检索结果-南通市图书馆

Impact of a Bumpy nonuniform electric field on Oscillations of a Massive Point-Like Charged Particle

American Journal of Computational Mathematics 2024年第2期14卷 240-247页

作者： Haiduke Sarafian The Pennsylvania State University University College York PA USA

As a general feature, the electric field of a localized electric charge distribution diminishes as the distance from the distribution increases;there are exceptions to this feature. For instance, the electric field of a charged ring (being a localized charge distribution) along its symmetry axis perpendicular to the ring through its center rather than as expected being a diminishing field encounters a local maximum bump. It is the objective of this research-oriented study to analyze the impact of this bump on the characteristics of a massive point-like charged particle oscillating along the symmetry axis. Two scenarios with and without gravity along the symmetry axis are considered. In addition to standard kinematic diagrams, various phase diagrams conducive to a better understanding are constructed. Applying Computer Algebra System (CAS), [1] [2] most calculations are carried out symbolically. Finally, by assigning a set of reasonable numeric parameters to the symbolic quantities various 3D animations are crafted. All the CAS codes are included.

关键词： Nonlinear Oscillations nonuniform electric field Computer Algebra System Mathematica

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The theory of direct magnetoelectric effect in the bilayer system of ferromagnetic–piezoelectric

引用

Journal of Advanced Dielectrics 2016年第1期6卷 55-60页

作者： V.N.Nechaev A.V.Shuba Department of Mathematics and Physical-Mathematical Modelling Voronezh State Technical University Moskowsky Prospect Street Voronezh 394026Russian Federation

The theory of direct magnetoelectric(ME)effect in a bilayer of ferromagnetic and piezoelectric is developed taking into account nonuniform distribution of electrical field on a piezoelectric layer *** simultaneous solution of the motion equations for piezoelectric and ferromagnetic mediums allowed to numerically and analytically calculate the dependence of natural mechanical oscillation on structure parameters and to determine the dependence of ME effect coefficient on frequency of the variable magnetic field.

关键词： Bilayer system magnetoelectric effect natural frequency of oscillations longitudinal magnetoelectric voltage coefficient nonuniform electric field

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Position dependent circuit model for thin avalanche photodiodes

引用

Frontiers of Optoelectronics 2013年第2期6卷 194-198页

作者： Mohammad H. AKBARI Mohsen JALALI School of Engineering Shahed University Tehran *** Iran

This paper presents a circuit model for thin avalanche photodiodes （APDs）. In this model, the nonuniformity of the electric filed in the multiplication region is modeled using a stepwise method. The model also tries to take the effects of carrier＇s position dependent properties, like carder＇s dead length and the history of carder＇s previous ionization into account by developing an effective electric field in the multiplication region. The output photocurrent and multiplication gain obtained from the proposed model for different lengths of the multi- plication region achieve a good agreement in comparison with available experimental data. In addition, calculated excess noise factor reveals the model ability for noise and sensitivity analysis.

关键词： avalanche photodiode (APD) circuit model- ing multiplication gain nonuniform electric field excess noise factor

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Planar Concentric Ring Dielectrophoretic Levitator

Planar Concentric Ring Dielectrophoretic Levitator

引用

The Fourth International Conference on Applied Electrostatics

作者： KaranV.I.S.Kaler Lin Qian Reginald Paul Department of electrical and Computer Engineering Department of electrical and Computer Engineering Department of Chemistry University of Calgary Calgary AB. Canada （T2N-1N4）

＜正＞The DEP effect has been successfully applied to affect feedback controlled levitation of individual micron sized biological cells and inorganic particles. In this earlier work, levitation of cells was achieved using an axis-symmetric focused electric field, resulting from a 3-D conic-plate metallic electrode assembly, where the DEP force acting on a particle is balanced by the force due to gravity. In the present work we have replaced the 3-D metallic electrode structure by a discrete concentric planar ring-plate electrode arrangement to synthesize the focused electric field. The axis symmetric nonuniform electric field in the case was synthesized by appropriately biasing the ring electrodes using a resistive ladder chain. The discrete concentric ring-plate electrode system offers a number of advantages over the conventional cone-plate electrode assembly. The planar structure can be readily realized using conventional IC fabrication process technology and furthermore the precise spatial nature of the non-uniform field can be readily tailored by adjusting the ac potential （voltage） applied to the individual ring electrodes.

关键词： Dielectrophoresis Levitation nonuniform electric field Biological cells Planar concentric electrodes Polarization spectra

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：