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Recent Progress of Synthetic Crystals in China

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人工晶体学报 2007年第5期36卷 951-956页

作者： jiang min-hua State Key Laboratory of Crystal Materials Shandong University Jinan 250100 China

This paper briefly reviews the progress of crystal growth and crystal materials in China during recent years.

关键词：中国人工合成晶体研究进展电介质超点阵晶体生长

Organic Nonlinear Optical Crystal MHBA for Compact Blue-Violet Laser

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Chinese Physics Letters 1996年第11期13卷 841-843页

作者： YUAN Duo-rong XU Dong ZHANG Nan LIU ming-guo jiang min-hua Institute of Crystal materials and National Laboratory of Crystal MaterialsShandong UniversityJi’nan 250100

By using a 3-methoxy-4-hydroxy-benzaldehyde(MHBA)crystal as frequency doubler at room temperature,an efficient blue light output for near IR automatic tunable picosecond parametric laser is obtained,and blue-violet light output by frequency doubling of GaAlAs laser diode is also realized.A 404.5nm light,with output power of 3μW is generated from the 1W input power of a 809 nm GaAlAs laser diode on a MHBA crystal device which is 3 mm thick at the phase matching angles ofθ=90°,ψ=15°.

关键词： tunable Crystal MHBA

Synthesis and Crystal Structure of E-4,4’-Bis(N,N-di-n-butylamino)stilbene

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Chinese Journal of Structural Chemistry 2005年第8期24卷 875-878页

作者： ZHANG Xian YU Xiao-Qiang YU Wen-Tao HE Wei jiang min-hua State Key Laboratory of Crystal Materials Shandong University ChinaJinan 250100

The title compound E-4,4＇-bis（N,N-di-n-butylamino）stilbene （abbreviated to BDBAS） was synthesized by a simple and effective solvent-free wittig reaction with a higher *** crystal structure was determined by a four-circle diffractometer. The crystal data： C30H46N2, Mr =434.69, monoclinic, space group P21/n, a = 9.7805（13）, b = 14.3249（16）, c = 10.0243（16） ,A°, a =90.00, β = 98.639（11）, γ = 90.00°, V = 1388.5（3） ,A°^3, Z = 2, Dc = 1.040 g/cm^3, F（000） = 480,μ（MoKa） = 0.059 mm^-1, the final R = 0.0778 and wR = 0.2064. The results reveal that the molecule is a completely reverse 7r-conjugate system.

关键词： BDBAS synthesis crystal structure

Mutually Pumped Phase-Conjugate Mirror: Sickle Configuration

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Chinese Physics Letters 1996年第9期13卷 678-681页

作者： ZHANG Liang-min ZHANG Jing-wen SHAO Zong-shu MU Xiao-dong CHEN huan-chu jiang min-hua National Laboratory of Crystal Materials Shandong UniversityJinan 250100

A mutually pumped phase conjugator is demonstrated with a novel photorefractive crystal of copper-doped potassium sodium strontium barium niobate,in which the beams travel in a geometric path similar to the outline of a *** maximum reflectivity is up to 168%.Faster response times are measured and are also simulated as a function of incident beam power *** available input geometries are *** phase conjugation signals exist wide range of angular and positional *** apparent cross talk is *** faster build-up process of phase conjugation beams is tentatively explained.

关键词： pumped Configuration mutually

复合粘结剂对Fe-MOF衍生催化剂组装锌空电池稳定性影响研究

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化学研究与应用 2024年第3期36卷 616-622页

作者：金虹苏强查国君周来宏黄平江民华丁海峰新余学院新能源科学与工程学院江西新余338004

作为锌空电池阴极催化剂之一,新型Fe-MOF基催化剂相对于商业化的Pt/C+RuO_(2)催化剂来说,不仅价格低廉、比电容高,而且具有双功能催化活性,受到锌空电池研究人员的关注。为了提升Fe-MOF衍生催化剂锌空电池长期运行稳定性,本研究通过优... 详细信息

作为锌空电池阴极催化剂之一,新型Fe-MOF基催化剂相对于商业化的Pt/C+RuO_(2)催化剂来说,不仅价格低廉、比电容高,而且具有双功能催化活性,受到锌空电池研究人员的关注。为了提升Fe-MOF衍生催化剂锌空电池长期运行稳定性,本研究通过优化催化层粘结剂组成和制备工艺,制备组装FeMOF-5%PTN-H锌空电池,并与传统Nafion粘结剂组装电池进行性能比较,分析锌空电池长时间充放电循环电化学稳定性提升机制。研究表明,经过长时间充放电循环测试,5%PTN-H复合粘结剂可以有效抑制Fe-MOF催化层脱落,较好地保持了催化剂粒子原有的结构。充放电循环后,FeMOF-5%PTN-H所组装的电池峰功率密度衰减率为2.3%,仅为FeMOF-N组装电池衰减率(44%)的5.3%。由此可见,5%PTN-H复合粘结剂可以有效提升FeMOF衍生催化剂组装锌空电池长期运行稳定性。本研究从材料构效关系角度,分析了催化层粘结剂对电池稳定性的影响机制,为深入理解和优化改进锌空电池长期运行状态具有重要参考意义。

