Development of Plasma Textile for Energy Efficient Nanoparticle Filtration and Bacterial Deactivation
Prof. Andrey V Kuznetsov
North Carolina State University, USA
Time & Place
Mon, 27 May 2019 14:30:00 NZST in E16 (Lecture Theatre), Engineering CORE
All are welcome
Inexpensive, flexible, washable, and durable materials that serve as antimicrobial filters and self-decontaminating fabrics are needed to provide active protection to people in areas regularly exposed to various biohazards, such as hospitals and bio research labs working with pathogens. Airlines and cruise lines need such material to combat the spread of infections. In households these materials can be used in HVAC filters to fight indoor pollution, which is especially dangerous to people suffering from asthma. Efficient filtering materials are also required in areas contaminated by other types of hazardous dust particulates, such as nuclear dust. The primary idea that guided the undertaken study is that a microplasma-generating structure can be embedded in a textile fabric to generate a plasma sheath (“plasma shield”) that kills bacterial agents coming in contact with the fabric. The research resulted in the development of a plasma textile that can be used for producing new types of self-decontaminating garments, fabrics, and filter materials, capable of activating a plasma sheath that would filter, capture, and destroy any bacteriological agent deposited on its surface. This new material relies on the unique antimicrobial and catalytic properties of cold (room temperature) plasma that is benign to people and does not cause thermal damage to many polymer textiles, such as Nomex and polypropylene. The uniqueness of cold plasma as a disinfecting agent lies in the inability of bacteria to develop resistance to plasma exposure, as they can for antibiotics. Plasma textiles could thus be utilized for microbial destruction in active antimicrobial filters (for continuous decontamination and disinfection of large amounts of air) as well as in self-decontaminating surfaces and antibacterial barriers (for example, for creating local antiseptic or sterile environments around wounds and burns). The developed filter is also much more energy efficient compared to traditional HEPA filters due to much higher permeability and hence requiring a much lesser pressure drop.
Dr. Kuznetsov is Professor at the Department of Mechanical and Aerospace Engineering at NC State University. He holds a joint professorial position at the University of North Carolina’s Biomedical Engineering Department. He has held academic posts at Ruhr-University of Bochum (Germany), Ohio State University, Vienna University of Technology, and the Russian Academy of Sciences. He is a Fellow of American Society of Mechanical Engineering, holds Associate Editorships at the ASME Journal of Heat Transfer and at the Journal of Porous Media, and is the recipient of the prestigious Humboldt Research Award. In 2014, Dr. Kuznetsov was elected as a Member of the Scientific Council of the International Center of Heat and Mass Transfer (ICHMT). He has been awarded over 3 Million ($US) from national and international agencies, including DARPA, NSF, NASA, EPA, NATO, USDA, DTRA, NTC, and Eastman Chemical.
Prof. Kuznetsov is a prolific author. He has published more than 400 journal papers, 10 book chapters, 2 books, and more than 80 conference papers. His works have been cited over 11,000 times: he has an h-index of 47 and an i10-index of over 200. While his most notable early contributions are in the development of the field of porous media, Prof. Kuznetsov’s research interests in the general area of numerical modeling are expansive, including: fluid mechanics, transport in porous media, transport in living tissues, bioheat transport, bioconvective sedimentation, Newtonian and non-Newtonian flows, flows in microgravity, and turbulence.
Prof. Kuznetsov will speak to the UC on his recent development of a revolutionary plasma bio-filter on Monday 27 May 2019.