Misson of our lab.

Our Laboratory aims at a fundamental study and applications of "plasma medicine", which is expected to become a next-generation medical technology, through the studies on activation and inactivation processes of cells, development of a plasma sterilization method, phenomena of reactive flow dynamics and nanoscale flow dynamics for a gas-liquid plasma and interactions between a plasma flow and cell/bacteria.

keywords: Plasma Medicine, Ultra-High-Speed Visualization, Gas-Liquid Interface, Cavitation, High-Voltage, Cell Responce


Nano-second discharge in liquid

Our lab is cralyfing the fundamental mechanism of nano-pulse discharge in water by using a ultra-high-speed camera(*1) in 100 ns order.
It is important for applications in bio-medical and enviromental fields.
(*1) A camera whose recording speed is more than 10 Mfps (100 ns per frame).


img

For details,
H. Fujita, S. Kanazawa, K. Ohtani, A. Komiya, T. Kaneko, and T. Sato
Role of Continuous Discharge Current for Secondary Streamer in Water
International Journal of Plasma Environmental Science and Technology 10 (1), 16-19 2016.

Cell responce on plasma phenomena

Plasmas can controle the cell behavoir dynamically. By using these method, it is expected to develop a novel medical applications.
We are cralyfing the details by measuring the cell responce on plasmas.



Bubble dynamics with shockwave induced by in-water discharge

Theoretical and experimental study on cavitation induced by in-water discharge for developping a novel sonoporation(*2) methods.
(*2) sonoporation: Enhancing the permeability of the cell plasma membrane by making tiny pores.


For details
O. Supponen, T. Akimura, T. Minami, T. Nakajima, S. Uehara3, K. Ohtani, T. Kaneko, M. Farhat, and T. Sato,
"Jetting from cavitation bubbles due to multiple shockwaves," Appl. Phys. Lett. 113, 193703 (2018).
https://aip.scitation.org/doi/10.1063/1.5060645M


Charge transfer in water

Clarifying a charge behavoir in liquid associated with plasma is a critical for developing plasma applications. We are developping a new method to measure the charges in water.





Collaboration research

Our lab conduct many Collaboration researches with domestic/foreign institute and companies.
Current colloborations: EPFL(Switzerland), National Chiao Tung University (Taiwan), AIST(Japan), 平山製作所(Japan) and so on.

Current colluboration results: O. Supponen, T. Akimura, T. Minami, T. Nakajima, S. Uehara3, K. Ohtani, T. Kaneko, M. Farhat, and T. Sato, "Jetting from cavitation bubbles due to multiple shockwaves," Appl. Phys. Lett. 113, 193703 (2018). https://aip.scitation.org/doi/10.1063/1.5060645