Bacteria Sterilization by Laser Ablation Plasma Using Several Metal Target

Effects of pulsed laser ablation (PLA) plasma on sterilization have been studied using thin film deposition system. Yeast fungus and Spore-forming bacteria were used as the subject of sterilization, and Silver (Ag) was used as PLA target in this experiment. Experimental results suggest both of Yeast fungus and Spore-forming bacteria can be sterilization by PLA plasma irradiation. The effect of the sterilization strongly depends on the laser fluence and irradiation time. As the optical emission spectra, it is considered that main sterilization factors are high energy Ag atoms and ions, and shock wave.

[1]  Yoshiaki Suda,et al.  Effect of Oxygen Gas Pressure on Electrical, Optical, and Structural Properties of Al-Doped ZnO Thin Films Fabricated by Pulsed Laser Deposition for Use as Transparent Electrodes in All-Solid-State Electrochromic Devices , 2011 .

[2]  Yoshiaki Suda,et al.  Discharge characteristics in liquid helium preparatory to fabrication of carbon nanomaterials , 2011 .

[3]  Yoshiaki Suda,et al.  Effects of Surface Coating on Cylinder Rods Prepared Using Sputtering Deposition Method with Modulated Magnetic Field , 2010 .

[4]  Hideharu Shintani,et al.  Gas plasma sterilization of microorganisms and mechanisms of action. , 2010, Experimental and therapeutic medicine.

[5]  T. Nakashima,et al.  Sterilization of Medical Equipment Using Air Torch Plasma Produced by Microwave Discharge , 2011, IEEE Transactions on Plasma Science.

[6]  Akira Mizuno,et al.  Biological Evaluation of DNA Damage in Bacteriophages Inactivated by Atmospheric Pressure Cold Plasma , 2010 .

[7]  Gheorghe Popa,et al.  Effects of Nitrogen and Oxygen Radicals on Low-Temperature Bio-Molecule Processing , 2010 .

[8]  Yoshiaki Suda,et al.  Surface coating on the cylinder rod using sputtering deposition method with modulated magnetic field , 2011 .

[9]  Yoshiaki Suda,et al.  Preparation of a titanium thin film using a sputtering deposition process with a powder material target , 2012 .

[10]  Nobuya Hayashi,et al.  Sterilization of Medical Equipment Using Radicals Produced by Oxygen/Water Vapor RF Plasma , 2006 .

[11]  Michel Moisan,et al.  La stérilisation par plasma: méthodes et mécanismes : Plasmas froids , 2001 .

[12]  Yoshiaki Suda,et al.  Preparation of carbon nanotube on metal nano-dots substrate for gas sensor , 2011 .

[13]  W. Guan,et al.  Sterilization of Medical Equipment Using Oxygen Radicals Produced by Water Vapor RF Plasma , 2008, IEEE Transactions on Plasma Science.

[14]  Yoshiaki Suda,et al.  Plasma Processing of Functional Thin Films by Sputtering Deposition Using Metal-Based Powder Target , 2013 .

[15]  Nobuya Hayashi,et al.  Redox characteristics of thiol compounds using radicals produced by water vapor radio frequency discharge (Special issue: Plasma processing) , 2011 .

[16]  Satoshi Hamaguchi,et al.  Effects of pH on Bacterial Inactivation in Aqueous Solutions due to Low‐Temperature Atmospheric Pressure Plasma Application , 2010 .

[17]  S. Moreau,et al.  Low-temperature sterilization using gas plasmas: a review of the experiments and an analysis of the inactivation mechanisms. , 2001, International journal of pharmaceutics.