Regulating Water Adhesion on Superhydrophobic TiO2 Nanotube Arrays

Bioinspired surfaces with special wettability have attracted a significant attention in recent years because of their potential applications for no loss liquid transfer, anti‐icing, and self‐cleaning. Herein, the realization of two extreme superhydrophobic states on 1H, 1H, 2H, 2H–perfluorooctyltriethoxysilane‐modified TiO₂ nanotube arrays (NTAs) is described by changing the structural characteristics of nanotubes while keeping the surface chemical composition constant. The water adhesive force is regulated in a wide range from ≈4.4 to ≈89.6 μN by the nanotubular diameter, length, density, and surface roughness. The cooperation effect between the negative pressures induced by the volume change of sealed air‐pockets and the van der Waals' attraction at solid–liquid interface contributes to the water adhesion. The superhydrophobic TiO₂ NTAs with a high adhesive force is used as a “mechanical hand” to transfer water microdroplets without any loss, and the one with extremely low adhesive force is utilized as a self‐cleaning and anti‐icing surface.     

多晶硅薄膜压阻系数的理论研究

利用应力退耦模型,分别对多晶硅薄膜晶粒中性区和晶界势垒区的压阻系数进行了理论分析,并推导出多晶硅压阻系数的表达式.实验结果表明,利用文中推导出的理论公式所获得的计算值与实验测量结果基本符合,所给出的有关多晶硅压阻系数的理论结果可以作为多晶硅特性分析的理论依据.     

基于XML自动评阅系统的设计与实现

本文针对面向大面积学生实验操作考试和阅卷的困难,提出了基于XML形式对试题知识考点进行描述的设计思想,通过对操作考试中记录的实验参数、实验状态和实验结果的XML数据进行解析评判,实现对学生实验操作考核自动评阅。在面向大面积学生的实验操作考试中,节省了大量人力、物力,具有很强的实用性。本文以大学物理仿真实验考试系统为例,实现了基于XML描述方案的实验考核自动评阅系统。     

LD抽运的高性能微型绿光激光器

研制成高性能微型全固态绿光激光器。用独特的整体控温技术提高器件效率 ,全部元件固化为一个整体以提高激光输出功率和光束指向稳定性 ,用 1W的LD纵向抽运Nd∶YVO4 /KTP激光器 ,获得 195mW的TEM0 0 模 0 53μm连续激光输出。输出功率不稳定度≤± 2 % ,光束方向稳定性优于 0 0 1mrad/hr和 0 0 3mrad/ 2 4hrs。该器件体积小 ,效率高 ,使用方便。     

InCl分子B~3∏_1态时间分辨谱研究

采用激光诱导荧光技术对ＩｎＣｌ分子 Ｂ３∏１→Ｘ１∑＋荧光光谱进行了分析和归属,并对Ｂ３∏１（ｖ’＝０）→Ｘ１∑＋（ｖ＂＝０）的时间分辨谱进行了观测．首次得到ＩｎＣｌ分子Ｂ２∏１态（ｖ＇＝０）无碰撞辐射寿命 ０≈３５３ｎｓ;无辐射弛豫速率常数ｋＱ≈１．９８５×１０－１０ｃｍ３ｍｏｌｅｃ－１ｓ－１及电子跃迁矩｜Ｒｅ｜２＝ ０．４０Ｄ２．     

Investigation of charge loss characteristics of HfO2 annealed in N2 or 02 ambient

The retention characteristics of electrons and holes in hafnium oxide with post-deposition annealing in a N2 or 02 ambient were investigated by Kelvin probe force microscopy. The KFM results show that compared with the N2 PDA process, the O2 PDA process can lead to a significant retention improvement. Vertical charge leakage and lateral charge spreading both played an important role in the charge loss mechanisms. The retention improvement is attributed to the deeper trap energy. For electrons, the trap energy of the HOS structure annealed in a N2 or 02 ambient were determined to be about 0.44 and 0.49 eV, respectively. For holes, these are about 0.34 and 0.36 eV, respectively. Finally, the electrical characteristics of the memory devices are demonstrated from the experiment, which agreed with our characterization results. The qualitative and quantitative determination of the charge retention properties, the possible charge decay mechanism and trap energy reported in this work can be very useful for the characterization of hafnium charge storage devices.     

高速信号采集记录仪设计

针对高速信号实时采集存储的需求,设计了一种高速信号采集记录仪。记录仪通过高速A/D转换器对信号进行采样,并实时存入NAND FLASH存储阵列中。为提高数据存储速率,综合采用并行总线、交错双平面页编程、多级流水线等技术,大幅提升FLASH的写入速度。记录仪可实现8bit、200MSPS的采样速率,并可将速率为200MB/s的采样数据实时存储。     

利用直接隧穿弛豫谱技术对超薄栅MOS结构中栅缺陷的研究

给出了超薄栅MOS结构中直接隧穿弛豫谱(DTRS)技术的细节描述,同时在超薄栅氧化层(＜3nm)中给出了该技术的具体应用.通过该技术,超薄栅氧化层中明显的双峰现象被发现,这意味着在栅氧化层退化过程中存在着两种陷阱.更进一步的研究发现,直接隧穿应力下超薄栅氧化层(＜3nm)中的界面/氧化层陷阱的密度以及俘获截面小于FN 应力下厚氧化层(＞4nm)中界面/氧化层陷阱的密度和俘获截面,同时发现超薄氧化层中氧化层陷阱的矩心更靠近阳极界面.     

He—Ne激光穴位照射治疗偏头痛35例

本文采用He-Ne激光穴位照射治疗35例偏头痛患者,同时设立普通电针刺法治疗30例作为对照组,并观察了He-Ne激光治疗组部分患者治疗前后甲襞微循环16例及脑血流图20例的变化情况。结果表明,He-Ne激光组治疗效果明显优于对照组（P＜0．05）。说明He-Ne激光穴位照射对于改善微循环调节颅内外血管功能具有显著作用。     

K终端可靠度分解算法中多边形→链简化定理的完善

无向网络K终端可靠度的分解算法中,包括多边形→链简化在内的等可靠度简化和分解定理结合,可以降低算法的复杂度。本文完善了边随机无向网络和混合随机无向网络的4#,6#,7#型多边形→链简化定理。计算机编程验证了其正确性。