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2018 IEEE International Conference on Manipulation, Manufacturing and Measurement on the Nanoscale (3M-NANO)最新文献

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Determination of Optimal Curing Conditions for Imaging Single Lung Cancer Cells by Atomic Force Acoustic Microscope 原子力声显微镜成像单个肺癌细胞最佳固化条件的确定
Xuan Wang, Yujing Zhao, Wenxiao Zhang, Ying Wang, Liguo Tian, Xinyue Wang, Zhengxun Song, Zuobin Wang, Dayou Li
This paper presents a method for the determination of optimal curing conditions for the imaging of single lung cancer cells by atomic force acoustic microscope (AFAM). The cellular morphology, height and surface roughness of the cells treated with different concentrations of paraformaldehyde and methanol and durations were observed using an AFAM. The experimental results showed that the A549 cells solidified with 4% paraformaldehyde for the period from 30min to 60min were close to the profiles of living cells. The cells solidified with 4% paraformaldehyde for 10min were beneficial to obtain subsurface structures.
本文提出了原子力声显微镜(AFAM)对单个肺癌细胞成像最佳固化条件的确定方法。用AFAM观察不同浓度的多聚甲醛和甲醇处理细胞的细胞形态、高度和表面粗糙度以及持续时间。实验结果表明,4%多聚甲醛固化30min ~ 60min后的A549细胞与活细胞形态接近。4%多聚甲醛固化10min有利于细胞获得亚表面结构。
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引用次数: 1
Study on Surface Integrity of Mn-Zn Ferrite in Ultraprecision Machining 锰锌铁氧体在超精密加工中的表面完整性研究
Bingge Li, Huadong Yu, Jinkai Xu, Yiquan Li, Zhanjiang Yu, Qimeng Liu, Zhongxu Lian
This paper primarily analyzed the mechanism of crack propagation in brittle materials micro-grinding, and obtained the empirical formula of the maximum unreformed thickness. Using the grinding rods with diameters of 0.7mm and 1.0mm, the single-factor experiments were carried out, through changing spindle speed, feed speed and depth of cut. We selected different processing parameters to study the general rules that the processing parameters affect the surface quality. The results show that the grinding depth has the most obvious influence on the surface quality, and the surface quality is the best when the grinding depth is 5 μm. The feed speed affects the surface quality secondarily, and the better surface quality can be obtained at 50 mm/min. The effect of spindle speed on surface quality is not obvious, but with the increase of spindle speed, the surface quality first increases and then decreases. We compare the different processing methods in order to study the effect of different processing methods on the surface quality. It can be concluded that in the case of smaller depth of cut, micro- grinding is easier to obtain high-quality machined surface than micro-milling
本文初步分析了脆性材料微磨削裂纹扩展机理,得到了最大未变形厚度的经验公式。采用直径为0.7mm和1.0mm的磨棒,通过改变主轴转速、进给速度和切削深度进行单因素实验。选择不同的加工参数,研究加工参数对表面质量影响的一般规律。结果表明:磨削深度对表面质量的影响最为明显,当磨削深度为5 μm时,表面质量最佳;进给速度对表面质量有二次影响,在50 mm/min时,表面质量较好。主轴转速对表面质量的影响不明显,但随着主轴转速的增加,表面质量先增大后减小。通过对不同加工方法的比较,研究不同加工方法对表面质量的影响。结果表明,在切削深度较小的情况下,微磨比微铣更容易获得高质量的加工表面
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引用次数: 0
Development of a Metal Micro-droplet Ejecting Equipment for Manipulation Jetting Trajectory 操纵喷射轨迹的金属微液滴喷射装置的研制
J. Haung, Jun Luo, Kang Zhang, Junxing Cui, Hao Yi, L. Qi
It is still a challenge to directly study the physical simulation of in-space uniform metal micro-droplet 3D printing on ground, because the gravity contributes to an additional velocity component, which significantly affects the spreading and deposition dynamics of the droplet. To this end, a horizontal ejecting apparatus was developed to spray uniform metal micro-droplets. Meanwhile, based on the electrostatic induction theory, the droplet was charged using a charging electric field. As a result, the deflection flying of the droplet was achieved due to the equilibrium between the droplet gravity and the electric field force. This investigation provides a foundation for the study of metal droplet-based 3D printing in space.
