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纳米技术与精密工程（英文）
纳米技术与精密工程（英文）

胡小唐

双月刊

1672-6030

namijishu@tju.edu.cn

022-27892181

300072

天津市南开区卫津路92号

纳米技术与精密工程（英文）/Journal Nanotechnology and Precision EngineeringCSCD北大核心CSTPCDEI
查看更多>>本刊是纳米技术与精密工程领域专业性学术期刊,主要刊登纳米技术、微机电系统、精密加工和精密测量方面用中、英文撰写的具有创造性的科学研究论文、研究报告以及重要学术问题讨论和综述等.办刊宗旨在于反映国内外该领域及相关领域的重要科学研究成果,促进学术交流和科学技术发展.读者对象为国内外理工科高等院校师生、科研人员和广大工程技术工作者.欢迎国内外作者踊跃投稿.本刊为美国《工程索引》EI和中国科技论文统计源（中国科技核心期刊）收录期刊。
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    A study of a slim compact piezo inertia actuator

    Pingping SunHaozhen ZhangHuan Yu
    1-9页
    查看更多>>摘要：Most previously reported inertia actuators suffer from the problems of low speed and large size.To overcome these shortcomings,this study proposes a slim compact piezo inertia actuator based on the principle of stick-slip drive.Actuated by the transverse motion of a cantilever beam forming part of a monolithic elastomer,this actuator achieves a high velocity.The construction and basic operating principle of the actuator are discussed in detail.Commercial finite element analysis software is employed to determine the appropriate geometry for the mono-lithic elastomer.To study the actuator's mechanical characteristics,a prototype is fabricated and a series of experimental tests are performed.According to the results of these tests,the maximum velocity and maximum load force are about 24.03 mm/s and 1.96 N,respectively,and the minimum step size is about 0.47 μm.It is shown that the inertia actuator based on a monolithic elastomer with a cantilever beam not only has a slim compact structure,but also exhibits good output characteristics.
      原文链接:
    • 万方数据
    • 维普

    Exploration and mitigation of protrusion behavior in Ga-ion doped h-BN memristors

    Mucun LiEnxiu WuLinyan XuXiaodong Hu...
    10-17页
    查看更多>>摘要：Using hexagonal boron nitride(h-BN)to prepare resistive switching devices is a promising strategy.Various doping methods have aroused great interest in the semiconductor field in recent years,but many researchers have overlooked the various repetitive anomalies that occur during the testing process.In this study,the basic electrical properties and additive protrusion behavior of Ga-ion-doped h-BN memristors at micro-nanoscale during the voltage scanning process are investigated via atomic force microscopy(AFM)and energy dispersive spectroscopy.The additive protrusion behavior is subjected to exploratory research,and it is concluded that it is caused by anodic oxidation.An approach is proposed that involves filling the AFM chamber with nitrogen gas to improve the stability of memristor testing,and this method provides a solution for enhanced testing stability of memristors.
      原文链接:
    • 万方数据
    • 维普

    Effects of laser energy on the surface quality and properties of electrodeposited zinc-nickel-molybdenum coatings

    Tao NiZhaoyang ZhangYucheng WuShuai Yang...
    18-26页
    查看更多>>摘要：As a substitute for toxic cadmium coatings in the aerospace industry,zinc-nickel coatings have excellent application prospects,and their properties can be improved by adding molybdenum.In this study,laser-assisted electrodeposition is used to improve the surface quality and properties of Zn-Ni-Mo coatings,with investigation of how laser energy in the range of 0-21.1 μJ affects their element content,surface morphology,crystal phase,microhardness,residual internal stress,and corrosion resistance.The laser irradiation accelerates the electrodepo-sition,refines the grain size,improves the hydrogen adsorption,and reduces the residual tensile stress,and a laser energy of 15.4 μJ gives the highest Ni and Mo contents and the lowest Zn content,as well as the optimum surface morphology,microhardness,residual internal stress,and corrosion resistance of the coating.
      原文链接:
    • 万方数据
    • 维普

    An optical tweezer-based microdroplet imaging technology

    Cong ZhaiYujian HongZuzeng LinYulu Chen...
    27-33页
    查看更多>>摘要：Microspheres can break the diffraction limit and magnify nano-structure imaging,and with its advantages of low cost and label-free operation,microsphere-assisted imaging has become an irreplaceable tool in the life sciences and for precision measurements.However,the tiny size and limited imaging field of traditional solid microspheres cause difficulties when imaging large sample areas.Alternatively,droplets have similar properties to those of microspheres,with large surface curvature and refractive-index difference from the surrounding environment,and they can also serve as lenses to focus light for observation and imaging.Previous work has shown that droplets with controllable size can be generated using an optical tweezer system and can be driven by optical traps to move precisely like solid microspheres.Here,a novel microdroplet-assisted imaging technology based on optical tweezers is proposed that better integrates the generation,manipulation,and utilization of droplets.
      原文链接:
    • 万方数据
    • 维普

    Oxidation mechanism of high-volume fraction SiCp/Al composite under laser irradiation and subsequent machining

