BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Penn Engineering Events - ECPv6.15.18//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:Penn Engineering Events
X-ORIGINAL-URL:https://seasevents.nmsdev7.com
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:20230312T070000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:EST
DTSTART:20231105T060000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:EDT
DTSTART:20240310T070000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:EST
DTSTART:20241103T060000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:EDT
DTSTART:20250309T070000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:EST
DTSTART:20251102T060000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240322T140000
DTEND;TZID=America/New_York:20240322T153000
DTSTAMP:20260403T193436
CREATED:20240313T143544Z
LAST-MODIFIED:20240313T143544Z
UID:10979-1711116000-1711121400@seasevents.nmsdev7.com
SUMMARY:CBE Doctoral Dissertation Defense: "A Fractal Landscape Dynamics Approach to Understanding Particle Motion in Soft Jammed Materials" (Clary Rodríguez-Cruz)
DESCRIPTION:Abstract: \n\n\n\nSoft jammed materials are disordered viscoelastic solids\, composed of densely packed particles\, that are commonly found both in the natural world and in a wide range of manufactured products. Their applications are widespread across various industries and technologies\, including food\, pharmaceuticals\, agriculture and cosmetics. Understanding the fundamental physics and mathematics behind their highly complex particle motion and distinct response to external stress is essential for their improved design and stability\, as well as the development of new materials with unique mechanical properties. Further\, it is crucial for the development of theoretical models that better describe the complex interactions and dynamics of these materials. This thesis is centered around the observation that soft jammed materials exhibit fractal landscape dynamics\, where the particles’ motion is not merely random but follows patterns influenced by the system’s underlying fractal energy landscape. Through experimental observations\, theoretical models\, and numerical simulations of ripening dense emulsions and foams\, this work reveals two major findings. First\, it demonstrates the numerical relationships between energy landscape geometry\, microscopic particle dynamics\, and macroscopic rheology through a novel high-dimensional approach. Second\, it introduces a simplistic random walk model that generates fractal paths with specified dimensions\, successfully reflecting the complex individual particle dynamics in a ripening foam after fitting to the data. This finding affirms the presence of fractal landscape dynamics as an explanation for behaviors such as non-Gaussian particle displacements\, intermittent rearrangement events\, and power-law rheology. Further exploration within this work extends the high-dimensional analysis framework to the dynamics of stock market prices\, drawing an intriguing parallel between the motion of individual stocks and emulsion droplets. Lastly\, the machine-learning metric of $\lq$softness’ is explored as a method to predict particle rearrangements in a ripening foam\, showing that simply a particle’s number of neighbors achieves a surprisingly high prediction accuracy. This thesis not only enhances our understanding of soft jammed materials but also opens new avenues for applying fractal landscape dynamics across different materials and research fields.\n\n\n\n\n\n\n\n\nZoom Link: https://upenn.zoom.us/j/94077696014?pwd=Q3hLYXBkZGVhdlloZ3oyM2NReXZyZz09\nMeeting ID: 940 7769 6014\, Passcode: 794659
URL:https://seasevents.nmsdev7.com/event/cbe-doctoral-dissertation-defense-a-fractal-landscape-dynamics-approach-to-understanding-particle-motion-in-soft-jammed-materials-clary-rodriguez-cruz/
LOCATION:217 Towne – Forman Active Learning Classroom\, 220 South 33rd Street\, Towne 217\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Doctoral,Student,Dissertation or Thesis Defense
ORGANIZER;CN="Chemical and Biomolecular Engineering":MAILTO:cbemail@seas.upenn.edu
END:VEVENT
END:VCALENDAR