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SUMMARY:Electric Field-Induced Structural Transitions in Ionic Microgels P
 robed by Small-Angle Neutron Scattering
DTSTART:20250602T123000Z
DTEND:20250602T133000Z
DTSTAMP:20260716T172000Z
UID:indico-event-577@indico.frm2.tum.de
CONTACT:Nicolas.Walte@frm2.tum.de\;d.saha@fz-juelich.de\;Jitae.Park@frm2.t
 um.de
DESCRIPTION:Speakers: BRIJITTA JOSEPH BONIFACE (JCNS)\n\nPoly(N-isopropyla
 crylamide) (PNIPAM) microgels represent a versatile class of soft matter s
 ystem that provides unique opportunities to investigate cooperative phenom
 ena such as phase transitions\, structural ordering\, and self-assembly. I
 n this talk\, I will present our study on the AC electric field-induced di
 rected assembly of ionic PNIPAM-co-acrylic acid (PNIPAM-co-AAc) microgels 
 from dilute to overcrowded conditions\, using small-angle neutron scatteri
 ng (SANS) in a zero-average contrast (ZAC) solvent. The field-induced resp
 onse of the microgels was found to vary significantly with cross-linking d
 ensity. Depending on the electric field strength\, we observed transformat
 ions such as compression in loosely cross-linked microgels\, interpenetrat
 ion in moderately cross-linked ones\, and shape anisotropy in highly cross
 -linked microgels. These structural adaptations highlight the interplay be
 tween microgel elasticity and external fields for designing field-responsi
 ve colloidal systems and adaptive soft materials.\n\nhttps://indico.frm2.t
 um.de/event/577/
LOCATION:PH HS 3 (Physics Department)
URL:https://indico.frm2.tum.de/event/577/
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