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用聚苯乙烯小球模拟生物组织中的光强分布

物理学报 2003年第2期52卷 324-327页

作者：郭红莲程丙英张道中中国科学院物理研究所凝聚态物理中心光物理实验室北京100080

用水中周期排列的直径为 3.m的单层聚苯乙烯小球以及单个聚苯乙烯小球模拟对光敏感的生物组织 ,如绿色植物叶肉细胞、动物皮肤的表皮细胞、苍蝇蜜蜂等的复眼以及一种海蛇尾背部的光敏器官的光强分布 .通过观测聚苯乙烯小球在不同深度... 详细信息

用水中周期排列的直径为 3.m的单层聚苯乙烯小球以及单个聚苯乙烯小球模拟对光敏感的生物组织 ,如绿色植物叶肉细胞、动物皮肤的表皮细胞、苍蝇蜜蜂等的复眼以及一种海蛇尾背部的光敏器官的光强分布 .通过观测聚苯乙烯小球在不同深度的光强分布 ,发现随着深度的改变其光强分布是截然不同的 .在小球的横截面上 ,光强分布不很均匀而且呈有规律的花纹图案 .在小球的外面 ,光强分布表现为独立的透镜成像分布 .周期排列的小球与单个小球在其横截面上的光强分布也完全不同 ,前者的光强分布表现出球与球之间很大的相关性 .

关键词：聚苯乙烯小球模拟生物组织周期排列光强分布

ELECTRON CRYSTALLOGRAPHIC STUDY ON STRUCTURES OF MINUTE CRYSTALS

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ELECTRON CRYSTALLOGRAPHIC STUDY ON STRUCTURES OF MINUTE CRYS...

The Tenth chinese-Japanese Electron Microscopy Seminar

作者： F.H.Li institute of physics & Center for condensed matter {3. chinese academy of sciences Beijing 100080 china

＜正＞*** The development of high-resolution electron microscopy（HREM）has provided a new approach to crystal structure *** through the sample the electron wave is modulated to form the exit wave that carries the structural information of the *** exit wave is also the object wave（q（r））for the objective lens in the electron

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Frequency-stabilized Yb：fiber comb with a tapered single-mode fiber

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chinese physics B 2016年第4期25卷 166-170页

作者：谢阳韩海年张龙于子蛟朱政侯磊庞利辉魏志义 School of physics and Optoelectronic Engineering Xidian UniversityXi'an 710071China Beijing national laboratory for condensed {3. physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China

We demonstrate a stable Yb：fiber frequency comb with supercontinuum generation by using a specially designed tapered single-mode fiber, in which a spectrum spanning from 500 nm to 1500 nm is produced. The carrier-envelope offset signal of the Yb：fiber comb is measured with a signal-to-noise ratio of more than 40 dB and a linewidth narrower than 120 kHz. The repetition rate and carrier-envelope offset signals are simultaneously phase locked to a microwave reference frequency.

关键词： tapered single-mode fiber supercontinuum generation optical frequency comb

The preparation and unique properties of diamond nanocone arrays

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The preparation and unique properties of diamond nanocone ar...

中国真空学会2012学术年会

作者： C.Z.Gu Beijing national laboratory of condensed {3.,institute of physics,chinese academy of sciences,Beijing 100080,china

Due to the high aspect ratio and stable mechanical properties,the conical surface nanostructures show wide potentials in many application fields such as optics,electronics,thermology and ***,the complicate fabrication...

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Phase transition and chemical decomposition of liquid carbon dioxide and nitrogen mixture under extreme conditions

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chinese physics B 2016年第2期25卷 312-319页

作者：姜晓旭陈冠宇李玉同程新路唐翠明 Institution of Atomic and Molecular physics Sichuan University Beijing national laboratory for condensed {3. physics Institute of Physics Chinese Academy of Sciences Technology Development Center Central Semiconductor Manufacturing Corporation Department of physics and Mathematics Sichuan University of Science and Engineering

Thermodynamic and chemical properties of liquid carbon dioxide and nitrogen（CO_（2~–）N_2） mixture under the conditions of extremely high densities and temperatures are studied by using quantum molecular dynamic（QMD） simulations based on density functional theory including dispersion corrections（DFT-D）. We present equilibrium properties of liquid mixture for 112 separate density and temperature points, by selecting densities ranging from ρ = 1.80 g/cm^3.to 3.40 g/cm^3.and temperatures from T = 500 K to 8000 K. In the range of our study, the liquid CO_（2~–）N_2 mixture undergoes a continuous transition from molecular to atomic fluid state and liquid polymerization inferred from pair correlation functions（PCFs）and the distribution of various molecular components. The insulator–metal transition is demonstrated by means of the electronic density of states（DOS）.

