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ENGR 4390 Intro to Plasma Engineering
Shawn Robinson
10/30/13
 Forth state of Matter
 Gas Breakdown
 Ions
 Electrons
 Reactive Species
 Neutral Atoms
 Thermal Vs. Non-Thermal
 AC/DC
 Pressure Conditions
 Neutral Atom Used
Plasma Jet
Configuration(above)
Corona Discharge (left)
 Microbes in High Orbit
 4.9 x 10(4) cells/ml
 No Human resistance
 Need to reduce colony
 Closely related to
pathogenic species
Live cells(green)
damaged cells
(orange) brought
back from high
altitude
 Plasma deposited silicon oxide films are found to
increase the permeation barrier of packaging
materials.
 Polyethylene terephthalate (PET) is an important
polymer for packaging applications and is
established for various kinds of packaging
solutions like bottles, containers, or foils
 CCP, Microwave power is applied pulsed
within 1 ms ≤ ton ≤ 24 ms
 volume of up to 6 L
 Plasma consisting of hydrogen, nitrogen, and
oxygen
 SiOx layer
 Repeated use for sterilization
 Deposit layers or kill cells
 Shuttles entering and leaving the atmosphere
can collect these microbes
 To reduce the chances of contamination
protective coating can be applied
 Plasma sheet coatings
 The thermal spray is atmospheric microwave
plasma that operates at 2.46 GHz
 Argon and Nitrogen (primary gas)
 Hydrogen and Helium (secondary gas)
 Deposit layers without damaging parts
 Deposition rates are very high in comparison
to alternative coating technologies
tungsten (melting point 3400°C) is
sprayed onto aluminum (melting
point 660°C) without melting the
aluminum
 Plasma has very many applications in space
 Save Money
 Protect Health
Plasma Sterilization and Safety for Space Industry

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Plasma Sterilization and Safety for Space Industry

  • 1. ENGR 4390 Intro to Plasma Engineering Shawn Robinson 10/30/13
  • 2.  Forth state of Matter  Gas Breakdown  Ions  Electrons  Reactive Species  Neutral Atoms
  • 3.  Thermal Vs. Non-Thermal  AC/DC  Pressure Conditions  Neutral Atom Used Plasma Jet Configuration(above) Corona Discharge (left)
  • 4.  Microbes in High Orbit  4.9 x 10(4) cells/ml  No Human resistance  Need to reduce colony  Closely related to pathogenic species Live cells(green) damaged cells (orange) brought back from high altitude
  • 5.  Plasma deposited silicon oxide films are found to increase the permeation barrier of packaging materials.  Polyethylene terephthalate (PET) is an important polymer for packaging applications and is established for various kinds of packaging solutions like bottles, containers, or foils
  • 6.  CCP, Microwave power is applied pulsed within 1 ms ≤ ton ≤ 24 ms  volume of up to 6 L  Plasma consisting of hydrogen, nitrogen, and oxygen
  • 7.  SiOx layer  Repeated use for sterilization  Deposit layers or kill cells
  • 8.  Shuttles entering and leaving the atmosphere can collect these microbes  To reduce the chances of contamination protective coating can be applied  Plasma sheet coatings
  • 9.  The thermal spray is atmospheric microwave plasma that operates at 2.46 GHz  Argon and Nitrogen (primary gas)  Hydrogen and Helium (secondary gas)
  • 10.  Deposit layers without damaging parts  Deposition rates are very high in comparison to alternative coating technologies tungsten (melting point 3400°C) is sprayed onto aluminum (melting point 660°C) without melting the aluminum
  • 11.  Plasma has very many applications in space  Save Money  Protect Health