending production,an automatic adjustable double-sided bending method is proposed.The main steps... For the current bending industry needs to achieve bending different thickness,different specifications and double-sided bending production,an automatic adjustable double-sided bending method is proposed.The main steps of this method are as follows:First,the structure model is established according to the bending process requirements;Then,the PLC control system and the robot system are developed;Finally,the digital bending programming of the man-machine interface is carried out.It is proved by practices that the double-sided bending mechanism,control system and robot system are applied to the bending system which improves the bending forming quality,forming precision and processing efficiency.It promotes the rapid development of bending industry and the application prospect is very broad. 展开更多
关键词 PLC controller touch screen double-sided bending digital bending program robot system
下载PDF
Preparation of 3 Inch Double-Sided YBa_2Cu_3O_(7-X) High Temperature Superconducting Thin Films
20
作者 TAOBo-wan 《Journal of Electronic Science and Technology of China》 2005年第2期190-191,共2页
关键词 YBCO double-sided thin films epitaxial growth HOMOGENEITY
下载PDF
上一页 1 2 3 下一页 到第
使用帮助 返回顶部