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Formation of Nanoparticles by Spark Discharge in Liquid  

Choi, Hoomi (SKKU Advanced Institute of Nanotechnology(SAINT), Sungkyunkwan University)
Kim, Jangah (SKKU Advanced Institute of Nanotechnology(SAINT), Sungkyunkwan University)
Jung, Seungkyo (School of Mechanical and Aerospace Engineering)
Yoon, Juho (Department of Electrical Engineering)
Kim, Taesung (SKKU Advanced Institute of Nanotechnology(SAINT), Sungkyunkwan University)
Publication Information
Particle and aerosol research / v.8, no.1, 2012 , pp. 37-43 More about this Journal
Abstract
In this study, we designed a 'spark in liquid' system. The spark discharge between two electrodes were used to generate particles by using sufficient temperature to evaporate a part of electrodes. The power supply system provides a continuous spark discharge by discharging of the capacitor to ionize the electrodes in liquid. The DC spark discharge system operates with 1-10 kV voltage. Processed copper and graphite rods were used to both electrodes with 1-3 mm diameter. There are several variables which can control the particle size and concentration such as gap distance between electrodes, applied voltage, operating liquid temperature, electrode type and liquid type. So we controlled these variables to confirm the change of particle size distribution and concentration of particles contained in liquid as wt%. 'spark in liquid' system is expected to apply nanoink by control of concentration with analysis of characteristics.
Keywords
Spark discharge; Nano ink; Nanoparticle; copper(Cu); Carbon(C);
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