Current Projects Microstrip Resonator Microplasma for Space Micro Propulsion This project seeks to develop a new micro propulsion system for spacecrafts, especially small satellites like Cubesats. The thruster uses a split-ring resonator to generate a microplasma, 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. A 3D printed miniature ion engine with a split-ring resonator plasma source inside was tested. Current effort are aimed at improving the plasma generation by first doing 3D measurements of the plasma. High-Pressure Microplasma Regimes and Properties 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. An atmospheric pressure He-Ar plasma can serve as the gain medium for lasers, similar to Ar-ion or HeNe lasers. These new rare gas lasers could provide very high power levels. However, at high pressure, glow plasmas are confined to millimeter or smaller scales, which make it difficult to use as a gain medium. Thus we are studying both the plasma and method to increase the plasma volume. Atmospheric-Pressure Microplasma Jet Effect on Biomatter 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 ability of the plasma jet to purify water, and treat plants, seeds, and food with partners in chemistry, agricultural science, and food science. Time-Resolved Measurements of Plasma Striations 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 detonability of certain fuels and oxidizer mixtures in rotating detonation engines (RDE). A racetrack-style RDE is currently being designed and built for this work. This work is partially funded by the NSF EPSCoR program. Subscale Deflection Magnetic Nozzle for Pulsed Fusion Propulsion This project is studying how electromagnetic fields can deflect plasmas for future application to fusion propulsion. This work is in collaboration with NASA MSFC to develop a subscale nozzle for the Pulsed Fission-Fusion advanced propulsion concept. We are currently conducting experiments to image plasma deflection in steady state magnetic fields of different geometries. The project is funded by NASA. Past Projects Atmospheric-Pressure Micro Plasma (AMP) for Nanomaterial Generation 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 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 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.