Dynamics of high-speed electrical tree growth in electron-irradiated polymethyl methacrylate

• 成果类型: Article
• 署名作者: Sturge, Kathryn M.; Hoppis, Noah; Bussio, Ariana M.; Barney, Jonathan; Beaudoin, Brian; Brown, Cameron; Carlsten, Bruce; Chun, Carolyn; Clifford, Bryson C.; Cumings, John; Dallmann, Nicholas; Fitzgibbon, Jack; Frashure, Emily H.; Hammell, Ashley E.; Hannan, Jose; Henderson, Samuel L.; Hiebert, Miriam E.; Krutzler, James; Lichthardt, Joseph; Marr-Lyon, Mark; Montano, Thomas; Moody, Nathan; Mueller, Alexander; O'Shea, Patrick; Schneider, Ryan; Smith, Karl; Tappan, Bryce; Tiemann, Clayton; Walter, David; Koeth, Timothy W.
• 署名单位: University System of Maryland; University of Maryland College Park; United States Department of Energy (DOE); Los Alamos National Laboratory
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-9790
• DOI: 10.1126/science.ado5943
• 发表日期: 2024-07-19
• 页码: 300-304
• 关键词: organic polymers; charge; breakdown; propagation; dielectrics; simulation; MODEL; pmma

摘要

Dielectric materials are foundational to our modern-day communications, defense, and commerce needs. Although dielectric breakdown is a primary cause of failure of these systems, we do not fully understand this process. We analyzed the dielectric breakdown channel propagation dynamics of two distinct types of electrical trees. One type of these electrical trees has not been formally classified. We observed the propagation speed of this electrical tree type to exceed 10 million meters per second. These results identify substantial gaps in the understanding of dielectric breakdown, and filling these gaps is paramount to the design and engineering of dielectric materials that are less susceptible to electrostatic discharge failure.