scholarly journals Effects of electrostatic field strength on grain‐boundary core structures in SrTiO 3

2019 ◽  
Vol 102 (8) ◽  
pp. 4502-4510 ◽  
Author(s):  
Lauren A. Hughes ◽  
Klaus Benthem
Keyword(s):  
Field Strength ◽  
Grain Boundary ◽  
Electrostatic Field ◽  
Boundary Core

Improving electrospinning process by numerical analysis of 3-D computer models

2019 ◽  
Vol 38 (4) ◽  
pp. 1098-1110
Author(s):  
Anna Firych-Nowacka ◽  
Krzysztof Smolka ◽  
Sławomir Wiak
Keyword(s):  
Field Strength ◽  
Electric Field ◽  
Field Intensity ◽  
Electrostatic Field ◽  
Electric Field Intensity ◽  
Computer Models ◽  
Electrospinning Process ◽  
Strength Analysis ◽  
Original Solution ◽  
Content Type

Purpose Electrospinning is a method of the polymer super thin fibres formation by the electrostatic field. The distribution of electrostatic field affects the effectiveness of the electrospinning. Design/methodology/approach This paper presents various computer models that can improve the electrospinning process. The possibilities of modelling the electrostatic field in the design of electrospinning equipment are presented. Findings In the research part, the one focussed on finding a cylinder-shaped collector structure to limit the adverse effect of an uneven distribution of the electric field intensity on the collector. Originality/value The paper concerns the improvement of the electrospinning process with the use of electrostatic field modelling. In the first part, several possible applications of electrostatic models have been indicated, thanks to which the efficiency of the process has been improved. The original solution of the collector geometry was presented, which according to the authors, in comparison with previous models, gives the most promising results. In this solution, it was possible to obtain an even distribution of the electric field intensity while removing the unfavourable effect of the field strength increase on the outer edges of the collector. The most important aspect in this paper is electric field strength analysis.

Experimental Study of Finding Best Way of Radiation Seeds with HVEF

2011 ◽  
Vol 365 ◽  
pp. 440-444
Author(s):  
Jue Hang ◽  
Xin Chen ◽  
Jian Ping Xiong
Keyword(s):  
Experimental Study ◽  
Field Strength ◽  
High Voltage ◽  
Electrostatic Field ◽  
Radiation Transport ◽  
Clc Number ◽  
Document Code ◽  
Mathematical Derivation ◽  
Radiation Time ◽  
Germination Stage

Norder to find the best high-voltage electrostatic radiation seed program, to select two different kinds of cucumbers, vegetables, paddy rice seeds, each seed be divided into 5 experimental groups, and be treated by high voltage electrostatic field (HVEF) at different field strength and time, and testing and statistics of the seeds vigour at germination stage. The results indicated that the greater the radiation field to same seed, the shorter radiation time is required, and vice versa. For each species, E•t tends to a constant (the constant is different in different species). Be proved by mathematical derivation that the HVEF radiation transport essentially energy to the seed, and then will be able to find the best way for HVEF radiation seeds. CLC number: S129 Document code: A.

The Fundamentals of Electrostatic Spinning

1977 ◽  
Vol 47 (12) ◽  
pp. 780-789 ◽  
Author(s):  
Ismail Doĝu
Keyword(s):  
Field Strength ◽  
Electrostatic Field ◽  
Dielectric Breakdown ◽  
Mathematical Treatment ◽  
Lateral Vibration ◽  
Textile Fiber ◽  
Electrostatic Spinning ◽  
Spinning Process ◽  
Freely Suspended ◽  
Field Strengths

A mathematical analysis of uncrimping of textile fibers in an electrostatic field is given. One important result of this analysis is that a textile fiber is very little uncrimped in the field strengths that can possibly be used in this process, since higher field strengths cause a dielectric breakdown. A mathematical treatment of the orientation of fibers in an electrostatic field is also given. The amount of orientation depending on the fiber physical properties and process parameters are calculated. It is shown that a freely-suspended single fiber moving in an electrostatic field may perform either a periodic or nonperiodic lateral vibration depending on the magnitude of the electrostatic field strength. It is shown that in an electrostatic spinning process there is little fiber orientation in the time available before the fiber enters into the rotor-electrode. The critical value of the field strength determining whether a fiber will perform a periodic or nonperiodic movement is calculated. It is shown that the transfer of fibers of variable fineness by means of an electrostatic field from the feeding device to the twisting element is a randomizing process of the positions of fibers relative to each other, and this is rather important as far as the yarn evenness is concerned.

Dependence of Electrostatic Field Strength on Image Transfer Roller Dimensions in a Toner Transfer Region

2012 ◽  
Vol 56 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Julijonas Kaladė ◽  
Robertas Maldzius ◽  
Jonas Sidaravicius ◽  
Petri Sirviö ◽  
Kaj Backfolk
Keyword(s):  
Field Strength ◽  
Electrostatic Field ◽  
Image Transfer ◽  
Transfer Region

scholarly journals Development of Novel Electrostatic Field Strength Sensor Using Air Motor

2020 ◽  
Vol 57 (6) ◽  
pp. 311-316
Author(s):  
Yuki Osada ◽  
Teruo Suzuki ◽  
Kwangseok Choi
Keyword(s):  
Field Strength ◽  
Electrostatic Field ◽  
Air Motor

Research on Direct Effects of High-Voltage Electrostatic Field on Lactoperoxidase's Activity

2013 ◽  
Vol 781-784 ◽  
pp. 372-378
Author(s):  
Xing Ke Ma ◽  
Zheng Wei Du ◽  
Min Zhu ◽  
Bo Jia Mu
Keyword(s):  
Fatty Acid ◽  
Field Strength ◽  
Electric Field ◽  
Electric Field Strength ◽  
High Voltage ◽  
Electrostatic Field ◽  
Fatty Acid Ester ◽  
Acid Ester ◽  
Protective Effects ◽  
Sucrose Fatty Acid Ester

At present, indirect effects of high-voltage electrostatic field on organisms and biological materials have been extensively studied. However, the investigations on direct interaction between the electrostatic field and enzyme are scarce. In this paper, the direct effect of high-voltage electrostatic field on the LP and the protective effects of sucrose fatty acid ester on the activity of enzyme in high-voltage electrostatic field have been experimentally investigated. The results show that, high-voltage electrostatic field has direct effects on the LP and the best condition to enhance the activity of enzyme can be obtained. When the electric-field strength is low, with the increasing of the electric-field strength, the activity of the LP will be weakened. When the electric-field strength exceeds a certain level, the activity of the LP will be enhanced with the increasing of electric-field strength. For too higher electric-field strength , the activity of the LP will be again weakened with the increasing of electric-field strength. The sucrose fatty acid ester in low concentration provides a proper hydrophobic microenvironment for enzyme, which leads to the enhancement of enzyme's activity, while sucrose fatty acid ester in high concentration leads to the weakening of enzyme's activity. Moreover, sucrose fatty acid ester in enzyme solutions has protective effects on enzyme in the electric field and can reduce the impacts of high-voltage electrostatic field on the LP.

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