Surface morphology and carbon structure effects on sputtering: Bridging scales between molecular dynamics simulations and experiments
Experiments report large scatter in the sputtering yield of carbon materials under the
bombardment of low-energy noble gas ions. Here, we conduct scale-bridging molecular …
bombardment of low-energy noble gas ions. Here, we conduct scale-bridging molecular …
Transient to steady-state morphology evolution of carbon surfaces under ion bombardment: Monte Carlo simulations
Molecular dynamics (MD) simulations have established the sputtering yields of carbon
under the low-energy bombardment of noble gas ions. Here, we upscale these MD results to …
under the low-energy bombardment of noble gas ions. Here, we upscale these MD results to …
Persistent sputtering yield reduction in plasma-infused foams
Aluminum microfoams are found to exhibit persistent sputtering yield reductions of 40%–
80% compared to a flat aluminum surface under 100 to 300 eV argon plasma bombardment …
80% compared to a flat aluminum surface under 100 to 300 eV argon plasma bombardment …
Secondary electron emission from textured surfaces
In this work, a Monte Carlo model is used to investigate electron induced secondary electron
emission for varying effects of complex surfaces by using simple geometric constructs …
emission for varying effects of complex surfaces by using simple geometric constructs …
[PDF][PDF] Overview of the Joint AdvaNced PropUlsion InStitute (JANUS)
The Joint AdvaNced PropUlsion InStitute (JANUS) is a NASA-funded endeavor to enable
and proliferate the flight of high-power electric propulsion (EP) systems. Successful …
and proliferate the flight of high-power electric propulsion (EP) systems. Successful …
Thrust densification of space electric propulsion systems via volumetrically complex materials
GT Sabiston, RE Wirz - AIAA SCITECH 2024 Forum, 2024 - arc.aiaa.org
Thrust densification of space electric propulsion (EP) technologies is necessary to enable
future ambitious space missions and exploration, such as crewed missions to Mars. EP …
future ambitious space missions and exploration, such as crewed missions to Mars. EP …
In situ plasma sputtering and angular distribution measurements for structured molybdenum surfaces
We present in situ sputtering yield measurements of the time-dependent erosion of flat and
micro-architectured molybdenum samples in a plasma environment. The measurements are …
micro-architectured molybdenum samples in a plasma environment. The measurements are …
Charge and discharge behavior of elemental sulfur in isochoric high temperature thermal energy storage systems
Thermal energy storage with elemental sulfur is a low-cost alternative to molten salts for
many medium to high-temperature energy applications (200–600° C). In this effort, by …
many medium to high-temperature energy applications (200–600° C). In this effort, by …
Fluence-dependent sputtering yield of micro-architectured materials
CSR Matthes, NM Ghoniem, GZ Li, TS Matlock… - Applied Surface …, 2017 - Elsevier
We present an experimental examination of the relationship between the surface
morphology of Mo and its instantaneous sputtering rate as function of low-energy plasma ion …
morphology of Mo and its instantaneous sputtering rate as function of low-energy plasma ion …
[HTML][HTML] Ion-induced electron emission reduction via complex surface trapping
A Monte Carlo model is developed and validated to understand the ion-induced electron
emission (IIEE) characteristics of complex surfaces and to show the importance of using …
emission (IIEE) characteristics of complex surfaces and to show the importance of using …