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The Utah State University Materials Physics Group (MPG) performs state-of-the-art ground-based testing of space environment effects on aerospace materials. These include electrical charging and electron transport properties of both conducting and insulating materials; they emphasize studies of electron emission, conductivity, luminescence, and electrostatic discharge. Our research group consists of faculty, graduate, and undergraduate researchers. Publications and presentations are archived here.

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2011

Effects of Micro-gravity on Thin-Wire Subcooled Nucleate Boiling Dynamics, Troy Munro, Andrew Fassmann, Heng Ban, and John R. Dennison; Effects of Micro-gravity on Thin-Wire Subcooled Nucleate Boiling Dynamics

Effects of Micro-gravity on Thin-Wire Subcooled Nucleate Boiling Dynamics, Troy Munro, Andrew Fassmann, Heng Ban, and John R. Dennison; Effects of Micro-gravity on Thin-Wire Subcooled Nucleate Boiling Dynamics

Smartphones as Integrated Kinematic and Dynamic Sensors for Amusement Park Physics Applications, Stephanie Peterson and John R. Dennison; Smartphones as Integrated Kinematic and Dynamic Sensors for Amusement Park Physics Applications

Temperature and Endurance Time of Electrostatic Field Strengths of Polymeric Spacecraft Insulators, Charles Sim, Alec Sim, and John R. Dennison; Temperature and Endurance Time of Electrostatic Field Strengths of Polymeric Spacecraft Insulators

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Electron Energy Dependent Charging Effects of Multilayered Dielectric Materials, Gregory Wilson, Amberly Evans Jensen, and JR Dennison; American Physical Society Four Corner Section Meeting

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Electron Energy Dependent Charging Effects of Multilayered Dielectric Materials, Gregory Wilson, Amberly Evans Jensen, and JR Dennison; James Webb Space Telescope Spacecraft Electrical Associated Working Group

2010

Electron Induced Luminescence of InsulatingPolymeric Materials, Douglas Ball, Alec Sim, Josh Hodges, Ryan Hoffmann, and John R. Dennison; Electron Induced Luminescence of InsulatingPolymeric Materials

It Glows! A Story of Persistence in Investigations of the Electroluminescence of JWST Composite Materials, John R. Dennison; It Glows! A Story of Persistence in Investigations of the Electroluminescence of JWST Composite Materials

Quantitative Assessment of JWST Electron-Induced Glow and Arcing Risks, John R. Dennison, Robert Meloy, and Charles Bower; Quantitative Assessment of JWST Electron-Induced Glow and Arcing Risks

The Effects of Surface Modification on Optical Properties of Spacecraft Materials, Amberly Evans and John R. Dennison; USU Student Showcase

The Effects of Surface Modification on Spacecraft Charging Parameters, Amberly Evans and John R. Dennison; American Physical Society Four Corner Section Meeting, Weber State University, Ogden, UT,

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The Effects of Surface Modification on Spacecraft Charging Parameters, Amberly Evans and John R. Dennison; Proceedings of the 11th Spacecraft Charging Technology Conference

FUNBOE – Follow-Up Nucleate Boiling On-flight Experiment: A Systematic Study of Nucleate Boiling, Jason Farnsworth, Frank McCown, and John R. Dennison; FUNBOE – Follow-Up Nucleate Boiling On-flight Experiment: A Systematic Study of Nucleate Boiling

Design of a Free-Floating Experimental System for 0-g Boiling, Andrew Fassmann, Heng Ben, and John R. Dennison; Design of a Free-Floating Experimental System for 0-g Boiling

Physical Damage Due to Electrostatic Discharge of InsulatingPolymers, Jessie Hayes, John R. Dennison, Charlie Sim, and Ryan Hoffman; Physical Damage Due to Electrostatic Discharge of InsulatingPolymers

In Situ Measurements of Electron Beam Induced Surface Voltage of Insulators, Joshua L. Hodges, Ryan Hoffmann, and John R. Dennison; In Situ Measurements of Electron Beam Induced Surface Voltage of Insulators

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Methods to Determine Total Electron-Induced Electron Yields Over Broad Range ofConductive and Nonconductive Materials, Ryan C. Hoffmann and John R. Dennison; Proceedings of the 11th Spacecraft Charging Technology Conference—2010

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Measurement Methods of Electron Emission Over a Full Range of Sample Charging, R. Hoffman and John R. Dennison; Proceedings of the 11th Spacecraft Charging Technology Conference

