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Atmospheric Pressure Plasma Treatment of Complex Interfaces
Atmospheric Pressure Plasma Treatment of Complex Interfaces
Atmospheric Pressure Plasma Treatment of Complex Interfaces

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자료유형  
 학위논문 서양
최종처리일시  
20250211152956
ISBN  
9798384043140
DDC  
530
저자명  
Konina, Kseniia.
서명/저자  
Atmospheric Pressure Plasma Treatment of Complex Interfaces
발행사항  
[Sl] : University of Michigan, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
226 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-03, Section: B.
주기사항  
Advisor: Kushner, Mark J.
학위논문주기  
Thesis (Ph.D.)--University of Michigan, 2024.
초록/해제  
요약Technologies that use atmospheric pressure plasmas play a critical role in modern life and the economy. Advances in the field of atmospheric pressure plasmas help to invent and revolutionize these technologies. As new technology devices have become more complex and operated more selectively, research in the field of atmospheric pressure plasmas has concomitantly increased the complexity of the systems. One of the directions for increasing this complexity is surface morphology. Common laws and patterns of interaction of plasmas with surfaces, particularly those with complex interface configurations of different materials, have not been formulated. To approach this problem, a set of common standard surface types have been computationally studied for this dissertation using nonPDPSIM, a 2-D plasma hydrodynamics model.Through the application of surface dielectric barrier discharges to arrays of micropores in dielectrics that can represent catalyst supports or combustion filters, common patterns in uniformity of treatment are identified. The inhomogeneous treatment is identified to be caused by the electric field enhancement at a crest of non-planar regions of the interface. Further, principles of plasma propagation to pores with the extremely small opening of a few microns are determined to be guided by the photoionization source. Within a similar setup configuration, another interface, wet microchannels, is modeled. The formation of reverse ionization waves on the channels interface when being treated by the negative polarity pulse are first identified. When channels are extended in horizontal direction having as a result a higher surface-to-volume ratio, the treatment does not necessarily lead to more efficient coverage by fluxes due to non-uniform plasma propagation along such interface. The validation of the research on microchannels is continued with another setup in which microchannels are treated with an atmospheric pressure plasma jet. Modeling results of plasma propagation are compared with collaborative experimental research. The formation of reverse ionization waves on periodic microchannel structures is again observed, modeled, and explained. Extreme cases of rectangular microchannels that are extended in vertical directions up to several millimeters, which represent hair follicles on human skin, are modeled in contact with atmospheric pressure plasma. The propagation of plasma into the reservoir of hair-follicle-like structures is then demonstrated within the model and supported with a literature search. An atmospheric pressure plasma jet is also used in contact with another interface modeling abrupt change in the height of the surface, known as step barriers. The modeling and collaborative experimental research indicate the existence of a critical height above which plasma propagation is limited. Surface kinetics on a simplified polypropylene model is implemented on a step surface. The non-uniform formation of the resulting chemicals is demonstrated on the surface following the propagation and stopping of plasma with the sensitivity of the electric field at the apexes of steps.The aim of this dissertation is to contribute to the field of atmospheric pressure plasmas with a particular focus on interaction with solid and liquid interfaces of a complex morphology. Fundamental research in this field has an impact on the development of plasma sources that can be used in medicine, catalysis or microfluidic devices. Identifying shared principles governing plasma interaction with common interfaces like micropores, microchannels, microcapillaries, and step barriers can significantly advance the field's progress.
일반주제명  
Plasma physics
일반주제명  
Nuclear engineering
일반주제명  
Particle physics
키워드  
Atmospheric pressure plasma
키워드  
Dielectric
키워드  
Surface morphology
키워드  
Microfluidic devices
키워드  
Microchannels
기타저자  
University of Michigan Nuclear Engineering & Radiological Sciences
기본자료저록  
Dissertations Abstracts International. 86-03B.
전자적 위치 및 접속  
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MARC

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■020    ▼a9798384043140
■035    ▼a(MiAaPQ)AAI31631199
■035    ▼a(MiAaPQ)umichrackham005730
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■0820  ▼a530
■1001  ▼aKonina,  Kseniia.
■24510▼aAtmospheric  Pressure  Plasma  Treatment  of  Complex  Interfaces
■260    ▼a[Sl]▼bUniversity  of  Michigan▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a226  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-03,  Section:  B.
■500    ▼aAdvisor:  Kushner,  Mark  J.
■5021  ▼aThesis  (Ph.D.)--University  of  Michigan,  2024.
