Aerosol-assisted cold plasma technology from terraplasma for disinfecting surfaces reaches important milestone

Cold atmospheric plasma (cold plasma for short) is already proving its effectiveness in the treatment of chronic and acute wounds by reducing microorganisms without contact or chemicals. Viruses, fungi and bacteria, including multi-resistant pathogens (MRE), are efficiently and sustainably destroyed by cold plasma. It therefore made sense to extend this active principle to other areas of application, such as the disinfection of objects and surfaces. With a prototype called "tpTop", a handy and mobile cold plasma decontamination device with aerosol support, it has now been possible to deactivate up to 99.9% of microorganisms within a few seconds of treatment. This opens up new application possibilities for the future, such as the fast and sustainable disinfection of surfaces of all kinds.

Chemical-free disinfection of surfaces is a major challenge

Cold plasma has a germ-reducing effect – completely without chemicals, heat, radiation or UV – and is therefore particularly suitable for sensitive objects that cannot be freed from microorganisms using the conventional methods mentioned above. In addition, cold plasma is created in a sustainable and natural cycle and is generated from normal ambient air with the targeted addition of a little energy. As soon as the energy supply is stopped, the Cold Plasma turns back into normal room air and leaves no waste products behind.

Since physical mechanisms of action are also used against microorganisms (the microorganisms are literally “drilled open” by the cold plasma – see press images), there is also no resistance to the increasingly dangerous MREs such as the well-known ESKAPE germs. These include

  • Vancomycin-resistant Eenterococci (VRE)
  • Methicillin-resistant Staphylococcus aureus (MRSA)
  • Carbapenem-resistant Klebsiella pneumoniae
  • Acinetobacter baumannii
  • Pseudomonas aeruginosa
  • Enterobacterales (extended-spectrum beta-lactamase formers/ESBL)

Aerosol acts as a "booster" for the disinfection performance

PM MRE terraplasma 2024 05 17 tpTop2

As an invisible gas, cold plasma gets into even the smallest crevices of an object or surface to be decontaminated – unlike UV, for example, there are no shadows. However, this unstable gas dissipates quite quickly and is therefore most effective when used in an enclosed treatment room such as a mobile object disinfection unit like the CBC PlasmaEgg from Kimetec.

By using a water-based aerosol (a very fine water mist) in addition to cold plasma, terraplasma has now been able to significantly speed up the decontamination process: it previously took several minutes to achieve deactivation of 99.9% of microorganisms, but this result is now achieved in just a few seconds. The aerosol enables significantly more efficient distribution and targeted application of the so-called “reactive species” (active substances) of the plasma to the areas to be disinfected. This speeds up the overall process and makes it ideal for the fast and efficient disinfection of surfaces in seconds.

Looking for partners for the further development of this universally applicable rapid disinfectant

By using the “tpTop” prototype, terraplasma was able to successfully test and trial a concept for disinfecting (irregular) surfaces within a very short time using cold plasma for the first time. The promising results motivate the terraplasma team to continue testing this topic and to develop an optimised setup for disinfection – preferably with a partner company with experience in the fields of cleaning and hygiene, as terraplasma’s technology can be used as a complementary technology in various cleaning devices such as vacuum cleaning robots or floor cleaning machines due to its compact design and low power consumption.

Short Notice

Impressions from BayOConnect 2024 in Munich

“replacing chemicals. the sustainable way.” Under this motto, the innovation leader from Garching near Munich promotes the many different possible uses of cold plasma technology in the areas of biotech and life science. Cold plasma is perfect for replacing conventional disinfection solutions with chemicals, UV, heat or radiation, for example, and thus enables true sustainability. An excellently suitable platform is the BayOConnect 2024 event, in which terraplasma actively participated as speaker and exhibitor.

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Event notice

Cold plasma, biotech and life science: terraplasma shows sustainable innovations in Munich

“replacing chemicals. the sustainable way.” Under this motto, the innovation leader from Garching near Munich promotes the many different possible uses of cold plasma technology in the areas of biotech and life science. Cold plasma is perfect for replacing conventional disinfection solutions with chemicals, UV, heat or radiation, for example, and thus enables true sustainability. An excellently suitable platform is the BayOConnect event, in which terraplasma actively participates as an exhibitor.

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Press release

Effective against PFAS: terraplasma successfully tests its own cold plasma technology for water treatment

Successful initial attempts to treat drinking water contaminated with PFAS: this is how terraplasma, the innovation leader in the area of development and implementation of applications with cold atmospheric plasma (in short: cold plasma or cold plasma), succeeded with its self-developed energy-saving cold plasma technology for water treatment alongside other substances such as For example, microorganisms and PFAS can be significantly reduced in a measurable way. In a first, larger series of tests with real water samples from a southern Bavarian PFAS hotspot, some of the so-called “forever chemicals” were reduced by up to almost 30%. Reason enough for the company to further optimize its technology and, together with potential partners, develop it into a ready-made solution for water treatment.

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