Current Projects

Microstrip Resonator Microplasma for Space Micro Propulsion 

   SRR on argon  SRR Ion Thruster   SRR Ion Thruster firing

This project seeks to develop a new micro propulsion system for spacecrafts, especially small satellites like Cubesats. The thruster uses a microstrip resonator to generate a plasma, a method not yet seen in propulsion. The thruster promises low power, low mass, and low cost, all of which make it very attractive for the small satellite market. The research currently looks to understand how the resonator parameters affects the generated microplasma and how that can improve the thrust and specific impulse of a thruster. So far we have designed, built, and tested a miniature ion engine using the resonator as the plasma source inside.

 

High-Pressure Microplasma Regimes and Properties

dprgl 1   dprgl 2

This project is in collaboration with the SMAP Center and funded by the Army SMDC. The project seeks to understand the regime transition and the properties of arc, streamer, glow, and corona in a near atmospheric pressure rare gas discharge. 

 

Atmospheric-Pressure Microplasma Jet Effect on Biomatter

jet flytrap flowerstumeric4 jet arraymethyl blue dye clean 05282019

This project is part of a 5-year $20 million statewide NSF EPSCoR program to study a range of plasma science and applications. Some example applications include low temperature plasma treatment of plants, seeds, and food products for beneficial applications such as decontamination, disease treatment, fungicide, and protective coatings. We are also studying the abiltiy of the plasma jet to purifity water and breakdown organic contanminants. 

Time-Resolved Measurements of Plasma Striations

striation 1   1 torr lcif

This project studies the formation and behavior of plasma striations in low pressure plasmas. Striations are localized packets of ions and electrons which can move or stand still. We use probe and optical diagnostics to study the formation and propagation of these striations in a dc discharge. This work is part of the NSF EPSCoR program.

Transient Plasma Enhancement of Rotation Detonation Engines

This project seeks to apply nanosecond pulsed plasma discharges to control and improve the detonabiliy of certain fuels and oxidzier mixtures in rotating detonation engines (RDE). A racetrack-style RDE is currently being designed and built for this work.

Past Projects

Atmospheric-Pressure Micro Plasma (AMP) for Nanomaterial Generation

AMP TC 75W copy    AMP deposites 2    spherical cu particle graphite pin on copper 20160519

This project seeks to understand the behavior of microplasmas at atmospheric pressures. Due to the greatly increased pressure and thus particle density compared to more conventional vacuum plasmas, some of the basic interactions changes. One example is the plasma is very collisional and gas temperatures can be close to room temperature. One aspect of this research is developing the diagnostic tools to measure the plasma properties which are required to understand the plasma behavior and interactions. Application-wise, we seek to use these microplasmas for the controlled and pre-determined synthesis of nanomaterials over large areas and understand the physics that control the material formation.

 

Electric Field Modified Combustion

  Concentric burner  Ion current contours

bunsen flame 9.1 kv

This work is part of the field called Plasma Assisted Combustion (PAC) where plasma and electromagnetic fields are used to modified by the combustion process and the flame behavior. Some of the effects include increase flame speed, increase flame height, reduced turbulence, and ultra lean combustion. This project has evolved from DC fields on a flat flame burner to electric field effects with a pentad rocket injector in a closed combustion can. It is a blend of plasma, combustion, and propulsion.

 

Additive Manufactured Miniature Hall Thruster

imgp5549    imgp5550

This project seeks to design, built, and test a 3D printed miniature Hall thruster with a CubeSat foot print. The use of 3D printing allows more complex structures to be built, allow propellant and cooling channels to be printed directly into the thruster, and can reduce material and mass with lattice structures. Our initial prototype is build from ABS plastic using a commercial desktop 3D printer at the lab. In total there are 10 major parts of the thruster as the main body, discharge channel, and propellant distributor are build as a single piece, greatly simplifying fabrication and assembly.