为提升超高性能混凝土(UHPC)工作性能，制备了聚氧乙烯基(EO)聚醚型与环氧丙烷嵌段聚氧乙烯(EO/PO)聚醚型两种不同结构的减水剂(分别简称PCE-1和PCE-2)。通过测试净浆流动度、浆体黏度、总有机碳、表面张力，研究了上述两种减水剂在低水胶比水泥-硅灰浆体中的性能差异，并对相关作用机理进行了探讨。结果表明：在硅灰掺量(质量分数)5%~25%，水胶比0.16条件下，PCE-2相比PCE-1对硅灰具有更强的吸附-分散作用，水泥-硅灰浆体流动度更高；嵌段聚醚结构可调节间隙液的表面张力和黏度，降低水泥-硅灰浆体黏度。

为将单根纳米线成功组装至微电极两端, 在介电泳力的基础上附加考虑粘滞阻力及布朗力的影响, 建立了单根纳米线受力及运动模型, 通过数值仿真得到纳米线在三维空间中的运行轨迹, 并基于可控介电泳工作区模型(DWS-DEP)获得了可实现准确跨接的初始点分布区。为选择合适的电极组装单根纳米线, 对三种不同尖端弧度的电极稳态区进行仿真, 结果显示圆弧状电极更易实现一维纳米结构的跨接组装。利用所设计的Ti/Au电极进行纳米线介电泳组装实验, 得到了与仿真相一致的结果。

Optical systems are analyzed with three kinds of rotational symmetric pupil masks: annular Gaussian ring mask, supergaussian ring mask, and quartic phase mask. In these masks, the quartic phase mask is found to be the best one to extend focal depth. Point spread function (PSF) and Strehl ratio (SR) are used to evaluate the imaging quality of the system with different defocus parameters. Without decoding needed, the focal depth of the system with quartic phase mask is four times as deep as aberration-free system. Different from the others, it suffers no obvious loss in the light throughput and lateral resolution. With twice focal depth extension, supergaussian ring mask suffers less loss in light throughput and lateral resolution than annular Gaussian ring mask.

By applying the wavefront coding technique to an optical system, the depth of focus can be greatly increased. Several complicated methods have already been taken to optimize for the best pupil phase mask in ideal condition. Here a simple Strehl ratio based method with only the standard deviation method used to evaluate the Strehl ratio stability over the depth of focus is applied to optimize for the best coefficients of pupil phase mask in practical optical systems. Results of imaging simulations for optical systems with and without pupil phase mask are presented, and the sharpness of image is calculated for comparison. The optimized pupil phase mask shows good results in extending the depth of focus.

A new wavelength beam combining technique for a high-power laser diode bar by using a temperature gradient heat sink has been proposed. The thermal controlling principle of the temperature heat sink has been discussed. It has been proved by experiment that the linear temperature distribution, which generates linear wavelength spread of the output beams from a LD bar, can be obtained by introducing a temperature gradient heat sink and the output beams can be focused into a relative small spot by using the Czerny-Turner beam shaping system.