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Wet-chemical synthesis and characteristics of Au nanoshell

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Science china Chemistry 2005年第5期48卷 431-435页

作者： LIU Zhongxin1,2. SONG Hongwei1, YU Lixin1,2. YANG Linmei1,2.& PAN Guohui1,2.1. key laboratory of {2. state physics, changchun institute of optics, fine mechanics and physics, chinese academy of sciences, changchun 130033, china 2. Graduate School of the chinese academy of sciences, Beijing 100039, china 1. key laboratory of {2. state physics Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences 130033 Changchun China 2. Graduate School of the chinese academy of sciences 100039 Beijing China

Gold nanoshells were prepared by an easy wet-chemical method, with Ag nanoparticles used as the templates. Transmission electron microscopy (TEM) indicated that the shells were sphere in shape, the size was homogenous, being about 2. nm, and no hard ag-glomerates were observed. The plasma resonance absorption of gold was tuned from visible to near-infrared (NIR) with the increased volume of HAuCl4. The temperature grads (?T) of the gold nanoshell hydrosol under the exposure of an 808-nm optical fiber laser with different power den-sities were measured. The highest ?T was 30℃ (5 W/cm2. irradiation area was 2.cm2.. This kind of gold nanoshell hydrosol is a promising material to be used in biomedicine such as photo-thermal cancer therapy, and its special photothermal convert property will photothermally trigger drug release.

关键词： wet-chemical synthesis, Au, nanoshell, NIR absorption, photothermal conversion.

An improved method for progressive animation models generation

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Science china(Information sciences) 2010年第7期53卷 1312-1321页

作者： ZHANG ShiXue1,2. ZHAO JinYu1 & WU EnHua2.3 1changchun institute of {2., fine mechanics and physics, chinese academy of sciences, changchun 130033, china 2.epartment of Computer and Information Science, University of Macau, Macao, china 3state key laboratory of Computer Science, institute of Software, chinese academy of sciences, Beijing 100190, china 1. changchun institute of optics Fine Mechanics and Physics Chinese Academy of Sciences Changchun 130033 China2. Department of Computer and Information Science University of Macau Macao China3. State Key Laboratory of Computer Science Institute of Software Chinese Academy of Sciences Beijing 100190 China

In computer graphics, animated models are widely used to represent time-varying data. And the progressive representation of such models can accelerate the speed of processing, transmission and storage. In this paper, we propose an efficient method to generate progressive animation models. Our method uses an improved curvature sensitive quadric error metric (QEM) criterion as basic measurement, which can preserve more local features on the surface. We append a deformation weight to the aggregated edge contraction cost during the whole animation to preserve more motion features. At last, we introduce a mesh optimization method for the animation sequence, which can efficiently improve the temporal coherence and reduce visual artifacts between adjacent frames. The results show our approach is efficient, easy to implement, and good quality progressive animation models can be generated at any level of detail.

关键词： animation models LOD progressive mesh mesh optimization

A photonic crystal side-coupled waveguide based on a high-quality-factor resonator array

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chinese physics B 2012年第3期21卷 275-282页

作者：崔乃迪梁静秋梁中翥王维彪 state key {2. of Applied optics Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of Sciences Graduate University of chinese academy of sciences

Based on the present coupled mode theory of the photonic crystal resonator array in this paper, we propose a novel side-coupled waveguide to achieve highly efficient coupling of photonic crystal devices. It is found that the coupling efficiency is sensitive to the interval, the total number and the quality factor of the resonator. Considering the coupling efficiency and the coupling region, we select five resonators with an interval of six lattice periods. By optimizing the structure parameters of the waveguide and resonator, the quality factors of the resonator can be modulated and the coupling efficiency of the side-coupled waveguide reaches 95.47% in theory. Compared with other coupling methods, the side-coupled waveguide can realize efficient coupling with a compact structure, a high level of integration and a low degree of operational difficulties.

关键词： side-coupled waveguide photonic crystal high-quality-factor cavity

A　New　Fourier　Iterative　Algorithm　for　the　Design　of　Phase－only　Diffractive　Optical　Element　Used　in　Laser　Beam　Shaping

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chinese Journal of Lasers 1996年第5期B5卷 451-460页

作者： SANG Tao LIAO Jianghong LU Zhengwu WENG Zhicheng (The state key Lab of Applied {2., changchun institute of optics and fine mechanics,chinese of sciences, P. O. Box 102., changchun 13002., china) changchun Inst of optics and {2. Mechanics Changchun China

ＡＮｅｗＦｏｕｒｉｅｒＩｔｅｒａｔｉｖｅＡｌｇｏｒｉｔｈｍｆｏｒｔｈｅＤｅｓｉｇｎｏｆＰｈａｓｅ－ｏｎｌｙＤｉｆｆｒａｃｔｉｖｅＯｐｔｉｃａｌＥｌｅｍｅｎｔＵｓｅｄｉｎＬａｓｅｒＢｅａｍＳｈａｐｉｎｇＳＡＮＧＴａｏ；... 详细信息

ＡＮｅｗＦｏｕｒｉｅｒＩｔｅｒａｔｉｖｅＡｌｇｏｒｉｔｈｍｆｏｒｔｈｅＤｅｓｉｇｎｏｆＰｈａｓｅ－ｏｎｌｙＤｉｆｆｒａｃｔｉｖｅＯｐｔｉｃａｌＥｌｅｍｅｎｔＵｓｅｄｉｎＬａｓｅｒＢｅａｍＳｈａｐｉｎｇＳＡＮＧＴａｏ；ＬＩＡＯＪｉａｎｇｈｏｎｇ；ＬＵＺ...

