Modeling Atmospheric-Pressure Plasma and Plasma Chemistry (Fa-Gung Fan and Santokh Badesha)

Annual CAMP Technical Meeting, Canandaigua, NY, 5/19-21, 2010

Modeling Atmospheric-Pressure Plasma and Plasma Chemistry

Fa-Gung Fan* and Santokh S. BadeshaXerox Corporation

5/21/2010

* http://www.linkedin.com/in/fagungfan

Fa-Gung Fan Annual CAMP Technical Meeting, Canandaigua, NY, 5/19-21, 2010

Outline

� DC Coaxial Wire-Cylinder Corona

� DC Needle-Plate Corona

� Coplanar Dielectric Barrier Discharge (DBD) – Streamer

� RF Plasma Needle (Plasma-induced Chemistry)

Outline

Positive and Negative DC Wire-Cylinder Corona

Positive DC Wire-Cylinder Corona

Positive ion

Electron

Negative ion

3500V (at wire surface)

Ground

Number Density

Wire radius: 100 microns

Cylinder radius: 5 mm

cylinder wall

wire surface

Model domain and

computational mesh

Photoionization

Photoemission,

Secondary emission

Photoemission, Secondary emission

Ionization boundary

(E/N=120Td)

Chen and Davidson, Plasma Chem. Plasma

Process., 22, pp. 199-224, (2002)

Number Density in Ionization Region

Note: The two are similar cases, but not identical. (The model domain and the boundary conditions are different.)

Positive ion

Negative ion

Electron

(m) (micron)

wire surface

r rIonization boundary

(E/N=120Td)

Present work

Negative DC Wire-Cylinder Corona

-3000V (at wire surface)

GroundModel domain and computational mesh

Positive ion

Electron

Negative ion

Ionization boundary

(E/N=120Td)

wire surface

Plasma boundary

(E/N=80Td)

Chen and Davidson, Plasma Chem. Plasma

Process., 23(1), pp. 83-102, (2003)

wire surface

Electron

Positive ion

Negative ion

Note: The two are similar cases, but not identical. (The model domain and the boundary conditions are different.)

Ionization boundary (E/N=120Td)

wire surface

Present work

Number Density in Ionization Region

Positive and Negative DC Needle-Plate Corona

Positive DC Needle-Plate Corona

Electric Field Magnitude (surface)

Electric Field (arrows)

Electrical Potential (contour lines)

Needle (900V)

Plate (grounded)

(Axisymmetric model)

Axis of

symmetry

Positive Ion Density (surface)

Positive Ion Flux (arrows)

Electron Density and Ionization Boundary

Ionization

boundary(E/N=120Td)

Negative DC Needle-Plate Corona

Electron Density (surface)

Electron Flux (arrows)

Needle (-900V)

Plate (grounded)

(Axisymmetric model)

Axis of symmetry

Negative Ion Density (surface)

Negative Ion Flux (arrows)

Electron Density, Ionization Boundary, and Plasma Boundary

Plasma boundary

(80Td)

Ionization boundary(120Td)

Number Density of Charge Species(Negative DC Needle-Plate Corona)

Only the ionization region

Negative ion

Positive ion

Electron

Positive ion

Negative ion

z zNeedle

Needle tip

Ionization

boundary

(120Td)

Ionization boundary(120Td)

Plasma boundary

(80Td)

Negative Charge Density Profile

at the Plate

Charging Profile

(Negative Charge Flux at the Plate)

Negative ion

Electron

Negative ion

Axis of symmetry

(m) (m)

Streamer in Coplanar Dielectric-Barrier-Discharge (DBD) Corona

Ref: Gibalov and Pietsch, J. Phys. D: Appl. Phys.,

37, pp. 2082–2092 (2004)

electrode electrode

Dielectric

Electrode Configuration in a Coplanar DBD

(2D Model)

Electron Density on the Dielectric

Surface at Different Time

Electrical Potential at the Dielectric

Surface at Different Time

t (sec)

As the streamer propagating toward the cathode, the electrons generated

by the ionization deposit on the dielectric surface at the location just

above the anode (left figure). This charge build-up modifies the surface

potential of the dielectric (right figure).

