Journal of Electrical Engineering and Technology

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지
DOI QR코드

DOI QR Code

Observations of Pulsed Bi-polar Discharges in Saline Solutions with Pin to Plate Electrodes

  • Shin, Bhum Jae (Dept. of Electrical Engineering, Sejong University) ;
  • Seo, Jeong-Hyun (Dept. of Electronics Engineering, Incheon National University) ;
  • Collins, George J. (Department of Electrical and Computer Engineering, Colorado State University)
  • Received : 2018.01.17
  • Accepted : 2018.04.02
  • Published : 2018.09.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, we have been investigated pin to plate pulsed bi-polar discharges in saline solutions, where bubble generation occurs. We integrate basic I-V-t electrical characteristics with the ICCD shadowgraph images, and finally instant and time averaged I-V waveforms. We observed that the bubble formation phase dynamics is quite different corresponding to the polarity applied to the pin electrode. When the pin electrode is a cathode, the bubble tends to be periodically detached from the pin electrode and the numerous tiny voltage spikes occur related to the electron emission from a pin cathode casing via, we judge from, direct dissociation of water molecules by energetic electrons. On the contrary, the bubble tends to stick to the pin electrode, when the pin electrode is anode; the bubble grows in size throughout the pulse duration. The dynamic electrical characteristics relative to the applied polarity of a pin electrode are presented and discussed by analysis of time averaged I-V waveforms.

Keywords

References

  1. Peter Bruggeman and Christophe Leys, "Non-thermal plasmas in and in contact with liquids," J. Phys. D: Appl. Phys., vol.42, pp.053001, 2009. https://doi.org/10.1088/0022-3727/42/5/053001
  2. Chen, Q., Li, J. & Li, Y. "A review of plasma - liquid interactions for nanomaterial synthesis," J. Phys. D. Appl. Phys. vol. 48, pp.424005, 2015. https://doi.org/10.1088/0022-3727/48/42/424005
  3. Woloszko J, Stalder K R and Brown, "Plasma characteristics of repetitively-pulsed electric discharges in saline solutions used for surgical procedures," IEEE Trans. Plasma Sci., vol.30, pp.1376-1383, 2002. https://doi.org/10.1109/TPS.2002.801612
  4. Chang-seung Ha, Eui-Jeong Son, Ju-Hong Cha, Myung Chang Kang and Ho-Jun Lee, "Energy-controlled Micro Electrical Discharge Machining for an $Al_2O_3$-carbon Nanotube Composite," J Electr Eng Technol, vol. 12, no. 6, pp. 2256-2261, 2017. https://doi.org/10.5370/JEET.2017.12.6.2256
  5. H. M. Jones and E. E. Kunhardt, "Pulsed dielectric breakdown of pressurized water and salt solutions," J. Appl. Phys., vol. 77, no. 2, pp. 795, 1995. https://doi.org/10.1063/1.359002
  6. Ravindra P. Joshi and Selma Mededovic Thagard, "Streamer-Like Electrical Discharges in Water: Part I. Fundamental Mechanisms," Plasma Chem Plasma Process, vol.33, no.1, pp.1-15, Feb. 2013. https://doi.org/10.1007/s11090-012-9425-5
  7. L. Schaper, K. R. Stalder, and W. G. Graham, "Plasma production in electrically conducting liquids," Plasma Sources Sci. Technol., vol. 20, no. 3, pp. 034004, Jun. 2011. https://doi.org/10.1088/0963-0252/20/3/034004
  8. Hung-wen Chang and Cheng-che Hsu, "Plasmas in saline solutions sustained using rectified ac voltages: polarity and frequency effects on the discharge behavior," J. Phys. D. Appl. Phys. vol. 45, no. 25, pp. 255203, Jun. 2012. https://doi.org/10.1088/0022-3727/45/25/255203
  9. Jae-Chul Jung, Il Gyo Koo,Myeong Yeol Choi, Zengqi Yu, Myung-Soo Kim and George J. Collins, "An Electrical Thrombectomy Device Using Plasma Created Chemistry in a Saline Environment to Dissolve Vascular Clots," Plasma Processes and Polymers, vol. 9, no. 5, pp. 463-467, May. 2012. https://doi.org/10.1002/ppap.201100142
  10. L. Schaper, W. G. Graham, and K. R. Stalder, "Vapour layer formation by electrical discharges through electrically conducting liquids - Modelling and experiment," Plasma Sources Sci. Technol., vol. 20, no. 3, pp. 034003, Jun. 2011. https://doi.org/10.1088/0963-0252/20/3/034003
  11. L. Schaper, C. P. Kelsey, P. Ceccato, A. Rousseau, K. R. Stalder, and W. G. Graham, "Pre- to Post-discharge Behavior in Saline Solution," IEEE Trans. Plasma Sci., vol. 39, no. 11, pp. 2670-2671, 2011. https://doi.org/10.1109/TPS.2011.2162856