Environmental Applications of Plasmas

With recent advances in nanotechnology, "plasma" has now become a part of our every day lexicon (plasma televisions, etc.), but what is a plasma and what kinds of applications might they have for the environment? A plasma is the fourth state of matter, consisting of highly active charged gas particles. The highly active species present in plasmas (for example hydroxyl radicals and molecular oxygen, and uv light) present a promising means of sterilization of harmful microbes and/or contaminant destruction. Collaborators at CSU (Professor George Collins, Electrical and Computer Engineering) have developed a hollow-slot atmospheric plasma that we have demonstrated to be highly effective in sterilizing bacteria. A similar device has also been tested for its capability to degrade organic contaminants.

Thank you to Colorado Institute of Technology for Supporting this Research!!!

24 inch hollow slot plasma device (instrument off) plasma plume (instrument on) Fire in Water! video.
 
E. coli cells prior to exposure to plasma. E. coli cells exposed to plasma plasma plume for 0.24 seconds  

Student Working on this Project:

Ashish Sharma, Ph.D. Candidate (Co-advised with Dr. Collins)

M.S. Colorado State University, Elec. Eng.
B.S. Electronics and Power Engineering, Nagpur University, India

Peer-Reviewed Publications:

Conference Proceedings: