高斯光束计算平板波导自由传输区远场分布及其修正

对近轴近似条件下求解亥姆霍兹方程得到的高斯光束显式传播公式做了分析，同时，基于基尔霍夫衍射理论，在菲涅耳近似的条件下给出了相应的高斯光束在远场的传播公式，在此基础上，对近轴近似条件做出了定量分析，给出了这个近似条件引入的误差，提出了一种计算高斯光束远场分布的修正方法，并采用有限差分-光束传播方法(FD-BPM)来检验各种方法的准确性。把这种修正方法应用到平面光集成波导器件，如阵列波导光栅(AWG)、蚀刻衍射光栅(EDG)等器件的设计和模拟中，可以大大降低工作的复杂性，同时可以得到精确的结果。     

儿童的铅中毒问题──Ⅱ．彩色油墨中铅的测定

用能量色散Ｘ射线荧光分析法测定了某厂生产的４４种彩色油墨纸中的铅含量．结果发现，除５种油墨外，其它３９种彩色油墨纸中的铅含量均比对照纸中高９倍以上，其中桔黄色、桔红色树脂胶版油墨高５００倍以上，棕色树脂胶版油墨高３７９倍，深黄色和柠檬黄色树脂铅印油墨分别高１７０和１１３倍．这表明，彩色油墨印刷品可能是儿童慢性铅中毒的重要污染源．     

Field Emission from Silicon Nanocrystallite Films with Compact Alignment and Uniform Orientation

Patterned silicon nanocrystallite (SINC) films were fabricated on (100) orientation p-type boron-doped sificon wafer by the hydrogen ion implantation technique and the anodic etching method. The efficient field emission with low turn-on field of about 3.5V/μm at current density of 0.1μA/cm^2 was obtained. The emission current density from the SiNC films reached 1mA/cm^2 under a bias field of about 9.1V/μm. The experimental results demonstrate that there are great potential applications of the SiNC films for fiat panel displays. A surface treatment with hydrogen plasma was performed on the SiNC films and a significant improvement of emission properties was achieved.     

β-环糊精键合蚀刻开管毛细管电色谱柱的制备与评价

研究环糊精键合蚀刻毛细管柱的制备方法，考察了电渗流性质及其电色谱性能；其电渗流大小和方向都可调控；有效分离了碱性蛋白和硝基苯酚位置异构体；对安息香和氨基酸衍生物对映异构体能部分分离。     

安培检测芯片毛细管电泳及其初步应用

An end-channel amperometric detector with a guide tube for working electrode was designed and integrated on a home-made glass microchip. The guide tube was directly patterned and fabricated at the end of the detection reservoir, which made the fixation and alignment of working electrode relatively easy. The fabrication was carried out in a two-step etching process. A 30 μm carbon fiber microdisk electrode and Pt cathode were also integrated onto the amperometric detector. The baseline separation of dopamine (DA), catechol (CA) and epinephrine (EP) was achieved within 80 s. Relative standard deviations of not more than 5.2% were obtained for both peak currents and migration times of DA and CA (n=5). Using standard adding method, DA in tLrine and plasma samples was detected. The recoveries were in the range of 83%—103%.     

三元复合驱低浓度体系相行为及中间混合层结构分析

低浓度的表面活性剂ASP(碱/表面活性剂/聚合物)驱油体系溶液与模拟原油混合,研究该体系的相行为和界面张力的变化情况,并应用粒度分析仪和冷冻蚀刻透射电子显微镜技术,对中间混合层的粒径分布及其结构进行研究.发现中间混合层的体积随各组分的浓度变化而有一定的规律性,中间混合层与油相和水相之间的界面张力均能达到超低.特别是得到了冷冻蚀刻电子显微镜照片, 并提出中间混合层为胶束、微乳液、乳状液等表面活性剂聚集体的共存体系,其中微乳液结构占主要地位.这对丰富表面活性剂的理论研究及探讨三元复合驱的驱油机理必将起到重要作用.     

油墨用聚氨酯树脂的研究

研究用于印刷油墨的单组分溶剂型聚氨酯树脂，考查聚合物多元醇和异氰酸酯对树脂微观形态、机械性能以及印刷适应性和附着性等性能的影响。结果表明：聚酯型树脂的附着性较好，4，4-二甲苯甲烷二异氰酸酯(MDI)基树脂的附着性较佳。