    Hanliang LiuGuolong ZhaoZhiwen NianZhipeng Huang...
    34-47页
    查看更多>>摘要：Conventional mechanical machining of a composite material comprising an aluminum matrix reinforced with a high volume fraction of SiC particles(hereinafter referred to as an SiCp/Al composite)faces problems such as rapid tool wear,high specific cutting force,and poor surface integrity.Instead,a promising method for solving these problems is laser-induced oxidation-assisted milling(LOAM):under laser irradiation,the local workpiece material reacts with oxygen,thus forming loose and porous oxides that are easily removed.In the present work,the oxidation mechanism of SiCp/Al irradiated by a nanosecond pulsed laser is studied to better understand the laser-induced oxidation behavior and control the characteristics of the oxides,with laser irradiation experiments performed on a 65％SiCp/Al composite with various laser parameters and auxiliary gases(oxygen,nitrogen,and argon).With increasing laser pulse energy density,both the ablated groove depth and the width of the heat-affected zone increase.When oxygen is used as the auxiliary gas,an oxide layer composed of SiO2 and Al2O3 forms,and CO2 is produced and escapes from the material,thereby forming pores in the oxides.However,when nitrogen or argon is used as the auxiliary gas,a recast layer is produced that is relatively difficult to remove.Under laser irradiation,the sputtered material reacts with oxygen to form oxides on both sides of the ablated groove,and as the laser scanning path advances,the produced oxides accumulate to form an oxide layer.LOAM and conventional milling are compared using the same milling parameters,and LOAM is found to be better for reduced milling force and tool wear and improved machined surface quality.
      原文链接:
    • 万方数据
    • 维普

    Characteristics of the pressure profile in the accelerator on the RF negative ion source at ASIPP

    Mingshan WuLuxiang XuYanbo ZhouLizhen Liang...
    48-54页
    查看更多>>摘要：Neutral beam injection(NBI)systems based on negative hydrogen ion sources—rather than the positive ion sources that have typically been used to date—will be used in the future magnetically confined nuclear fusion experiments to heat the plasma.The collisions between the fast negative ions and neutral background gas result in a significant number of high-energy positive ions being produced in the acceleration area,and for the high-power long-pulse operation of NBI systems,this acceleration of positive ions back to the ion source creates heat load and material sputtering on the source backplate.This difficulty cannot be ignored,with the neutral gas density in the acceleration region having a significant impact on the flux density of the backstreaming positive ions.In the work reported here,the pressure gradient in the acceleration region was estimated using an ionization gauge and a straightforward 1D computation,and it was found that once gas traveled through the acceleration region,the pressure dropped by nearly one order of magnitude,with the largest pressure drop occurring at the plasma grid.The computation also revealed that the pressure drop in the grid gaps was substantially smaller than that in the grid apertures.
      原文链接:
    • 万方数据
    • 维普

    Droplet microfluidic chip for precise monitoring of dynamic solution changes

    Cong MaZehang GaoJianlong ZhaoShilun Feng...
    55-63页
    查看更多>>摘要：In this work,an automated microfluidic chip that uses negative pressure to sample and analyze solutions with high temporal resolution was developed.The chip has a T-shaped channel for mixing the sample with a fluorescent indicator,a flow-focusing channel for generat-ing droplets in oil,and a long storage channel for incubating and detecting the droplets.By monitoring the fluorescence intensity of the droplets,the device could detect changes in solution accurately over time.The chip can generate droplets at frequencies of up to 42 Hz with a mixing ratio of 1∶1 and a temporal resolution of 3-6 s.It had excellent linearity in detecting fluorescein solution in the concentration range 1-5 μM.This droplet microfluidic chip provides several advantages over traditional methods,including high temporal resolution,stable droplet generation,and faster flow rates.This approach could be applied to monitoring calcium ions with a dynamic range from 102 to 107 nM and a detection limit of 10 nM.
      原文链接:
    • 万方数据
    • 维普

    Research trends in methods for controlling macro-micro motion platforms

    Lufan ZhangPengqi ZhangBoshi JiangHeng Yan...
    64-78页
    查看更多>>摘要：With ongoing economic,scientific,and technological developments,the electronic devices used in daily lives are developing toward precision and miniaturization,and so the demand for high-precision manufacturing machinery is expanding.The most important piece of equipment in modern high-precision manufacturing is the macro-micro motion platform(M3P),which offers high speed,precision,and efficiency and has macro-micro motion coupling characteristics due to its mechanical design and composition of its driving components.Therefore,the design of the control system is crucial for the overall precision of the platform;conventional proportional-integral-derivative control cannot meet the system requirements,and so M3Ps are the subject of a growing range of modern control strategies.This paper begins by describing the development history of M3Ps,followed by their platform structure and motion control system components,and then in-depth assessments of the macro,micro,and macro-micro control systems.In addition to examining the advantages and disadvantages of current macro-micro motion control,recent technological breakthroughs are noted.Finally,based on existing problems,future directions for M3P control systems are given,and the present conclusions offer guidelines for future work on M3Ps.
      原文链接:
    • 万方数据
    • 维普

    Status of research on non-conventional technology assisted single-point diamond turning

    Zhuang ChenGuangjun ChenZhiwei YuJiashuai Huang...
    79-92页
    查看更多>>摘要：With the increasing use of difficult-to-machine materials in aerospace applications,machining requirements are becoming ever more rig-orous.However,traditional single-point diamond turning(SPDT)can cause surface damage and tool wear.Thus,it is difficult for SPDT to meet the processing requirements,and it has significant limitations.Research indicates that supplementing SPDT with unconventional tech-niques can,importantly,solve problems due to the high cutting forces and poor surface quality for difficult-to-machine materials.This paper first introduces SPDT and reviews research into unconventional techniques for use with SPDT.The machining mechanism is discussed,and the main advantages and disadvantages of various methods are investigated.Second,hybrid SPDT is briefly described,which encompasses ultrasonic-vibration magnetic-field SPDT,ultrasonic-vibration laser SPDT,and ultrasonic-vibration cold-plasma SPDT.Compared with the traditional SPDT method,hybrid SPDT produces a better optical surface quality.The current status of research into unconventional tech-niques to supplement SPDT is then summarized.Finally,future development trends and the application prospects of unconventional assisted SPDT are discussed.
      原文链接:
    • 万方数据
    • 维普