Electron Beam Induced Electroluminescence in SpaceBased CarbonFiber Composite Materials, Ryan Hoffman, John R. Dennison, and Todd Schneider; Electron Beam Induced Electroluminescence in SpaceBased CarbonFiber Composite Materials

A Systematic Study of Nucleate Boiling, Justin Koeln, Heng Ben, and John R. Dennison; A Systematic Study of Nucleate Boiling

A Systematic Study of Nucleate Boiling in Microgravity, Justin Koeln, Heng Ben, and John R. Dennison; A Systematic Study of Nucleate Boiling in Microgravity

Electron Beam Induced Electroluminescence in SpaceBased Carbon Fiber Composite Materials, Justin Koeln, Heng Ben, and John R. Dennison; Electron Beam Induced Electroluminescence in SpaceBased Carbon Fiber Composite Materials

Smartphones as Integrated Kinematic and Dynamic Sensors for Amusement Park Physics Applications, Stephanie Peterson and John R. Dennison; Smartphones as Integrated Kinematic and Dynamic Sensors for Amusement Park Physics Applications

A Unified Model of Charge Transport in Highly Insulating Materials, Alec Sim and John R. Dennison; A Unified Model of Charge Transport in Highly Insulating Materials

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Charge Dynamics in Highly Insulating Space Craft Materials, Alec Sim and John R. Dennison

Parameterization of Temperature, Electric Field, Dose Rate and Time Dependence of Low Conductivity Spacecraft Materials Using a Unified Electron Transport Model, Alec Sim and John R. Dennison; Parameterization of Temperature, Electric Field, Dose Rate and Time Dependence of Low Conductivity Spacecraft Materials Using a Unified Electron Transport Model

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Unified Model of Charge Transport in Insulating Polymeric Materials, Alec Sim and John R. Dennison; proceedings of the 15th Rocky Mountain NASA Space Grant Consortium

Temperature and Endurance Time of Electrostatic Field Strengths of Polymeric Spacecraft Insulators, Charles Sim, Alec Sim, Douglas Ball, and John R. Dennison; Temperature and Endurance Time of Electrostatic Field Strengths of Polymeric Spacecraft Insulators

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Approximation of Range in Materials as a Function of Incident Electron Energy, Gregory Wilson and John R. Dennison; Proceedings of the 11th Spacecraft Charging Technology Conference

2009

Time Dependent Conductivity of Spacecraft Materials, Justin Dekany and John R. Dennison; Time Dependent Conductivity of Spacecraft Materials

Reduction and Characterization of Error in Low Current Measurements, Justin Dekany, John R. Dennison, and Alec Sim; Reduction and Characterization of Error in Low Current Measurements

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Reduction and Characterization of Error in Low Current Measurements, Justin Dekany, JR Dennison, and Alec Sim; American Physical Society Four Corner Section Meeting

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Characterization of Electrical Materials Properties Related to Spacecraft Charging, John R. Dennison; Radiation capabilities for the Europa Jupiter System Missions Instrument Workshop

Testing of Materials Electrical Properties and Radiation Effects at Utah State University, John R. Dennison; Testing of Materials Electrical Properties and Radiation Effects at Utah State University

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Flight Experiments on the Effects of Contamination on Electron Emission of Materials, John R. Dennison, Joshua L. Hodges, Jeff Duce, and Amberly Evans; 1st AIAA Atmospheric and Space Environments Conference

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Engineering Tool for Temperature, Electric Field and Dose Rate Dependence of High Resistivity Spacecraft Materials, John R. Dennison, Alec Sim, Jerilyn Brunson, Steven Hart, Jodie Gillespie, Justin Dekany, Charles Sim, and Dan Arnfield; Proceedings of the 47th American Institute of Aeronautics and Astronautics Meeting on Aerospace Sciences

The Effects of Surface Contamination and Roughening on Diffuse Optical Reflection and Photoyields on Spacecraft Materials, Amberly Evans and John R. Dennison; The Effects of Surface Contamination and Roughening on Diffuse Optical Reflection and Photoyields on Spacecraft Materials

The Effects of Surface Contamination and Roughening on Diffuse Optical Reflection and Photoyields on Spacecraft Materials, Amberly Evans and John R. Dennison; The Effects of Surface Contamination and Roughening on Diffuse Optical Reflection and Photoyields on Spacecraft Materials

Space Research Projects for the International Space Station, Kyle Hodgson and John R. Dennison; Space Research Projects for the International Space Station

Flux and Fluence Dependence of Electron Emission for High-yield, High-resistivity Materials: Implications for Spacecraft Charging, Ryan Hoffmann, John R. Dennison, and Jennifer Albretsen; Proceedings of the 47th American Institute of Aeronautics and Astronautics Meeting on Aerospace Sciences

