Enhanced Work Function of Al-Doped Zinc-Oxide Thin Films by Oxygen Inductively Coupled PlasmaTreatment简

Al-doped zinc-oxide （AZO） thin films treated by oxygen and chlorine inductively coupled plasma （ICP） were compared. Kelvin probe （KP） and X-ray photoelectron spectroscopy （XPS） were employed to characterize the effect of treatment. The results of KP measurement show that the surface work function of AZO thin films can increase up to 5.92 eV after oxygen ICP （O-ICP）＇s treatment, which means that the work function was increased by at least 1.1 eV. However, after the treatment of chlorine ICP （CI-ICP）, the work function increased to 5.44 eV, and the increment was 0.6 eV. And 10 days later, the work function increment was still 0.4 eV after O-ICP＇s treatment, while the work function after Cl-ICP＇s treatment came back to the original value only after 48 hours. The XPS results suggested that the O-ICP treatment was more effective than CI-ICP for enhancing the work function of AZO films, which is well consistent with KP results.     

Enhanced Work Function of Al-Doped Zinc-Oxide Thin Films by Oxygen Inductively Coupled Plasma Treatment

Al-doped zinc-oxide(AZO) thin films treated by oxygen and chlorine inductively coupled plasma(ICP) were compared. Kelvin probe(KP) and X-ray photoelectron spectroscopy(XPS) were employed to characterize the e?ect of treatment. The results of KP measurement show that the surface work function of AZO thin films can increase up to 5.92 eV after oxygen ICP(O-ICP)'s treatment, which means that the work function was increased by at least 1.1 eV. However, after the treatment of chlorine ICP(Cl-ICP), the work function increased to 5.44 eV, and the increment was 0.6 eV. And 10 days later, the work function increment was still 0.4 eV after O-ICP's treatment, while the work function after Cl-ICP's treatment came back to the original value only after 48 hours. The XPS results suggested that the O-ICP treatment was more e?ective than Cl-ICP for enhancing the work function of AZO films, which is well consistent with KP results.     

Experimental Investigation of Surface Wave Plasma Excited by a Cylindrical Dielectric Rod

An improved surface wave plasma source equipped with a cylindrical quartz rod has been developed, which has great potential in processing inner wall of cylindrical workpieces. A cylindrical quartz rod not only excites the plasma around the rod, but also guides surface wave plasma along the rod. The distributions of plasma density and plasma temperature under different incident microwave powers and pressures are diagnosed by a Langmuir probe. The electron density near the rod is around the order of 10^11cm^-3. When the incident power is 450 W, the length of surface wave plasma column can reach up to 420 mm at 20 Pa.     

一种酸性压裂液体系的室内研究

常规的羟丙基瓜胶压裂液体系一般在碱性条件下交联,对于碱敏性地层不能达到理想的压裂效果。文章通过室内研究,筛选出一种酸性压裂液体系:0.8%~1.0%低分子稠化剂AAP+1.0%KCl+0.3%助排剂S-203,pH在5左右以交联比为100∶3.0~100∶3.5与交联剂交联。该压裂液体系可耐温达到110℃,在170 s-1连续剪切1.5 h后粘度仍有61.3 mPa s,破胶后破胶液粘度小,易于返排,该压裂液体系对于碱敏性储层有较好应用前景。     

数字化测绘技术的应用浅析

随着社会的不断进步,工程测量的服务领域也相应进一步延伸,而且正朝着测量数据采集和处理的自动化、实时化和数字化方向发展.本文重点就工程勘查中数字化测绘技术的应用进行了相关分析.     

碳纤维等级对迫击炮复合身管多目标优化设计的影响

将高性能碳纤维用作迫击炮身管外部增强层,可大大降低身管质量。在湿法缠绕工艺中,针对缠绕张力对金属内衬的强化效应,基于正交各向异性材料的厚壁圆筒理论和基于小变形假设的弹性叠加理论,提出了适用于多角度分层缠绕的内衬预应力离散叠加算法。针对复合身管中受内压的薄壁内衬碳纤维缠绕圆筒典型结构,以复合身管质量和抗弯刚度为优化目标,提出了基于多岛遗传算法的复合身管多目标优化设计方法。通过不同材料搭配方案的Pareto解集对比表明,M46方案相比T300和T700方案质量更轻、刚度更高,其中Ni_2/M46方案优化效果最好,说明高模量碳纤维更具轻量化优势,并通过有限元仿真和水压试验验证了优化结果的有效性。     

LCL型光伏并网逆变器电流内环控制方法

针对LCL型光伏并网逆变器存在的谐振问题,建立了电流内环的控制模型,并分析了其开环传递函数。由分析可知,采用逆变器输出电流反馈进行电流内环控制时,控制器中包含一个固有阻尼项,该阻尼项有利于提高控制系统的阻尼、抑制LCL滤波器的谐振。在此基础上,提出了一种基于逆变器输出电流反馈的准比例谐振(proportional resonant,PR)电流内环控制策略。该控制策略没有引入额外的无源阻尼和有源阻尼,仅使用逆变器输出电流反馈进行控制,便可有效抑制LCL滤波器的谐振问题,提高控制系统的稳定性。仿真和实验结果验证了所提控制策略的有效性。     

见义勇为“石油哥”

3月27日下午5时许,重庆气矿开县作业区员工邹华从厂房归来,突然发现一户村民家浓烟滚滚。听到呼救声,邹华立即招呼李东明和黄昌君救火。李泽斌、曾勇等员工也迅速带上灭火器投入救火。经过大家近一个小时的努力,烈焰被彻底扑灭。要不是你们这些见义勇为的石油哥,今天我的损失就大了。村民王金云     

中原石油勘探局1998年勘探成效显著

1998年,中原石油勘探局以“勘探取得更大突破、争取实现资源接替”为勘探战略方针,取得弓】人注目的成绩：一是在东渡凹陷“三新”领域取得重大突破。西洼南部具科学探索意义的模深8井,中途试油获23．93m3／d的工业油流,展示了近2000km2的良好勘探前景。二是白音查干凹陷取得突破。在达尔其地区完钻的7口探井、评价井均发现良好油气显示,尤其是达9断块控制地质储量1769×104t、落实7.2km2。三是勘探成本控制成效显著,1998年的勘探成本比1997年大幅降低,基本实现全年制定的成本控制目标。中原石油勘探局1998年勘探成效显著@李泽斌…     

无人值班变电站远动系统的抗干扰措施

以东莞１１０ｋＶ无人值守变电站为例,对远支系统设备的受干扰问题进行浅析,提出了各种抗干扰技术的实际应用和措施。