The ions move slow, and the effect can be neglected in the time frame

simulated.

RF Plasma Needle andPlasma-induced Chemistry

Ref: Sakiyama and Graves, J. Phys. D: Appl. Phys., 39(16), pp. 3644-3652 (2006)

13.56MHz

Plasma Needle for Medical Application

Brok et al., J. Appl. Phys., 98, p. 013302 (2005)

Summary

� DC Coaxial Wire-Cylinder Corona

� DC Needle-Plate Corona

� Coplanar Dielectric Barrier Discharge (DBD) – Streamer

� RF Plasma Needle in He-N2 Mixture

Modeling Atmospheric-Pressure Plasma and Plasma Chemistry (Fa-Gung Fan and Santokh Badesha)

Technology

PLASMA SOURCES PLASMA SYSTEMS PLASMA APPLICATIONS RESEARCH ...€¦ · cyrannus® by plasma sources plasma systems plasma applications research & development p l a s m a e a s y t

CompSci 105 SS 2005 Principles of Computer Science Lecture 1 Lecturer: Santokh Singh

1 Lecture 14: Queues Lecturer: Santokh Singh CompSci 105 SS 2005 Principles of Computer Science

Introduction to plasma physics - limpouch/plazma/01_Intro.pdf · 1 Introduction to plasma physics Plasma definition (S. Ichimaru, Statistical Plasma Physics, Vol I) Plasma is any

KEYNOTE: Surviving Academic Research Dr Santokh Singh Research Programme Manager, Centre for Software Innovation Honorary Research Fellow, Dept of Computer

By Karman Badesha and Preet Somal. 1. Lethal Injection Lethal injection is a common way of execution in the United States. There are three types of

Developing.NET Web Service- based Architectures with Aspect-Oriented Component Engineering Santokh Singh 1, Professor John Grundy 1,2 and Professor John

STEM Center of Excellence for Services Innovation - Badesha...STEM Center of Excellence for Services Innovation ... NCM.org report on ... business skills (e.g.,

PLASMA POWER PPLASMA PLASMA SSOUND - …€¦ · PLASMA POWER PPLASMA PLASMA SSOUND Generatori per taglio al plasma Plasma cutting power sources Plasmaschneidstromquellen Générateurs

WE - dpsgrnoida.comdpsgrnoida.com/DPSGrNoida/UserSpace/UserName/dpsnadmin/DynamicFolder... · Mrs. Renu Chaturvedi Principal Delhi Public School, Greater Noida. 3 ... 53 Santokh S.Chaudhary

Air Plasma HouseWe, "Air Plasma House," Is the leading manufacturer,Distributor, Wholesaler and supplier of Plasma Cutter,Plasma Cutting Machine,Plasma Cutting Machines Manufacturers,Portable

MODELING OF INTEGRATED PLASMA PROCESSING: PLASMA PHYSICS ...uigelz.eecs.umich.edu/pub/presentations/CFDRC_0503_w_gif.pdf · MODELING OF INTEGRATED PLASMA PROCESSING: PLASMA PHYSICS,

plasma generation and plasma sources

Automating AMI Model-Generation using ESL (Electronic ... · Automating AMI Model-Generation using ESL (Electronic-System-Level) Design Flow Amolak S. Badesha Senior Application Expert

PLASMA CUTTING TECHNOLOGY / LE COUPAGE PLASMA

Sri Nanak Parkash Utraradh (Part 2) (Bhai Santokh Singh) Punjabi

Optical Plasma and Cold Oxygen Plasma SAVING.pdf · 2018-09-15 · PLASMA SAVING 빌딩 에너지 절감 20~49% 투자비회수 2년내 Optical Plasma and Cold Oxygen Plasma 빌딩

Suraj Parkash - Kavi Santokh Singh - Raas1

Plasma TelwinEnterprise Plasma 160 HF[1]

Plasma Generators - HVP.KRhvp.kr/uploaded/category/Plasma Generators.pdf · · 2017-04-10Optical Interface Others G2000 High Voltage Plasma Generator ors t a Plasma Gener Plasma