Preparation of organic thin-film field effect transistor

The organic thin-film field effect transistor was prepared through vacuum deposition by using teflon as di-electric material. Indium-tin-oxide acted as the source and drain electrodes. Copper phthalocyanine and teflon were used as the semiconductor layer and dielectric layer, respectively. The gate electrode was made of Ag. The channel length between the source and drain was 50 μm. After preparing the source and drain electrodes by lithography, the copper phthalocyanine layer, teflon layer and Ag layerwere prepared by vacuum deposition sequentially. The field effect electron mobility of the device reached 1.1×10ˉ6 cm2/(V@s), and the on/off current ratio reached 500.     

氟塑粘活性炭电极的动电位探讨

本文用三角波动电位扫描法对活性炭表面电化学性质进行了探讨.测得活性炭表面基团的浓度为3.4×1~(-7)(moles/em~2),表面基团数为1.08×1~(20),接近文献值.确定表面电活性基团的氧化与还原都是不可逆的.证实H_2O_2产生于O_2与氢醌基的相互作用,结果还支持醌-氢醌活性基团浓度比决定碳电极电位的假设.     

Catalyst enhanced chemical vapor deposition of nano-particle nickel films on teflon surface

Films formed with nanosized nickel particles on teflon surface were prepared by means of catalyst enhanced chemical vapor deposition (CECVD) with Ni(dmg)₂, Ni(acac)₂, Ni(hfac)₂, Ni(TMHD)₂, and Ni(cp)₂ as precursors, and complexes Pd(hfac)₂, PdCl₂ and Pd(η ³-2-methylallyl)acac as catalyst under carrier gas (H₂). The film growth rate depends on the precursors and substrate temperature. The chemical value, purity and surface morphology of the Ni particle films were characterized by X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). The films obtained were shiny with silvery color, and consisted of grains with a particle size of 50–140 nm. The Ni was metallic of which the purity was about 90%–95% from XPS analysis. SEM micrograph showed that the film had good morphology.      

橡胶支座连续梁桥地震力计算方法的探讨

对橡胶支座连续梁桥在地震作用下的动力特性进行了分析，结果表明我现行《公路工程抗震设计规范》（JTJ004－89）有关橡胶支座连续梁桥纵向地震力计算的方法有一定的局限性，在此基础上，提出了一种改进的计算方法，与动力时程分析结果的比较表明，这一方法是可行的和有效的。     

射频等离子对聚四氟乙烯表面改性研究

以氢气做为气源,利用射频电感耦合的方式产生等离子体,对聚四氟乙烯膜表面进行处理。处理后材料的接触角下降显著,表面能增加,润湿性得到很大提高。实验结果显示了在不同处理时间、不同功率、不同压强条件下对处理结果的影响。     

滑移支座在连续梁桥中的性能模拟分析

通过借助于SAP2000有限元分析软件,对连续梁桥上设置的滑移支座（聚四氟乙烯支座）,采用常用的3种非线性连接单元进行模拟：水平非线性弹簧单元、Wen塑性单元以及摩擦板单元。首先,简单介绍了3种单元的特性,然后以某地区四跨连续梁桥结构为例,对滑移支座分别采用以上3种连接单元进行非线性时程分析,对其分析结果进行对比,为今后桥梁支座的分析提供参考。