关键词： liquid CO2-N2 mixture quantum molecular dynamic (QMD) simulations DFT-D phase transi- tion

Al-doping-induced magnetocapacitance in the multiferroic CuCrS_2

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chinese physics B 2013年第2期22卷 477-480页

作者：刘荣灯刘蕴韬陈东风何伦华闫丽琴王志翠孙阳王芳卫 china institute of Atomic Energy State Key laboratory of Magnetism Beijing National Laboratory for Condensed Matter PhysicsInstitute of Physics Chinese Academy of Sciences

In this paper,magnetic and dielectric properties of the quasi-two-dimensional triangular-lattice system CuCrS2 and its B-site-diluted analogs CuAl1-xCrxS2（x = 0.01 and x = 0.02） are *** phase transition is observed at about 3..5 K by magnetization measurement without shift induced by a small amount of doping *** effect is found near TN in each of the three *** dielectric constant decreases and the magnetocapacitance increases with the increase of substitution of nonmagnetic Al3. ions for the magnetic Cr^3. *** negative magnetocapacitive effect reaches ～ 13. for CuAl0.02Cr0.98S2.

关键词： magnetocapacitance dielectric property magnetoelectric coupling antiferromagnetics

The p,p’-dimercaptoazobenzene produced from 4-aminothiophenol in Cu sol by surface photochemistry reaction

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The p,p’-dimercaptoazobenzene produced from 4-aminothiophen...

第十六届全国光散射学术会议

作者： M.T.Sun (Beijing national laboratory for condensed {3. physics,institute of physics,chinese academy of sciences,P.O.Box 603.146,Beijing,100190,P.R.china

＜正＞The experimental and theoretical evidence has been provided that the p,p’-dimercaptoazobenzene is produced from 4-aminothiophenol in Cu sol by surface photochemistry *** firstly measured the normal Raman spectroscopy of 4-aminothiophenol,then measured the surface enhanced Raman scattering spectrum of 4-aminothiophenol in Cu *** experimental SERS spectrum reveals that the p,p’-dimercaptoazobenzene is produced from 4-aminothiophenol in Cu sol by surface photochemistry reaction.

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CVD Synthesis of Single-Walled Boron Nitride nanotubes

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CVD Synthesis of Single-Walled Boron Nitride Nanotubes

2011中国材料研讨会

作者： Muhong Wu 1,3.Wenlong Wang,1,Xuedong Bai,1,Yu Sui 3.and Enge Wang,1,2 1 Beijing national laboratory for condensed {3. physics,institute of physics,chinese academy of sciences,Beijing 100190,china 2 International Center for Quantum Materials,School of physics,Peking University,Beijing 100871,china 3.Center for condensed {3. Science and Technology (CCMSIT),Department of physics,Harbin institute of Technology,Harbin 150001,china

＜正＞As the binary III-VI homolog of carbon nanotubes（CNTs）,the boron nitride nanotubes（BNNTs）share the most structural similarity with CNTs and can be regarded as an important

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Structural phase transitions of tellurium nanoplates under pressure

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chinese physics B 2015年第3期24卷 280-283页

作者：李超 Arfan Bukhtiar 沈希孔盼盼王伟鹏赵豪飞姚湲邹炳锁李延春李晓东刘景靳常青禹日成 Beijing national laboratory for condensed {3. physics Institute of PhysicsChinese Academy of Sciences Beijing Key laboratory of nanophotonics and Ultrafine Optoelectronic Systems Beijing Institute of Technology institute of High Energy physics Chinese Academy of Sciences

In situ high-pressure angle dispersive x-ray diffraction experiments using synchrotron radiation on Te nanoplates were carried out with a diamond anvil cell at room temperature. The results show that Te-Ⅰ with a trigonal structure transforms to triclinic Te-Ⅱ at about 4.9 GPa, Te-Ⅱ transforms to monoclinic Te-Ⅲ at about 8.0 GPa, Te-Ⅲ turns to rhombohedral Te-Ⅳ at about 23.8 GPa, and Te-Ⅳ changes to body centered cubic Te-Ⅴ at 27.6 GPa. The bulk moduli B0 of Te nanoplates are higher than those of Te bulk materials.

关键词： tellurium nanoplates phase transition high pressure