BEGIN:VCALENDAR
VERSION:2.0
METHOD:PUBLISH
CALSCALE:GREGORIAN
PRODID:-//WordPress - MECv6.4.2//EN
X-ORIGINAL-URL:https://www.lps.u-psud.fr/
X-WR-CALNAME:Laboratoire de physique des Solides
X-WR-CALDESC:
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-PUBLISHED-TTL:PT1H
X-MS-OLK-FORCEINSPECTOROPEN:TRUE
BEGIN:VEVENT
CLASS:PUBLIC
DTSTART;TZID=Europe/Paris:20250611T140000
DTEND;TZID=Europe/Paris:20250611T150000
DTSTAMP:20250604T081400
UID:MEC-6e3b0bf8b7d5956ae572b15cd7ddb0e1@lps.u-psud.fr
CREATED:20250604
LAST-MODIFIED:20250611
PRIORITY:5
TRANSP:OPAQUE
SUMMARY:Séminaire Daniela Kraft (Leiden University)
DESCRIPTION:Active particles with anisotropic shape and flexibility\n \nBiological microorganisms rely on their shape to create and direct their motion. In contrast, experimental realizations of synthetic self-propelled systems are currently mostly spherical and rigid. These experimental limitations preclude a fundamental understanding of how anisotropic shape and conformational flexibility affect a microswimmer’s individual and collective behavior. \nIn this talk, I will demonstrate that 3D microprinting can be exploited to create anisotropic synthetic microswimmers of virtually any shape, from spheres with spikes to microscopic boats.[1] Using this technique to print a class of anisotropic particles ranging from spheres to bent and straight rods, I will demonstrate that cluster formation can be dramatically enhanced by an anisotropic swimmer shape.  We find that the clustering dynamics is governed by a single scaling parameter that depends on particle density and shape only, due to an interplay between interlocking probability and cluster stability. [2] Finally, I will show the complex and intriguing behavior that is obtained when combining activity with flexibility. Our work provides key insights into how shape can be used to rationally design out-of-equilibrium self-organization, which is key to creating active functional materials.\n \n[1] R.P. Doherty, T. Varkevisser, M. Teunisse, J. Hoecht, S. Ketzetzi, S. Ouhajji, D. Kraft, Catalytically propelled 3D printed microswimmers, Soft Matter, DOI: 10.1039/d0sm01320j (2020); Highlighted in Nature News in Brief, 587, p. 527 (2020) and chosen as one of the “Images of the Year 2020” in Nature (Dec 2020); covered by media and news globally\n[2] S. Riedel, L. Hoffmann, L. Giomi, D. Kraft, Designing highly efficient interlocking interactions in anisotropic active particles, Nature Communications, (2024)\n\n\n\n
URL:https://www.lps.u-psud.fr/events/seminaire-daniela-kraft/
CATEGORIES:Séminaire Matière Molle Phys-Bio
LOCATION:Orsay
END:VEVENT
END:VCALENDAR