在地面上直接研究空间均匀金属微液滴3D打印的物理模拟仍然是一个挑战,因为重力会产生额外的速度分量,这对液滴的扩散和沉积动力学有很大的影响。为此,研制了一种水平喷射装置来喷射均匀的金属微液滴。同时,根据静电感应原理,利用带电电场对液滴进行充电。由于液滴重力与电场力之间的平衡,实现了液滴的偏转飞行。本研究为基于金属液滴的空间3D打印技术的研究奠定了基础。
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引用次数: 1
Development of a Compact XYZ Nanopositioner Supporting Optical Scanning 支持光学扫描的紧凑XYZ纳米对位器的开发
Yue Wang, Peng Yan
In this paper we consider the design, analysis and experimental validations of an XYZ PZT driven nano-positioning stage to support high precision optical scanning systems. The overall motion stage consists of a parallel XY-nanopositioner and a Z-axis nanopositioner mounted in series on the XY stage. To achieve fast and high precision motions with loads from the optical systems, a novel hollow structural design is proposed, where the flexure based mechanism is further optimized to increase the output displacement while ensuring a relatively high natural frequency. Then the static model of the stage is developed for the lever and guiding mechanisms and its accuracy is verified by FEA(Finite Element Analysis). The proposed 3-DOF(Degree of Freedom) nanopositioner is manufactured and experimentally investigated. Experimental tests show that the nanopositioner has natural frequencies of 855 Hz, 865 Hz and 1019 Hz for X, Y and Z axes, respectively. Meanwhile the maximum travel ranges of 71 μm, 71 μm and 52 μm are obtained along x, y and z directions, which demonstrate large strokes and relatively high natural frequencies for the 3-DOF optical nanopositioner.
在本文中,我们考虑了XYZ PZT驱动的纳米定位平台的设计,分析和实验验证,以支持高精度光学扫描系统。整个运动平台由一个平行的x -轴纳米对姿器和一个串联安装在XY平台上的z -轴纳米对姿器组成。为了在光学系统载荷下实现快速、高精度的运动,提出了一种新颖的中空结构设计,其中对基于柔性的机构进行了进一步优化,以增加输出位移,同时保证相对较高的固有频率。在此基础上,建立了连杆机构和导向机构的台架静态模型,并通过有限元分析验证了模型的准确性。制备了该三自由度纳米反位剂并进行了实验研究。实验结果表明,该纳米电磁铁在X、Y和Z轴上的固有频率分别为855 Hz、865 Hz和1019 Hz。在x、y和z方向上的最大行程分别为71 μm、71 μm和52 μm,表明该三自由度光学纳米对位器具有较大的行程和较高的固有频率。
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引用次数: 3
Hybrid Core-shell Particles for Metabolite Detection by Laser Desorption/ionization Mass Spectrometry 混合核壳粒子用于代谢物激光解吸/电离质谱检测
M. Rana, C. Rejeeth, V. Vedarethinam, Lin Huang, Ru Zhang, D. Gurav, Kun Qian
Metal oxide coated silica core-shell particles were utilized for the analysis of low-molecular weight metabolites using laser desorption/ionization mass spectrometry (LDI MS). The use of metal oxide-silica coating (SiO2-NH2@MO2) as a matrix avoided the fragmentation of analytes and provided good reproducibility and high salt tolerance, highlighting the potential matrix efficiency for bio sample analysis. This work not only opens a new field for hybrid metal oxide materials for LDI MS application, but also offers a sensitive and accurate biomarker detection approach in the growing field of metabolomics for disease diagnostics.
采用激光解吸/电离质谱法(LDI MS)对金属氧化物包覆二氧化硅核壳颗粒进行低分子量代谢物分析。使用金属氧化物-二氧化硅涂层(SiO2-NH2@MO2)作为基质避免了分析物的破碎,具有良好的再现性和高耐盐性,突出了生物样品分析的潜在基质效率。这项工作不仅为杂化金属氧化物材料的LDI质谱应用开辟了新的领域,也为日益发展的代谢组学疾病诊断领域提供了一种灵敏、准确的生物标志物检测方法。
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引用次数: 0
Effects of Composition on Photoluminescence Properties of Organometal Halide Perovskites Quantum Dots 组成对有机金属卤化物钙钛矿量子点光致发光性能的影响
Pengfei Wang, Jinhua Li, Yue Wang, Ke Feng, X. Chu, Yingjiao Zhai, P. Zou, W. Fang, F. Jin
Organometal halide perovskites material have recently emerged have shown great potential in photovoltaic and light emitting application. As an emerging nanomaterial, perovskite quantum dots have high fluorescence quantum yield, narrow half-peak width and fluorescence wavelength which can cover the whole visible region. Organometal halide perovskites quantum dots are one of the typical quantum dots, quantum dots have large exciton binding energy, quantum confinement effect, and therefore has a high fluorescence quantum yield. Because of its robust quantum size effect, regulate the size of quantum dots can achieve its performance adjustment. In this paper, the size of the perovskite quantum dots was adjusted by changing the composition and ratio of the halogen, thereby changing the forbidden bandwidth of the quantum dots to achieve the control of the emission wavelength. In this way, we study the optical properties of organometal halide perovskites quantum dots and understanding the quantum size effects of perovskite quantum dots and the ability to turn their size.
