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20th Congress of the International Commission for Optics

作者： Yu Daoyin* Li Wanhui WangYi Chen Xiaodong College of Precision Instrument & Opto-electronics Engineering Tianjin University Key Laboratory of Opto-electronics Information and Technical Science (Tianjin University) Ministry of Education Tianjin Optical Society Tianjin 300072 China

Optical coherence tomography (OCT), which bases on the principle of low-coherence interferometry, is an emerging cross-sectional imaging technology. With ultrahigh resolution, OCT is sensitive enough

关键词： Endoscopic optical coherence tomography （EOCT） Spectral OCT Imaging high resolution

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Advanced Transmission Electron Microscopy Applications in Nano-Materials and Nano-Technology Developments

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Chemical Research in Chinese Universities 2001年第Z1期17卷 44-页

作者： KAI J.J. Department of Engineering and System Sciences/Center for Electron Microscopy National Tsing Hua University Hsinchu

Nano-technology development is nowadays a very hot topics in many research fields. Nano-materials are the foundations for developing this new technology. In order to fully understand the basic material science problems behind this topics, transmission electron microscopy (TEM) becomes the must and one of the most important technique to analyze the nano-size structure and composition using the most advanced high resolution TEM technique with nano-beam EDS and energy filter EELS to study the fine structures, crystallography, chemical composition, and optical properties of many different nano-materials in different industries applications.

关键词： optical properties of electron microscopy material science high resolution fine structures new technology

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一种新的用于最小化高分辨率熵相容格式数值耗散的TVD通量限制器

一种新的用于最小化高分辨率熵相容格式数值耗散的TVD通量限制器

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2016海峡两岸流体力学研讨会

作者：任炯王刚西北工业大学航空学院流体力学系

采用通量限制器控制一维熵相容格式的耗散项可以提高该格式对激波等间断解捕捉的分辨率,由此得到的格式称为高分辨率熵相容格式(简记为ECL格式)。由于不同的通量限制器对格式中耗散项的限制程度不同,导致不同限制器的高分辨率熵相容格... 详细信息

采用通量限制器控制一维熵相容格式的耗散项可以提高该格式对激波等间断解捕捉的分辨率,由此得到的格式称为高分辨率熵相容格式(简记为ECL格式)。由于不同的通量限制器对格式中耗散项的限制程度不同,导致不同限制器的高分辨率熵相容格式对间断捕捉的分辨率也不同。在不引起数值振荡或者保证通量限制器满足TVD条件的前提下,显然空间格式的数值耗散越少,其对间断位置的分辨率就越高。基于此思想,本文以总熵的数值耗散为参考,将Sweby提出的一类通量限制器分为迎风和对称两种形式插入熵相容格式,并做了大量的数值研究,最终发展出一类更一般化且满足二阶TVD条件的通量限制器,称之为Gsbee类限制器。针对该类限制器,有规律地比较了其中某些限制器对应的高分辨率熵相容格式引起的数值熵耗散的多少。在此基础上发现了一个新的通量限制器——最小耗散通量限制器(简记为MDF限制器),该限制器引起的数值耗散相对其它常用的通量限制器更少,且不会引起不稳定的数值振荡。针对该限制器的最小耗散性,本文给了相关的数学证明,并用更多典型的数值算例验证了其稳定性,有效性和对间断解的捕捉能力。

关键词： Hyperbolic conservation laws Entropy-consistent flux function high resolution GSbee limiters MDF limiter Second order TVD region ECL-MDFu scheme

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3D Display Systems Using Dual-layer LCD Panels

3D Display Systems Using Dual-layer LCD Panels

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2007亚洲显示国际会议

作者： Kunio Sakamoto Dept.of Mathematics and Computer Science Shimane University 1060 NishikawatsuMatsue CityShimane 690-8504Japan

＜正＞A display system that does not require viewers to wear special glasses to see 3D images is useful technology.Conven- tional 2-views parallax-barrier 3D display has disadvantages such that horizontal resolution is reduced by half because each eye only sees half the pixels.The authors developed a method to generate orthogonal polarized parallax images and a thin stereoscopic 3D display with a polarized parallax barrier.The advantage of the polarized parallax barrier is that the resolu- tion of presented parallax images is much greater than that possible with conventional displays.In this paper,we describe orthogonal polarized imaging technology and image separating technique by polarized slit barrier.