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Thin Wire Nucleate Boiling of Water in Sustained Microgravity, Justin P. Koeln, Heng Ban, and John R. Dennison; Proceedings of the 23nd Annual AIAA/USU Conference on Small Satellites

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Bubble Behavior in Nucleate Boiling Experiment Aboard the Space Shuttle, Justin P. Koeln, Jeffrey C. Boulware, and Heng Ban; 48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition

Microgravity Experiments for the ISS, Justin Koeln, Jan Sojka, and John R. Dennison; Microgravity Experiments for the ISS

Space Charging of JWST Composites, Bob Meloy and John R. Dennison; Space Charging of JWST Composites

Photoelectric Charging by Ultraviolet Light of a Lunar Dust Simulant in a Microgravity Environment, Troy Munro and John R. Dennison; Photoelectric Charging by Ultraviolet Light of a Lunar Dust Simulant in a Microgravity Environment

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Relevance of Ground-based Electron-Induced Electrostatic Discharge Measurements to Space Plasma Environments, Jennifer A. Roth, Ryan Hoffmann, John R. Dennison, and Jonathon R. Tippetts; 1st AIAA Atmospheric and Space Environments Conference

Effects of Radiation Induced Conductivity on Electrostatic Dischargein Insulating Materials, Jennifer A. Roth, Ryan Hoffman, and John R. Dennison; Effects of Radiation Induced Conductivity on Electrostatic Dischargein Insulating Materials

Charge Dynamics in Disordered Insulating Materials, Alec Sim and John R. Dennison; Charge Dynamics in Disordered Insulating Materials

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Temperature Dependence of Electrostatic Breakdown of Polymeric Insulators, Charles Sim and JR Dennison; American Physical Society Four Corner Section Meeting

2008

Adsorption Isotherms for Nitrogen (N2) on Graphite, Jennifer Albretsen, Ethan Lindstrom, and John R. Dennison; Adsorption Isotherms for Nitrogen (N2) on Graphite

Temperature Dependence of Kapton HN Breakdown Voltages, Dan Arnfield and John R. Dennison; Temperature Dependence of Kapton HN Breakdown Voltages

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Resistivity As Dynamic Behavior in Low Density Polyethylene, J. Brunson and John R. Dennison; proceedings of the 13th Rocky Mountain NASA Space Grant Consortium NASA Fellowship Symposium

Measuring Thermal Emissivity with Specific Application to Spacecraft Design, Alex Chanson and John R. Dennison; Measuring Thermal Emissivity with Specific Application to Spacecraft Design

Radiation Induced Conductivity Measurements of Insulating Materials at Low Temperatures, Jodie Corbridge, John R. Dennison, and A. Hunt; Radiation Induced Conductivity Measurements of Insulating Materials at Low Temperatures

Transient Conductivity of Kapton HN, Justin Dekany, John R. Dennison, and Steven Hart; Transient Conductivity of Kapton HN

Temperature, Electric Field and Dose Rate Dependence of the Conductivity of Highly Resistive Materials for Use on the James Webb Space Telescope, John R. Dennison; Temperature, Electric Field and Dose Rate Dependence of the Conductivity of Highly Resistive Materials for Use on the James Webb Space Telescope

The Trials and Tribulations of Measuring Electron Yields of Extreme Insulators, John R. Dennison; The Trials and Tribulations of Measuring Electron Yields of Extreme Insulators

USU JWST Induced Electrostatic Breakdown ICIM Samples, John R. Dennison; USU JWST Induced Electrostatic Breakdown ICIM Samples

Electron Yields of Highly Insulating Materials Under Varying Electron Fluence, John R. Dennison and R. C. Hoffmannn; Electron Yields of Highly Insulating Materials Under Varying Electron Fluence

Effects of Radiation Induced Conductivity on Samples Charged by Particle Beams, John R. Dennison, Ryan Hoffmannn, Jennifer A. Roth, and Alec Sim; Effects of Radiation Induced Conductivity on Samples Charged by Particle Beams

Measuring the Surface Charge on an Insulated Sample in Vacuum, Jesse Hayes, Joshua Hodges, Ryan Hoffmann, and John R. Dennison; Measuring the Surface Charge on an Insulated Sample in Vacuum

Launch and Deployment of the Misse-6 Payload: State of Utah Space Environment & Contamination Study (SUSpECS), Joshua Hodges, Jeff Duce, and John R. Dennison; Launch and Deployment of the Misse-6 Payload: State of Utah Space Environment & Contamination Study (SUSpECS)

