Radiation Sensitivity of Adhesives and Potting Materials for Space Environments
Abstract not provided.
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Jump to search filtersRadiation Sensitivity of Adhesives and Potting Materials for Space Environments
Abstract not provided.
Radiation Sensitivity of Adhesives and Potting Materials for Space Environments
Abstract not provided.
Preliminary Results from Heavy-Ion Irradiation of the Xilinx Versal ACAP
Abstract not provided.
Gamma radiation sterilization of N95 respirators leads to decreased respirator performance
PLoS ONE
In response to personal protective equipment (PPE) shortages in the United States due to the Coronavirus Disease 2019, two models of N95 respirators were evaluated for reuse after gamma radiation sterilization. Gamma sterilization is attractive for PPE reuse because it can sterilize large quantities of material through hermetically sealed packaging, providing safety and logistic benefits. The Gamma Irradiation Facility at Sandia National Laboratories was used to irradiate N95 filtering facepiece respirators to a sterilization dose of 25 kGy(tissue). Aerosol particle filtration performance testing and electrostatic field measurements were used to determine the efficacy of the respirators after irradiation. Both respirator models exhibited statistically significant decreases in particle filtering efficiencies and electrostatic potential after irradiation. The largest decrease in capture efficiency was 40–50% and peaked near the 200 nm particle size. The key contribution of this effort is correlating the electrostatic potential change of individual filtration layer of the respirator with the decrease filtration efficiency after irradiation. This observation occurred in both variations of N95 respirator that we tested. Electrostatic potential measurement of the filtration layer is a key indicator for predicting filtration efficiency loss.
COVID-19 LDRD Project Summaries
Sandia National Laboratories currently has 27 COVID-related Laboratory Directed Research & Development (LDRD) projects focused on helping the nation during the pandemic. These LDRD projects cross many disciplines including bioscience, computing & information sciences, engineering science, materials science, nanodevices & microsystems, and radiation effects & high energy density science.
Depleted Graphene-Insulator-Silicon Junctions for High Energy Detection of Ions and Gamma Rays
Abstract not provided.
Co-60 Sterilization of PPE
We are assessing the efficacy and integrity of Personal Protective Equipment (PPE) after irradiating the PPE with gamma radiation over a three-week sprint (report should be available before April 17th)
Depleted Graphene-Insulator-Silicon Junctions for High Energy Detection of Ions and Gamma Rays
Abstract not provided.
High Energy Ion and Gamma Detection using the Graphene-Insulator-Semiconductor Junction
Abstract not provided.
Depleted Graphene-Oxide-Semiconductor Junctions for High Energy Radiation Detection
Abstract not provided.
Radiation Resistant Spot-Shielding for Microelectronic Packages Produced by Aerosol Deposition
Abstract not provided.
Graphene-Based PhotoFET for Optical and Radiation Detection
Abstract not provided.
Introduction to the Space Radiation Environment
Abstract not provided.
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