近年来出现的有机金属卤化物钙钛矿材料在光伏和发光方面显示出巨大的应用潜力。钙钛矿量子点作为一种新兴的纳米材料,具有荧光量子产率高、半峰宽度窄、荧光波长可覆盖整个可见光区域等特点。有机金属卤化物钙钛矿量子点是典型的量子点之一,量子点具有较大的激子结合能、量子约束效应,因此具有较高的荧光量子产率。由于量子点具有强大的量子尺寸效应,调节量子点的尺寸可以实现其性能的调节。本文通过改变卤素的组成和比例来调节钙钛矿量子点的尺寸,从而改变量子点的禁带带宽,实现对发射波长的控制。通过这种方式,我们研究了有机金属卤化物钙钛矿量子点的光学性质,了解了钙钛矿量子点的量子尺寸效应和改变其尺寸的能力。
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引用次数: 0
Development and Experiment of a Novel Vibration-assisted Cutting Apparatus 一种新型振动辅助切割装置的研制与实验
Wanfei Ren, Jinkai Xu, Zhongxu Lian, Huadong Yu, Wanfei Ren, Jieqiong Lin
Vibration-assisted cutting as one of specially typical precision non-conventional machining methods, recently, has aroused lots of scholars and science researchers interests, especially in hard and brittle material cutting with a significant challenge. The objective of present study develops a novel apparatus which combines mechanical and control design, a series of cutting experiments conducted on Al 7075 alloy that defined as one of high strength alloy materials appliance in lots of industries field to investigate the feasibility and reliability of the appliance. In present paper, a mechanical model of vibration- assisted cutting apparatus was designed and than evaluated by off-line test analysis. The novel apparatus can work at below 124 Hz with maximum stroke 27.285µm. Fuzzy PID was preliminary introduced into vibration-assisted cutting apparatus control strategy. Programs were established based on LabVIEW software and then downloaded into NI Compact 9033 controller in order to control vibration-assisted cutting apparatus. By compared with three strategies each other, the tracking error of fuzzy strategy increased 11.2 times that of fuzzy PID, at the same time, PID strategy oscillation amplitude increased 5.3 times that of fuzzy PID. A series of cutting experiments were conducted on the plane and freeform surface deforming. The validity and availability of vibration-assisted cutting apparatus were conducted in experiments.
振动辅助切削作为一种特别典型的精密非常规加工方法,近年来引起了众多学者和科研人员的兴趣,特别是对硬脆材料的切削加工提出了重大挑战。本研究的目的是开发一种机械与控制设计相结合的新型切削装置,并对工业领域中公认的高强度合金材料刀具之一的Al 7075合金进行了一系列的切削实验,以考察该刀具的可行性和可靠性。本文设计了振动辅助切削装置的力学模型,并通过离线试验分析对其进行了评价。该装置工作频率低于124 Hz,最大行程为27.285µm。将模糊PID初步引入振动辅助切削装置的控制策略中。基于LabVIEW软件编制程序,下载到NI Compact 9033控制器中,实现对振动辅助切割装置的控制。三种策略相互比较,模糊策略的跟踪误差比模糊PID增加11.2倍,同时PID策略的振荡幅度比模糊PID增加5.3倍。对平面变形和自由曲面变形进行了一系列的切削实验。实验验证了振动辅助切割装置的有效性和有效性。
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引用次数: 0
Application of Adaptive Federated Filter Based on Innovation Covariance in Underwater Integrated Navigation System 基于创新协方差的自适应联邦滤波器在水下组合导航系统中的应用
Xiaoshuang Ma, Tongwei Zhang, Xixiang Liu
For the underwater integrated navigation system composed of multiple navigation sensors, the uncertainty of measurement noise has a direct impact on the performance of standard Kalman filtering algorithm for each local filter, which results in the performance degradation of entire federated filter or even abnormal use. Based on the hypothesis of standard Kalman filter, an adaptive federated filtering method based on innovation covariance is proposed to improve the adaptive ability of the whole system in this paper. First, the popular real-time estimation of innovation covariance is derived in according to maximum likelihood estimation (MLE) criterion. Then, a scaling factor is introduced in each local filter to modify the filter gain directly under uncertain measurement noise. The simulation and analysis of the proposed algorithm mapplied in SINS/DVL/TAN/MCP underwater integrated navigation system, verify its validity and robustness in the presence of measurement noise uncertainty. A comparison to traditional federated Kalman filtering method demonstrates that our method provides a considerably improved accuracy and performance.