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Launch and Deployment of the Misse-6 Payload: State of Utah Space Environment & Contamination Study, Joshua Hodges, Jeff Duce, and JR Dennison; 13th Rocky Mountain NASA Space Grant Consortium NASA Fellowship Symposium

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Low-Fluence Electron Yields of Highly Insulating Materials, Ryan Hoffmann and John R. Dennison; Proceedings of the 22nd Annual AIAA/USU Conference on Small Satellites

Observation and Characterization of Electrostatic Discharge in Insulating Materials Induced by Electron Beam Bombardment, Jennifer A. Roth, Ryan Hoffmannn, and John R. Dennison; Observation and Characterization of Electrostatic Discharge in Insulating Materials Induced by Electron Beam Bombardment

2007

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Investigating the Photoyield of Spacecraft Materials, Jennifer Albretsen, Ryan Hoffmann, and JR Dennison; American Physical Society Four Corner Section Meeting

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Hopping Conductivity in Low-Density Polyethylene, Jerilyn Brunson and John R. Dennison; Proceedings of the 12th Rocky Mountain NASA Space Grant Consortium NASA Fellowship Symposium

Charging and Discharging of Highly Resistive Spacecraft Materials, John R. Dennison; Charging and Discharging of Highly Resistive Spacecraft Materials

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LOW TEMPERATURE MEASUREMENTS OF RESISTIVITY IN LOW-DENSITY POLYETHYLENE, John R. Dennison and J. Brunson; NASA Rocky Mountaint Space Grant Consortium Symposium

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Dependence of Resistivity in Low-Density Polyethylene on Space Environment Parameters, John R. Dennison and Jerilyn Brunson; 10th Spacecraft Charging and Technology Conference

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Triggering Threshold Spacecraft Charging with Changes in Electron Emission from Materials, John R. Dennison, R. C. Hoffmann, and J. Abbott; 45th American Institute of Aeronautics and Astronomics Meeting on Aerospace Sciences, Reno, NV

Electronic property measurements and charging modeling of a ceramic-coated heat shield, M. M. Donegan, J. L. Sample, D. E. King, K. Caruso, D. Drewry, and John R. Dennison; Electronic property measurements and charging modeling of a ceramic-coated heat shield

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Deep Dielectric Charging of Spacecraft Polymers by Energetic Protons, Nelson W. Green and John R. Dennison; 10th Spacecraft Charging and Technology Conference

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Resistivity of Kapton E at Intermediate Time Scales Following High-Energy Electron Irradiation, S Hart, JR Dennison, J Brunson, and Jodie C. Gillespie; American Physical Society Four Corner Section Meeting

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Electron-Induced Electron Yields of Uncharged Insulating Materials, Ryan Carl Hoffmann, John R. Dennison, and Jennifer Albretsen; 10th Spacecraft Charging and Technology Conference

2006

From Whence Come the Electrons?, Jonathan Abbott, John R. Dennison, Jason Kite, Ryan Hoffmann, and R. E. Davies; From Whence Come the Electrons?

E-Field Conditioning and Charging Memory in Low Density Polyethylene, Jerilyn Brunson and John R. Dennison; E-Field Conditioning and Charging Memory in Low Density Polyethylene

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E-Field Dependent Conduction in Low-Density Polyethylene, Jerilyn Brunson and John R. Dennison; 11th Rocky Mountain NASA Space Grant Consortium NASA Fellowship Symposium

Measurements of the Radiation Induced Conductivity of Insulating Polymeric Materials for the James Webb Space Telescope, Jodie Corbridge, John R. Dennison, J. Hodges, R. C. Hoffmann, J. Abbott, A. Hunt, and R. Spaulding; Measurements of the Radiation Induced Conductivity of Insulating Polymeric Materials for the James Webb Space Telescope

Instrumentation for Radiation Induced Conductivity Measurements of Insulating Materials, Jodie Corbridge, J. Hodges, John R. Dennison, R. C. Hoffmann, J. Abbott, S. Hart, A. Thomas, J. Brunson, A. Hunt, and R. Spaulding; Instrumentation for Radiation Induced Conductivity Measurements of Insulating Materials

Amusement Park Physics, Ashley Crookston and John R. Dennison; Amusement Park Physics

Electron emission and resistivity of Materials for the NASA Solar Probe Mission in Extreme Thermal and Radiation Environments, John R. Dennison; Electron emission and resistivity of Materials for the NASA Solar Probe Mission in Extreme Thermal and Radiation Environments