关键词： Orthogonal Polarized Imaging Polarized Slit 3D Display Parallax Barrier Dual-layer LCD Panels high resolution

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high precision single-molecule techniques for molecular biophysics

High precision single-molecule techniques for molecular biop...

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中国生物化学与分子生物学会第十二届全国会员代表大会暨2...

作者： Wenxia Lin Jianbing Ma Ming Li Ying Lu Institute of Physics Chinese Academy of Sciences

Single-molecule techniques have become an indispensable tool for studying the dynamics of bio-molecules and biomembranes.Here,we survey important recent development in this field of research and provide an outlook on future developments.To be concrete,we describe how to use magnetic tweezers(MT)and FRET techniques to catch the transient intermediates in the homologous recombination(HR)process,proving a deeper insight into molecular mechanism of HR.

关键词： high resolution FRET Helicase Step Dynamics

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低能电子光刻的蒙特卡罗模拟

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现代科学仪器 2006年第Z1期23卷 14-15页

作者：张增明肖沛陈套孙霞丁泽军中国科技大学天文与应用物理系合肥230026中国中国科技大学物理系合肥230026中国中国科技大学物理系合肥230026中国中国科技大学物理系合肥230026中国中国科技大学物理系合肥230026中国

　　Electron beam lithography(EBL)has been playing an important role in the fabrication of large-scale integrated semiconductor devices because of its high resolution.Although high-energy electrons are widely employed in the present EBL system,high-energy electrons can penetrate through the resist layer,lose most of their energies in the substrate and,thus,cause damage to the underlying substrate.……

关键词：低能电子光刻 semiconductor devices high resolution

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Angle glint suppression for millimeter-wave radar based on polarization faltering

Angle glint suppression for millimeter-wave radar based on p...

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第四届国际微波与毫米波技术会议

作者： SONG Lizhong QIAO Xiaolin MENG Xiande (Dep of Electronics and communication Engineering Harbin Institute of Technology Harbin 150001 China)

＜正＞For the millimeter wave radar, angle glint of extended targets is the main angle error, A new Kind of dual polarization wide band millimeter wave radar is proposed and a glint suppression technology based on polarization filtering is studied in this paper. Firstly the echo signal is processed into one dimension range profile based on high range resolution of millimeter wave radar and the effective strong scattering centers are detected, secondly the polarization filtering is used to the signals in the range cell where the scattering centers exist in order to suppress clutter and increase the angle measurement precision of single scattering center, finally the angle of each scattering center is measured by amplitude sum/difference and the target average angle is obtained by weighting all the scattering centers, which can realize the correct track on the target, Theoretical analysis and simulation results indicate that the technology can obviously increase the angle measurement precision of the whole target.

关键词： Millimeter wave Glint high resolution Polarization filtering

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THE RESEARCH ON A NOVEL LINEAR STEPPING PIEZOELECTRIC STACKS ACTUATOR

THE RESEARCH ON A NOVEL LINEAR STEPPING PIEZOELECTRIC STACKS...

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2015全国压电和声波理论及器件技术研讨会

作者： Hong-xuan ZHANG Liang WANG Jia-mei JIN State Key Laboratory of Mechanics and Control of Mechanical Structures Nanjing University of Aeronautics and Astronautics

A novel linear stepping piezoelectric stacks actuator is proposed,which contains three drive units and can achieve bidirectional movements with high resolution and large-stroke by applying with signals to each unit with a defined sequence signal.The structure and operating principle of the piezoelectric stacks actuator are presented in detail.A prototype was fabricated,and a series of experiments were conducted to reveal its working performances.The experimental results indicated that the actuator can change the distance of the stepping motion by adjusting the value of the driving signals,and the speed of the actuator is proportional to the operating frequency within a certain range of frequency.The actuator achieves two-way movements with a position precision of 400nm.The maximum load of the actuator is 20 N,and the moving speed can reach 0.83 mm/s.The actuator has a broad application potential on the micro operation,optical engineering,precision positioning and other cutting-edge fields.

关键词： Piezoelectric stacks actuator Stepping motion high resolution

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Exploring picoscience with atomic force microscopy

Exploring picoscience with atomic force microscopy

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第18届国际真空大会

作者： Franz J. Giessibl Institute of Experimental and Applied Physics University of Regensburg

＜正＞Scanning tunneling microscopy （STM） and atomic force microscopy （AFM） measure different physical quantities and previously, the experimental setup of an STM has been quite different from the setup of

关键词： Atomic Force Microscopy high resolution

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