Publications by authors named "Maryann Tung"
Superlattice (SL) phase change materials have shown promise to reduce the switching current and resistance drift of phase change memory (PCM). However, the effects of internal SL interfaces and intermixing on PCM performance remain unexplored, although these are essential to understand and ensure reliable memory operation. Here, using nanometer-thin layers of GeSbTe and SbTe in SL-PCM, we uncover that both switching current density () and resistance drift coefficient () decrease as the SL period thickness is reduced (i.
View Article and Find Full Text PDFObjectives: This study examines the response of a group of volunteers in Ribeirão Preto, Brazil, as the city faced an unprecedented demand for face masks during the onset of the COVID-19 crisis in 2020. The performance of artisanal-produced masks was compared with industry equivalents.
Study Design: Case report with comparative testing.
Article Synopsis
- The text outlines evidence-based design principles for three UV-C decontamination systems specifically aimed at sterilizing N95 respirators during the SARS-CoV-2 pandemic, with a focus on practicality for low- and middle-income countries.
- Emphasis is placed on creating cost-effective solutions using readily available materials to facilitate quick implementation in under-resourced settings.
- The study details optical designs for the decontamination chambers, experiments that confirm their effectiveness, and tests showing that two popular N95 models can be safely reused after at least five decontamination cycles.