Simple, efficient nanoparticle synthesis technique uses pulsed underwater spark discharge

Scilight ◽  
2021 ◽  
Vol 2021 (7) ◽  
pp. 071102
Author(s):  
Matthew Ishimaru
Keyword(s):  
Nanoparticle Synthesis ◽  
Spark Discharge ◽  
Synthesis Technique ◽  
Underwater Spark Discharge

Third Paper: Comparison of the Behaviour of Different Sheet Materials Formed by the Underwater Spark Discharge Method

1964 ◽  
Vol 179 (1) ◽  
pp. 234-239 ◽  
Author(s):  
J. L. Duncan ◽  
W. Johnson
Keyword(s):  
Discharge Current ◽  
Spark Discharge ◽  
Discharge Process ◽  
Electrical Parameters ◽  
Aluminium Sheet ◽  
Material Thickness ◽  
Sheet Materials ◽  
Discharge Method ◽  
Underwater Spark Discharge

The effect of certain electrical parameters on the forming of flat circular aluminium sheet specimens clamped at their periphery and formed by means of the underwater spark discharge process as described in a previous paper (40) is extended to cover a number of different materials. Experimental observations on the effect of stand-off distance and material thickness on deformation and deflection are included and the speed of movement during the deflection of specimens of different materials is compared. The variation with polar deflection of strain at a particular radius is presented and the nature of the discharge current is also discussed.

scholarly journals Method of definition thermodynamic functions of heavy oil organic mass processed by underwater spark discharge

2017 ◽  
Vol 88 (4) ◽  
pp. 59-65
Author(s):  
A.Zh. Satybaldin ◽  
◽  
A.K. Muratova ◽  
I.A. Kyrgyzalina Kyrgyzalina ◽  
Z.K. Aitpaeva ◽  
...  
Keyword(s):  
Thermodynamic Functions ◽  
Heavy Oil ◽  
Spark Discharge ◽  
Organic Mass ◽  
Underwater Spark Discharge

Pressure caused by behavior of a bubble originated from an underwater spark discharge

1997 ◽  
Author(s):  
Kohji Isuzugawa ◽  
T. Tsuji ◽  
Y. Fushimi ◽  
M. Toda ◽  
Hiroyuki Yoshikawa
Keyword(s):  
Spark Discharge ◽  
Underwater Spark Discharge

scholarly journals http://www.orientjchem.org/vol34no5/germanium-nanoparticles-synthesis-in-spark-discharge/

2018 ◽  
Vol 34 (5) ◽  
pp. 2677-2680 ◽  
Author(s):  
Dmitry Mylnikov ◽  
Anna Lizunova ◽  
Vladislav Borisov ◽  
Sergey Paranin ◽  
Viсtor Ivanov
Keyword(s):  
Specific Energy Consumption ◽  
Nanoparticle Synthesis ◽  
Spark Discharge ◽  
X Ray Diffraction ◽  
Simple Method ◽  
X Ray ◽  
Transmission Electron ◽  
Primary Particles ◽  
Nanoparticles Synthesis ◽  
Discharge Generator

In this paper we present a simple method of Ge nanoparticles synthesis in spark discharge generator (SDG) in pure argon flow. The sizes of the obtained primary particles are in the range of 5-15 nm and particles themselves are combined in agglomerates 80-200 nm in size. Transmission electron microscopy images as well as energy dispersive X-ray analysis and X-Ray diffraction analysis prove that the nanoparticles consist of crystalline germanium. Specific energy consumption of nanoparticle synthesis is 1,37 kW∙h/g.

scholarly journals Influence of Ag Electrodes Asymmetry Arrangement on Their Erosion Wear and Nanoparticle Synthesis in Spark Discharge

2021 ◽  
Vol 11 (9) ◽  
pp. 4147
Author(s):  
Kirill Khabarov ◽  
Maxim Urazov ◽  
Anna Lizunova ◽  
Ekaterina Kameneva ◽  
Alexey Efimov ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Current Pulse ◽  
Discharge Current ◽  
Nanoparticle Synthesis ◽  
Spark Discharge ◽  
Anode Surface ◽  
Electrode Gap ◽  
Discharge Current Pulse ◽  
The Asymmetry ◽  
Constant Polarity

For nanoparticle synthesis in a spark discharge, the influence of the degree of electrode asymmetry in the rod-to-rod configuration, using the example of silver electrodes, on the energy efficiency and nanoparticle composition is studied. The asymmetry degree was determined by the angle between electrodes’ end faces. Two types of discharge current pulses were used: oscillation-damped and unipolar, in which electrodes changed their polarities and had a constant polarity during a single discharge, respectively. A significant influence of the asymmetry degree of the electrode arrangement on the synthesized nanoparticle size, agglomeration and concentration, and on the synthesis energy efficiency, has been established. An increase in the degree of the electrode asymmetry with the oscillation-damped discharge current pulse led to an increased mass production rate and energy efficiency of nanoparticle synthesis, a significant fraction of which had large dimensions of more than 40 nm. The effect of the transfer of synthesized nanoparticles to the opposite electrode at the unipolar discharge current pulse led to the appearance of electroerosive instability, manifested in the formation of a protrusion on the anode surface, around which spark discharges, leading to its further growth and electrode gap closure.

scholarly journals Acoustic signal characteristics of underwater spark discharge with different electrode configurations

AIP Advances ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 125228
Author(s):  
Liang Qiao ◽  
Xiaobing Zhang ◽  
Kai Ding ◽  
Zhen Han ◽  
Bing Yan ◽  
...  
Keyword(s):  
Acoustic Signal ◽  
Spark Discharge ◽  
Signal Characteristics ◽  
Underwater Spark Discharge
Sign in / Sign up

Export Citation Format

Share Document