BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Penn Engineering Events - ECPv6.17.0//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:Penn Engineering Events
X-ORIGINAL-URL:https://events.engineering.upenn.edu
X-WR-CALDESC:Events for Penn Engineering Events
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:America/New_York
BEGIN:DAYLIGHT
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:EDT
DTSTART:20250309T070000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:EST
DTSTART:20251102T060000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:EDT
DTSTART:20260308T070000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:EST
DTSTART:20261101T060000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:EDT
DTSTART:20270314T070000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:EST
DTSTART:20271107T060000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260409T103000
DTEND;TZID=America/New_York:20260409T120000
DTSTAMP:20260327T165211Z
CREATED:20260327T165211Z
LAST-MODIFIED:20260327T165211Z
UID:16075-1775730600-1775736000@events.engineering.upenn.edu
SUMMARY:MSE Seminar: "Capturing Lightning - making art and discoveries! Investigating the high-speed dynamics of novel dielectric tree formation in PMMA"
DESCRIPTION:Dielectric components play an integral role in the electronic communication\, navigation\, and defense systems\, all devices which underpin daily life in our modern world. For many of these devices\, particularly those which are designed to operate in high-radiation environments like space\, space-charging and resulting dielectric breakdown present a persistent and pressing challenge for long term functionality. However\, despite constituting a primary cause of failure for these materials\, the dynamics of dielectric breakdown in bulk dielectric materials are not well understood. This is due in large part to the immense speeds at which these events occur\, making it incredibly difficult to visualize. To systematically study dielectric breakdown in dielectrics\, a novel optical delay line apparatus was developed for use in imaging this high-jitter\, extremely fast phenomena. The resulting images present the first-ever opportunity to undertake a detailed analysis of the propagation dynamics of the dielectric breakdown in poly-methyl methacrylate. The result of this work includes the identification of two distinct types of electrical tree formation\, including a previously unreported classification. More significantly\, the propagation of this novel electrical tree type was observed to exceed ten million meters per second and is believed to be the fastest physical phenomenon to ever be optically imaged in a solid material. The results of this analysis\, and the ongoing work surrounding the characterization of charge loaded dielectric materials will be presented. \nEqually passionate are his personal research pursuits; Prof. Koeth is actively engaged in the collection and preservation of early atomic age artifacts\, vintage cryptologic machines\, and classic (atomic era) Tektronix oscilloscopes. His historical work has appeared on the cover of Physics Today (May 2019) as well as featured in interviews on NPR’s Morning Edition (August 2019). Recently\, one of his artifacts has been made the centerpiece for a new exhibit\, The Dark Cube\, at the National Museum of Nuclear Science and History\, located in Albuquerque\, New Mexico.
URL:https://events.engineering.upenn.edu/event/mse-seminar-capturing-lightning-making-art-and-discoveries-investigating-the-high-speed-dynamics-of-novel-dielectric-tree-formation-in-pmma/
LOCATION:Wu & Chen Auditorium
CATEGORIES:Seminar
ORGANIZER;CN="Materials Science and Engineering":MAILTO:johnruss@seas.upenn.edu
END:VEVENT
END:VCALENDAR