FN3高比重合金的研制及应用

本文介绍了FN_3牌号高比重合金的研制过程,主要性能指标达到或超过国内外同类产品水平。由于高比重合金是钨基材料最富有生命力的产品,故应进一步开发其牌号系列,广泛开拓应用领域。     

新型有机发光材料——终二唑衍生物

本文介绍了国际上新发明的有机光致、电致发光材料—二唑衍生物的发光特性和合成路线及各步产物的表征手段。在分析了材料的分子结构特征和发光性能间关系后，探讨了用以改变材料性能的化学修饰途径。     

聚(2,5-二丁氧基)对苯乙炔的合成、表征及发光性能研究

用强碱诱导的脱氯化氢法合成了发光聚合物聚（2，5－二丁氧基）对苯乙炔（PDBOPV），并与前聚物路线合成法进行了比较。脱氯化氢法具有反应时间短和产率高等优点，而且不需要进行高温处理，有利于相关器件的制备。用紫外、红外光谱和^1H-NMR对聚（2，5－二丁氧基）对苯乙进行了表征，测定了荧光（PL）光谱，讨论了烷氧基取代对聚合物光学性质和可溶性的影响。     

MEH-PPV薄膜及其与金属喹啉配合物共混薄膜光伏特性的研究

研究了电子聚合物MEH PPV及其与金属喹啉配合物BAlq共混薄膜的光伏特性。测试结果表明:(1)共混膜中MEH PPV与BAlq发生了纳米级的相分离并形成互相渗透的结构,十分有利于光生激子离解为空穴和电子的过程及载流子在薄膜内的输运;(2)共混后的聚合物光伏器件的短路电流比共混前提高了200余倍。     

Microelectronic neural bridge for signal regeneration and function rebuilding over two separate nerves

According to the feature of neural signals,a micro-electronic neural bridge(MENB)has been designed. It consists of two electrode arrays for neural signal detection and functional electrical stimulation(FES),and a microelectronic circuit for signal amplifying,processing,and FES driving.The core of the system is realized in 0.5-μm CMOS technology and used in animal experiments.A special experimental strategy has been designed to demonstrate the feasibility of the system.With the help of the MENB,the withdrawal reflex function of the left/right leg of one spinal toad has been rebuilt in the corresponding leg of another spinal toad.According to the coherence analysis between the source and regenerated neural signals,the controlled spinal toad’s sciatic nerve signal is delayed by 0.72 ms in relation to the sciatic nerve signal of the source spinal toad and the cross-correlation function reaches a value of 0.73.This shows that the regenerated signal is correlated with the source sciatic signal significantly and the neural activities involved in reflex function have been regenerated.The experiment demonstrates that the MENB is useful in rebuilding the neural function between nerves of different bodies.     

新型高分子电致发光材料：聚对苯乙炔

本文介绍了国际上最新发现的高分子电致发光材料——聚对苯乙炔的性能、合成路线及应用前景。同时也探讨了该材料的发光机理和改变其发光颜色的途径。