Study of High Resistivity Materials Used for JWST at Low Temperature, John R. Dennison; Study of High Resistivity Materials Used for JWST at Low Temperature

The Charge Collector: Just a Drop in the Bucket, John R. Dennison; The Charge Collector: Just a Drop in the Bucket

Electron Emission Testing of Solar Sail Nanocomposite Materials, John R. Dennison, Jonathan Abbott, Ryan Hoffmann, and Jodie Corbridge; Electron Emission Testing of Solar Sail Nanocomposite Materials

Design and Pre-Flight Testing of the State of Utah Space Environment & Contamination Study (SUSpECS) MISSE-6 Experiment, John R. Dennison, J. W. Burns, C. D. Thomson, L. Pearson, L. Davis, R. S. Hyde, James S. Dyer, J. Duce, J. Hodges, and J. Geddes; Design and Pre-Flight Testing of the State of Utah Space Environment & Contamination Study (SUSpECS) MISSE-6 Experiment

The State of Utah Space Environment & Contamination Study (SUSpECS) MISSE-6 Experiment, John R. Dennison, James S. Dyer, J. Duce, J. Hodges, J. W. Burns, C. D. Thomson, L. Pearson, L. Pearson, L. Davis, and R. S. Hyde; The State of Utah Space Environment & Contamination Study (SUSpECS) MISSE-6 Experiment

Recent Advances in Measurements Related to the Charging and Discharging of Spacecraft Materials, John R. Dennison and Nelson Green; Recent Advances in Measurements Related to the Charging and Discharging of Spacecraft Materials

Measurement of the Electron Yields of Highly Insulating Materials, John R. Dennison, R. C. Hoffmann, and J. Abbott; Measurement of the Electron Yields of Highly Insulating Materials

The Emission Angle and Incident Energy Dependence of the Boundary between Secondary and Backscattered Electrons, John R. Dennison and Jason Kite; The Emission Angle and Incident Energy Dependence of the Boundary between Secondary and Backscattered Electrons

Electric Field Induced Hopping Conductivity: An Investigation of Electric Field-Dependent Resistivity in Polymers, S. R. Hart, J. Brunson, and John R. Dennison; Electric Field Induced Hopping Conductivity: An Investigation of Electric Field-Dependent Resistivity in Polymers

Instrumentation for Measuring Radiation Induced Conductivity of Insulating Materials, J. Hodges, Jodie Corbridge, John R. Dennison, R. C. Hoffmann, J. Abbott, A. Hunt, and R. Spaulding; Instrumentation for Measuring Radiation Induced Conductivity of Insulating Materials

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Design And Construction Of A Misse-6 Payload: State of Utah Space Environment & Contamination Study (SUSpECS), Joshua L. Hodges, Jeff Duce, and John R. Dennison; 11th Rocky Mountain NASA Space Grant Consortium NASA Fellowship Symposium

Effects of Fluence and Charge Density for Pulsed, Low-Fluence Measurements ofElectron Emission in Highly Insulating Materials, Ryan Hoffman and John R. Dennison; Effects of Fluence and Charge Density for Pulsed, Low-Fluence Measurements ofElectron Emission in Highly Insulating Materials

Measuring Auger Signatures Using a Rotatable, High-Resolution Retarding Field Analyzer Faraday Cup Detector, Jason Kite and John R. Dennison; Measuring Auger Signatures Using a Rotatable, High-Resolution Retarding Field Analyzer Faraday Cup Detector

The Effect of Voltage Ramp Rate on Dielectric Breakdown of Thin Film Polymers, Anthony Thomas, John R. Dennison, Steve Hart, and R. C. Hoffmann; The Effect of Voltage Ramp Rate on Dielectric Breakdown of Thin Film Polymers

2005

Methods for Determining Crossover Energies in Insulating Materials, Jonathan Abbott and John R. Dennison; Methods for Determining Crossover Energies in Insulating Materials

Comparison of Methods for Determining Crossover Energies in Insulators, Jonathan Abbott, Ryan Hoffmann, John R. Dennison, and Sarah Barton; Comparison of Methods for Determining Crossover Energies in Insulators

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Measuring Charge Storage Decay Time and Resistivity of Spacecraft Insulators, Jerilyn Brunson and John R. Dennison; Proceedings of the 10th Rocky Mountain NASA Fellowship Symposium

Measuring Resistivity of Extreme Insulators, Jerilyn Brunson and John R. Dennison; Measuring Resistivity of Extreme Insulators