Study of the impact of photoionization on negative and positive needle-plane corona discharge in atmospheric air

2016 ◽  
Vol 25 (6) ◽  
pp. 065009 ◽  
Author(s):  
Peyman Dordizadeh ◽  
Kazimierz Adamiak ◽  
G S Peter Castle
Keyword(s):  
Corona Discharge ◽  
Atmospheric Air ◽  
The Impact

scholarly journals THE IMPACT OF COVID-19 QUARANTINE MEASURES ON THE LEVEL OF AIR POLLUTION IN THE SHCHUCHINSK-BOROVSKAYA RESORT AREA

2021 ◽  
Author(s):  
Maikanov Balgabay ◽  
Auteleeva Laura
Keyword(s):  
Air Pollution ◽  
Air Quality ◽  
Sulfur Dioxide ◽  
Maximum Permissible Concentration ◽  
Atmospheric Air ◽  
Standard Index ◽  
High Degree ◽  
The Impact ◽  
Very High

In this study, changes in air quality were quantified before and during the introduction of COVID-19 quarantine measures in the Shchuchinsk-Borovskaya resort area. During 2020, there were only 49 resolutions "On strengthening restrictive quarantine measures in the territory of the Akmola region"on the territory of the resort zone. The maximum permissible concentration of sulfur dioxide in the atmospheric air has been exceeded. We have revealed that in the entire territory of the resort area for 2018-2019. atmospheric air pollution, according to the standard index, was elevated and high (3.38 to 6.4), according to the highest frequency (16.6 to 100%), there was a very high degree of pollution, and in 2020, the indicators of the standard index and the highest frequency were within the norm.

Corrosion of Co in BEOL interconnects in dilute HF solution

2018 ◽  
Vol 282 ◽  
pp. 256-262
Author(s):  
Yuya Akanishi ◽  
Els Kesters ◽  
Quoc Toan Le ◽  
Frank Holsteyns
Keyword(s):  
Dissolved Oxygen ◽  
Etch Rate ◽  
Galvanic Corrosion ◽  
Barrier Structure ◽  
Corrosion Prevention ◽  
Atmospheric Air ◽  
The Impact

The impact of dissolved oxygen (O2) on cobalt (Co) corrosion in dilute HF (dHF) solution was studied. It was confirmed that Co etch rate was enhanced as the amount of dissolved O2 in the HF solution increased. The Co etch rate was also found to increase radially outward when performed on a single-wafer spin process in atmospheric air due to the uptake of O2 during the dispense process. The galvanic corrosion of Co was investigated with two types of structures with a Co/Cu interface in different dissolved O2 concentrations, i.e. (1) Co bump structures on Cu and (2) Cu lines with a Co/TaN liner/barrier structure. By controlling both the dissolved and the atmospheric O2 levels, galvanic corrosion prevention at the Co/Cu interface was achieved.

scholarly journals FEATURES FOR THE RESPIRATORY SYSTEM DISEASES MORBIDITY IN THE CHILD POPULATION LIVING IN THE IMPACT AREA OF EMISSION COMPONENTS OF LARGE-SCALE ALUMINA PRODUCTION

2019 ◽  
pp. 28-33
Keyword(s):  
Comparative Analysis ◽  
Respiratory System ◽  
Large Scale ◽  
Poor Quality ◽  
Morbidity Rate ◽  
Alumina Production ◽  
Atmospheric Air ◽  
Child Population ◽  
Actual Attendance ◽  
The Impact

We made hygienic assessment of the atmospheric air quality of the observation territory and comparison according to monitoring and field observations, carried out a comparative analysis of the respiratory system diseases morbidity of the child population according to the form of federal statistical observation and actual attendance for medical care for 2014–2017, evaluated the relationship of respiratory system diseases morbidity with the effects of the studied chemical factors. Atmospheric air poor quality for a number of substances has been established in the residential development of the observation territory. An increased morbidity rate of respiratory system diseases and certain nosological forms (chronic diseases of the tonsils and adenoids and bronchial asthma) in areas with stable atmospheric air pollution by emission components of large-scale alumina production has been established as a result of a comparative analysis of morbidity rates. We proved the dependence of the occurrence probability of additional cases of respiratory system diseases on the content in the atmospheric air of suspended solids, fine PM10, PM2.5 fractions, nitrogen dioxide, aluminum, manganese, solid and gaseous fluorides, chromium.

Formation of Silicon-on-Insulator Films from Powders

1991 ◽  
Vol 234 ◽  
Author(s):  
Kamesh V. Gadepally ◽  
Roger M. Hawk ◽  
William D. Brown
Keyword(s):  
Corona Discharge ◽  
Temperature Effects ◽  
Film Formation ◽  
Physical Characteristics ◽  
Silicon Films ◽  
Silicon On Insulator ◽  
Insulating Surfaces ◽  
Heat Treated ◽  
Microelectronics Industry ◽  
The Impact

ABSTRACTSilicon powders have been successfully deposited by a corona discharge assisted electrostatic process on insulating, semiconducting, and conducting substrates. Subsequently, the deposits were heat treated and films have been formed. We present data pertatining to silicon films on insulators. The insulating surfaces used were sapphire, SiO2 on Si, and Si3N4 on Si. The electrical, chemical, and physical characteristics of these films are presented along with the time and temperature effects on the film formation. The impact of the above method with emphasis to the microelectronics industry will be discussed.

Electrostrictive energy conversion property of cellular electrets after corona discharge

2018 ◽  
Vol 32 (07) ◽  
pp. 1850069 ◽  
Author(s):  
J. W. Zhang ◽  
F. K. Gao ◽  
H. C. Sun ◽  
C. Putson ◽  
R. T. Liu
Keyword(s):  
Energy Conversion ◽  
Corona Discharge ◽  
High Voltage ◽  
Before And After ◽  
Electric Dipoles ◽  
Corona Poling ◽  
The Impact ◽  
Cellular Polymer ◽  
Electrostrictive Effect

In this paper, the authors present the electrostrictive energy conversion ability of cellular electrets after the high-voltage corona polarization. Moreover, the electrostrictive effect of such foamed polymer before and after corona polarization has also been compared and discussed. The enhancement of electrostrictive effect of cellular electrets after corona polarization was observed. In particular, the impact on the electrostrictive effect of the macroscopic electric dipoles inside of cellular polymer which are generated by high-voltage corona poling procedure has been investigated. The present research has promoted the development of the application of electret in the field of energy conversion, actuator, transducers, etc.

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