■520    ▼aTechnologies  that  use  atmospheric  pressure  plasmas  play  a  critical  role  in  modern  life  and  the  economy.  Advances  in  the  field  of  atmospheric  pressure  plasmas  help  to  invent  and  revolutionize  these  technologies.  As  new  technology  devices  have  become  more  complex  and  operated  more  selectively,  research  in  the  field  of  atmospheric  pressure  plasmas  has  concomitantly  increased  the  complexity  of  the  systems.  One  of  the  directions  for  increasing  this  complexity  is  surface  morphology.  Common  laws  and  patterns  of  interaction  of  plasmas  with  surfaces,  particularly  those  with  complex  interface  configurations  of  different  materials,  have  not  been  formulated.  To  approach  this  problem,  a  set  of  common  standard  surface  types  have  been  computationally  studied  for  this  dissertation  using  nonPDPSIM,  a  2-D  plasma  hydrodynamics  model.Through  the  application  of  surface  dielectric  barrier  discharges  to  arrays  of  micropores  in  dielectrics  that  can  represent  catalyst  supports  or  combustion  filters,  common  patterns  in  uniformity  of  treatment  are  identified.  The  inhomogeneous  treatment  is  identified  to  be  caused  by  the  electric  field  enhancement  at  a  crest  of  non-planar  regions  of  the  interface.  Further,  principles  of  plasma  propagation  to  pores  with  the  extremely  small  opening  of  a  few  microns  are  determined  to  be  guided  by  the  photoionization  source.  Within  a  similar  setup  configuration,  another  interface,  wet  microchannels,  is  modeled.  The  formation  of  reverse  ionization  waves  on  the  channels  interface  when  being  treated  by  the  negative  polarity  pulse  are  first  identified.  When  channels  are  extended  in  horizontal  direction  having  as  a  result  a  higher  surface-to-volume  ratio,  the  treatment  does  not  necessarily  lead  to  more  efficient  coverage  by  fluxes  due  to  non-uniform  plasma  propagation  along  such  interface.  The  validation  of  the  research  on  microchannels  is  continued  with  another  setup  in  which  microchannels  are  treated  with  an  atmospheric  pressure  plasma  jet.  Modeling  results  of  plasma  propagation  are  compared  with  collaborative  experimental  research.  The  formation  of  reverse  ionization  waves  on  periodic  microchannel  structures  is  again  observed,  modeled,  and  explained.  Extreme  cases  of  rectangular  microchannels  that  are  extended  in  vertical  directions  up  to  several  millimeters,  which  represent  hair  follicles  on  human  skin,  are  modeled  in  contact  with  atmospheric  pressure  plasma.  The  propagation  of  plasma  into  the  reservoir  of  hair-follicle-like  structures  is  then  demonstrated  within  the  model  and  supported  with  a  literature  search.  An  atmospheric  pressure  plasma  jet  is  also  used  in  contact  with  another  interface  modeling  abrupt  change  in  the  height  of  the  surface,  known  as  step  barriers.  The  modeling  and  collaborative  experimental  research  indicate  the  existence  of  a  critical  height  above  which  plasma  propagation  is  limited.  Surface  kinetics  on  a  simplified  polypropylene  model  is  implemented  on  a  step  surface.  The  non-uniform  formation  of  the  resulting  chemicals  is  demonstrated  on  the  surface  following  the  propagation  and  stopping  of  plasma  with  the  sensitivity  of  the  electric  field  at  the  apexes  of  steps.The  aim  of  this  dissertation  is  to  contribute  to  the  field  of  atmospheric  pressure  plasmas  with  a  particular  focus  on  interaction  with  solid  and  liquid  interfaces  of  a  complex  morphology.  Fundamental  research  in  this  field  has  an  impact  on  the  development  of  plasma  sources  that  can  be  used  in  medicine,  catalysis  or  microfluidic  devices.  Identifying  shared  principles  governing  plasma  interaction  with  common  interfaces  like  micropores,  microchannels,  microcapillaries,  and  step  barriers  can  significantly  advance  the  field's  progress.
■590    ▼aSchool  code:  0127.
■650  4▼aPlasma  physics
■650  4▼aNuclear  engineering
■650  4▼aParticle  physics
■653    ▼aAtmospheric  pressure  plasma
■653    ▼aDielectric
■653    ▼aSurface  morphology
■653    ▼aMicrofluidic  devices
■653    ▼aMicrochannels
■690    ▼a0759
■690    ▼a0552
■690    ▼a0798
■71020▼aUniversity  of  Michigan▼bNuclear  Engineering  &  Radiological  Sciences.
■7730  ▼tDissertations  Abstracts  International▼g86-03B.
■790    ▼a0127
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17164386▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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