光学镜片注塑成型工艺仿真与模腔设计

利用M o ld flow有限元分析软件模拟了某型全聚焦非球面光学镜片的注塑成型过程.对镜片在注塑过程中产生的收缩变形和翘曲变形进行研究.对注塑工艺参数进行优化选择,提出模具型腔的修正方法,并针对特定的镜片进行了模具型腔的设计.对设计和修正后的模腔进行检验和评价.     

玻璃加工质量对有源光纤芯包界面缺陷的影响

通过片状玻璃模拟光纤拉丝情况并采用正交试验法设计实验，研究了掺稀土磷酸盐玻璃光纤纤芯与包层界面在不同光学加工质量下的微观缺陷：研究表明良好的预制棒加工质量可有效改善光纤纤芯与包层的界面状态，并且相对于纤芯玻璃来说，粘度较高的包层玻璃其加工质量对界面缺陷的影响更为显著。在此研究基础上提出了获得良好界面状态的光学加工条件。     

新型前栅极CNT-FED的研究

传统的前栅极场致发射显示板由于介质层和栅极的制作在生成或制作阴极场致发射源之后，在制造过程中容易破坏场致发射源；另外阴极发射对介质层厚度、阳极电压和调制极开口等参数非常敏感，所以器件的发射均匀性难以保证。为了解决这些问题，引入了类似HOP玻璃的结构。阴极上只需要丝印碳纳米管，无需制作介质层和栅极，解决了场致发射源被破坏的问题。阴极与栅极之间真空取代了介质层，由于真空的绝缘性能高于介质层，所以阴极与栅极之间的距离可以减小，栅极的调制效果更显著。由于玻璃的平整度高于一般方法制作的介质层的平整度，所以器件的发射均匀性比较好。     

Kinetics of Glass Transition and Crystallization in Carbon Nanotube Reinforced Mg-Cu-Gd Bulk Metallic Glass

Mg65Cu25Gd10 bulk metallic glass and its carbon nanotube reinforced composite were prepared. Differential scanning calorimeter （DSC） was used to investigate the kinetics of glass transition and crystallization processes. The influence of CNTs addition to the glass matrix on the glass transition and crystallization kinetics was studied. It is shown that the kinetic effect on glass transition and crystallization are preserved for both the monothetic glass and its glass composite. Adding CNTs in to the glass matrix reduces the influence of the heating rate on the crystallization process. In addition, the CNTs increase the energetic barrier for the glass transition. This results in the decrease of GFA. The mechanism of the GFA decrease was also discussed.     

Optical Spectroscopy of Er^3＋ and Er^3＋/Yb^3＋ Co-doped Bi2O3-GeO2-B2O3-ZnO Glasses

The （60 - x）Bi2O3 - xGeO2-30B2O3-10ZnO （x = 5, 10, 20, 30 molar percent） glasses doped with Er^3＋ and Er^3＋/Yb^3＋ were fabricated using the melting method. The thermal stability of the glasses was studied with their DTA curves. The results show that the difference between the glass transition temperature and the crystallization onset temperature increases with the increase of GeO2 content, indicating that the thermal stability of the glass has become better. The absorption spectra were recorded and the stimulated emission cross sections were calculated using the McCumber theory. The Ω2, O4, and Ω6 parameters,the transition probability, the radiative lifetime, and the fluorescence branch ratio of Er^3＋ for optical transition were calculated from their absorption spectra in terms of reduced matrix U^（t）（λ = 2, 4, 6） character for optical transitions. The infrared emission of Er^3＋ was measured upon excitation with 970 nm light and the full width at half-maximum （FWHM） was estimated from the emission spectra. The pumping efficiency and the intensity of the emission at the 1.54 μm band of Er^3＋ were enhanced considerably by co-doping Yb^3＋ .     

Research on Up-Conversion Mechanism in Er3+/Yb3+-Codoped Oxyfluoride Glass

Er3 /Yb3 -codoped oxyfluoride crystallite glass was prepared with melting technique. The compositions and the melting temperature and the annealing temperature of the rare earth-doped crystallite glass were studied in detail. The emission spectra of samples were measured with the Hitachi F-4500 fluorescent photometer pumped by 980 nm wavelength laser. The up-conversion luminescence mechanism was illuminated on the view of the photophysics. By measuring the relationship between luminescent intensity and pump power, it is confirmed that the emission peaks at 550 nm belong to two-photon process, while that at 665 nm belongs to three-photon process. Moreover, the distributions of crystalline were determined by SEM.     

伺服电机在玻璃镀膜电气控制系统中的设计和运用

本文介绍了在我国首条国产化设计的磁控溅射玻璃镀膜生产线电气控制系统中,伺服电机的设计和运用,着重描述了如何运用伺服控制组成一个高精度的运动控制方案。     

玻璃熔窑三维数学模拟的应用及鼓泡模型分析

建立了玻璃熔窑三维数学模型对浮法玻璃熔窑的鼓泡进行模拟，详细研究了不同的鼓泡位置、鼓泡嘴插入深度、鼓泡个数对熔制玻璃的影响。得出鼓泡喷嘴应该在池底以上300mm左右；鼓泡点应在熔化部玻璃液的最高温度点附近；鼓泡器个数达到10或12个时，一排鼓泡才能形成一道“鼓泡幕”，起到阻挡上层液流的作用。     

用VB(Visual Basic)实现稀土掺杂玻璃Judd-Ofelt(J-O)理论计算

介绍了在Windows95以上环境条件下，应用VB编程实现稀土掺杂玻璃中光谱性质Judd-Ofelt(J-O）理论计算，这一领域的研究提供方便，实用的应用程序。     

高档石材装饰--微晶玻璃板施工技术

详细介绍了微晶玻璃板在宁夏回族自治区政府办公楼工程中地面和内墙面的首次运用，微晶板对施工技术要求很高，在不同基层上有不同的施工方法，应充分考虑受力因素及环境的影响。