关键词： Fe-MOF衍生催化剂锌空电池 PTFE 稳定性

Blue and Violet Cerenkov Second Harmonic Generation of Laser Diodes in Proton Exchanged MgO:LiNbO_(3) Optical Waveguide

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Chinese Physics Letters 1996年第10期13卷 741-743页

作者： MU Xiao-dong SHAO Zong-shu ZHANG Heng-li KONG Qing-yu jiang min-hua National Laboratory of Crystal Materials Shandong UniversityJinan 250100

Using the Cerenkov second harmonic generation, 478 nm blue and 402nm violet light are generated by direct frequency doubling of 956 and 804 nm diode lasers in a same proton exchanged MgO:LiNbO3 waveguide. Under the low fundamental guide wave power of less than 1mW, the estimated value of the output blue and violet light power is in the order of 0.1-0.01μW.

关键词： Waveguide violet doubling

罂粟乙碘油用于不孕人群子宫输卵管造影的影像诊断质量和助孕作用分析

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中国妇幼保健 2024年第18期39卷 3537-3540页

作者：曹单蒋敏华徐飞鹤张甦湖州市妇幼保健院妇产科

目的研究罂粟乙碘油用于不孕人群子宫输卵管造影的影像诊断质量和助孕作用。方法选取2020年1月—2022年12月在湖州市妇幼保健院治疗的不孕患者120例为研究对象，分组方法为随机数表法，将研究对象分为对照组（碘海醇，60例）和观察组... 详细信息

目的研究罂粟乙碘油用于不孕人群子宫输卵管造影的影像诊断质量和助孕作用。方法选取2020年1月—2022年12月在湖州市妇幼保健院治疗的不孕患者120例为研究对象，分组方法为随机数表法，将研究对象分为对照组（碘海醇，60例）和观察组（罂粟乙碘油，60例）,比较两组影像诊断质量、疼痛、不良反应及自然妊娠情况。结果与对照组（2.00±0.45）分、（2.03±0.41）分、（1.60±0.49）分、（2.15±0.71）分及（2.00±0.45）分比较，观察组腹腔内分布评分（2.25±0.44）分、输卵管溢出评分（2.63±0.49）分、Fimbrial皱褶评分（2.10±0.44）分、输卵管形态评分（2.57±0.50）分、子宫不透明度/轮廓评分（2.20±0.40）分更高，差异均有统计学意义（t=3.085、7.307、5.857、3.721及2.560,均P0.05）。观察组不良反应发生率（63.33%）低于对照组（93.33%）,差异有统计学意义（χ2=12.102,P0.05）。结论罂粟乙碘油用于不孕人群子宫输卵管造影的影像诊断质量更好，且能够减少不良反应，其助孕作用和碘海醇相当。

关键词：罂粟乙碘油不孕子宫输卵管造影影像诊断质量助孕

Thermal Lens Determination of End-Pumped Solid-state Lasers by a Simple Direct Approach

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Chinese Physics Letters 1999年第3期16卷 181-183页

作者： LIU Jun-hai LU Jian-ren LÜJun-hua SHAO Zong-shu jiang min-hua National Laboratory of Crystal Materials Shandong UniversityJi’nan 250100

The stability of linear planar resonators involved in solid-state lasers is entirely decided by the thermal lens of the laser *** exists a critical point between stable state and unstable state at which the thermal focal length equals the distance from the center of the crystal to one end *** on this fact,a new method for measuring the thermal focal length of the laser crystal has been presented and applied to a Nd^(3+):YVO_(4) crystal at various absorbed pump power levels up to 10 *** results have shown to be in good agreement with theoretical calculation.

关键词： pump state crystal

Two-Photon Absorption-Induced Emission Properties of Dye HMASPS Doped Polymer

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Chinese Physics Letters 2002年第2期19卷 208-210页

作者： Ren Yan jiang min-hua Yang Sheng-Jun Zhou Guang-Yong Xu Xin-Guang Wang Dong Shao Zong-Shu State Key Laboratory of Crystal Materials Shandong University Ji\'nan 250100

The 0.01M two-photon absorption dye trans-4-[p-(N-hydroxyethyl-N-methylamino)styryl]-N-methyl-pyridinium p-toluene sulfonate (HMASPS) doped polymer has been prepared. Whenpumped by the picosecond pulse from the pulsed mode-locked Nd:YAG laser, the polymer emits more intense upconverted fluorescence andsuperradiance compared to the solution sample of the dye. The two-photon pumped lasing with oscillating pulses has also beenobtained. Compared to the dye in its solution state, the emission spectra of the polymer are all blueshifted. The polymer has a longupconverted fluorescent lifetime of about4.041±0.04ns

关键词： Photons