关键词： diffractive optical element phase retrieval laser

Azimuthal anchoring of a nematic liquid crystal on a grooved interface with anisotropic polar anchoring

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chinese physics B 2012年第6期21卷 378-384页

作者：周璇张志东叶文江宣丽 state key {2. of Applied optics Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of Sciences Graduate School of the chinese academy of sciences Department of physics Hebei University of Technology

Zhang Y J et al.[Zhang Y J,Zhang Z D,Zhu L Z and Xuan L 2.11 Liquid Cryst.38 355] investigated the effects of finite polar anchoring on the azimuthal anchoring energy at a grooved interface,in which polar anchoring was isotropic in the local tangent plane of the *** this paper,we investigate the effects of both isotropic and anisotropic polar anchoring on the surface anchoring energy in the frame of Fukuda et al.’s *** results show that anisotropic polar anchoring strengthens the azimuthal anchoring of grooved *** the one-elastic-constant approximation（K11 = K2. = K33 = K）,the surface-groove-induced azimuthal anchoring energy is entirely consistent with the result of Faetti,and it reduces to the original result of Berreman with an increase in polar ***,the contribution of the surface-like elastic term to the Rapini-Papoular anchoring energy is zero.

关键词： azimuthal anchoring energy surface grooves anchoring isotropy anchoring anisotropy

Infrared transparent frequency selective surface based on iterative metallic meshes

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chinese physics B 2015年第3期24卷 107-110页

作者：于淼徐念喜高劲松 key laboratory of Optical System Advanced Manufacturing Technology Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of Sciences University of chinese academy of sciences

In this paper, we present an infrared transparent frequency selective surface（ITFSS） based on iterative metallic meshes, which possesses the properties of high transmittance in infrared band and band-pass effect in millimeter wave band. Cross-slot units are designed on the iterative metallic meshes, which is composed of two same square metallic meshes with a misplaced overlap. In the infrared band of 3–5 μm, the ITFSS has an average transmittance of 80% with a Mg F2.substrate. In the millimeter wave band, a transmittance of-0.74 d B at the resonance frequency of 39.4 GHz is obtained. Moreover, theoretical simulations of the ITFSS diffractive characteristics and transmittance response are also investigated in detail. This ITFSS may be an efficient way to achieve the metamaterial millimeter wave/infrared functional film.

关键词： infrared band metallic meshes frequency selective surface

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离子交换铒掺杂磷酸盐玻璃波导特性研究

中国激光 2002年第5期29卷 447-449页

作者：郑杰马少杰张家骅中国科学院长春光学精密机械与物理研究所

给出有关离子交换铒掺杂磷酸盐玻璃波导的制备以及发光特性的基本结果。用Ag+ Na+ 离子交换在含有适量氧化钠的铒掺杂磷酸盐玻璃上很容易实现低损耗平面波导 ,并且离子交换过程对这种玻璃的光谱特性没有影响。

关键词：离子交换铒掺杂磷酸盐玻璃波导

MBE-grown Ridge-waveguide InGaAs/InGaAsP Strained Quantum Well Lasers at 2.μm Wavelength

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chinese Journal of Lasers 2000年第2期9卷 111-115页

作者： BAI Jingsong FANG Zujie ZHANG Yunmei CHEN Gaoting (Shanghai institute of optics and {2. mechanics, The chinese academy of sciences, Shanghai 2.1800, china) LI Aizhen CHEN Jianxin (state key laboratory of Functional Materials of Informatics, Shanghai 中科院上海光学精密机械所上海中科院上海冶金所信息功能材料国家重点实验室上海

The result of molecular beam epitaxy (MBE)-grown ridge-waveguide InGaAs/ InGaAsP/InP strained quantum well lasers at 2.μm wavelength is reported. The pulsed electrical luminescence spectrum at room temperature is observed with peak wavelength of about 1.98 μp. At 77 K the lasers become lasing in pulse regime, with threshold current of about 18- 30 mA, peak wavelength of about 1. 87 - 1. 91 μp, and single longitudinal mode operation in the current range of 160-2.0 mA.

关键词： MBE InGaAs/InGaAsP strained quantum well lasers ride-wavequide

TeO_(x) Thin Films for Write-Once Optical Recording Media

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Journal of Materials Science & Technology 2004年第6期20卷 678-680页

作者： Qinghui LI, Donghong GU and Fuxi GANResearch laboratory for High Density Optical Storage, Shanghai institute of {2. and fine mechanics, chinese academy of sciences, Shanghai 2.1800, china Lab. of High Density Optical Storage Inst. of Optics and Fine Mech. Chinese Acad. of Sci. Shanghai 201800 China

TeO_x thin films were prepared by vacuum evaporation of TeO_2.powder. Structural characteristic and surface mor-phology of the as-deposited films was analyzed by using X-ray photoelectron spectroscopy, transmission electron microscopy, X-ray diffractometer and atomic force microscopy. It was found that the films represented a two component system comprising Te particies dispersed in an amorphous TeO2.matrix. The dispersed Te particies were in a crystalline state. The TeOx films showed a finely granular structure and a rough surface. Results of the statie recording test showed that the TeO_x films had good writing sensitivity for short-wavelength laser beam (514.5 nm). Primary results of the dynamic test at 514.5 nm were also reported. The TeO_x films were suitable for using as a blue-green wavelength high density optical storage medium.

关键词： TeO_x thin film Statie recording test Dynamic test High density optical storage