对于由多个导航传感器组成的水下组合导航系统,测量噪声的不确定性直接影响到各个局部滤波器的标准卡尔曼滤波算法的性能,从而导致整个联邦滤波器的性能下降甚至使用异常。本文在标准卡尔曼滤波假设的基础上,提出了一种基于创新协方差的自适应联邦滤波方法,以提高整个系统的自适应能力。首先,根据极大似然估计(MLE)准则推导出当前流行的创新协方差实时估计。然后,在每个局部滤波器中引入比例因子,在不确定测量噪声下直接修改滤波器增益。将该算法应用于SINS/DVL/TAN/MCP水下组合导航系统进行仿真分析,验证了该算法在测量噪声不确定情况下的有效性和鲁棒性。与传统的联邦卡尔曼滤波方法相比,我们的方法在精度和性能上都有很大的提高。
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引用次数: 3
Exploring Plasmonic Logic Gates Based on PIT Effect 基于PIT效应的等离子体逻辑门研究
Yun Wang, Yiyuan Xie
A novel multi-functional logic device based on plas-monic induced transparency (PIT) effect is proposed. It consists of a pair of parallel metal-insulator-metal (MIM) waveguides and two identical hexagonal resonators in which a rotatable ellipse is embedded respectively. In the device, four logic functions: AND, NAND, NOR and NOT can be achieved through changing the rotatation angle of the ellipses. In addition, AND, NAND, and NOR can be operated simultaneously with higher output contrast ratios. This design can not only improve the integration of the chip, but also increase the speed of the logic computing. Therefore, this work supplies a potential application value for optical logic integrated circuits.
提出了一种基于等离子体诱导透明(PIT)效应的多功能逻辑器件。它由一对平行的金属-绝缘体-金属(MIM)波导和两个相同的六角形谐振器组成,其中分别嵌入了一个可旋转的椭圆。在器件中,通过改变椭圆的旋转角度,可以实现AND、NAND、NOR和NOT四种逻辑功能。此外,AND, NAND和NOR可以同时工作,输出对比度更高。这种设计不仅可以提高芯片的集成度,还可以提高逻辑计算的速度。因此,这项工作为光学逻辑集成电路提供了潜在的应用价值。
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引用次数: 0
Research on Physical Parameter Measurement System of Fiber Fabry-Perot Interferometer 光纤法布里-珀罗干涉仪物理参数测量系统研究
Yanjun Li, Wenqiu Wu
Fiber Fabry-Perot Interferometer (FFPI) is made of two well-cleaved fiber end faces with high-reflectivity, which is widely used in displacement sensing, pressure sensing, acoustic wave and ultrasonic detection. In this paper, we studied and verified the spectral relationship between the Interference spectrum and the fiber Fabry-Perot interferometer, in the case of gradual changing in physical parameters (Fabry cavity length), Furthermore, we used Matlab to fit the spectrum data, and analyzed the relationship between the physical parameters of the sensor and the spectral data from the optical spectrum analyzer (OSA). The actual cavity length was calculated from the measured data of the OSA. This fiber Fabry-Perot interferometer can be applied to the measurement of the length, displacement, and has a wide range of measurement applications due to its stability and durability.
光纤法布里-珀罗干涉仪(FFPI)是由两个具有高反射率的切割良好的光纤端面组成的干涉仪,广泛应用于位移传感、压力传感、声波和超声波检测等领域。本文研究并验证了光纤法布里-珀罗干涉仪在物理参数(法布里腔长度)逐渐变化的情况下,干涉光谱与光纤法布里-珀罗干涉仪的光谱关系,并利用Matlab对光谱数据进行拟合,分析了传感器物理参数与光谱分析仪(OSA)光谱数据之间的关系。根据OSA的测量数据计算出实际腔长。该光纤法布里-珀罗干涉仪可用于测量长度、位移,由于其稳定性和耐用性,具有广泛的测量应用。
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引用次数: 0
期刊
2018 IEEE International Conference on Manipulation, Manufacturing and Measurement on the Nanoscale (3M-NANO)
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