<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div style="font-family: HelveticaNeue;"><font face="HelveticaNeue">Dear Soft Matter & Complex Systems Colleagues and Friends,</font></div><div style="font-family: HelveticaNeue;"><font face="HelveticaNeue"><br></font></div><div style="font-family: HelveticaNeue;"><div><font face="HelveticaNeue">On Friday 15 December 2023 at 9:30 AM at the UW Faculty of Physics (Pasteura 5, Warsaw; room 1.40) we are hosting the last seminar of this calendar year. Our speaker will be</font></div><div style="margin: 0px; font-stretch: normal; line-height: normal; min-height: 14px;"><b><br></b></div><div style="margin: 0px; font-stretch: normal; line-height: normal; min-height: 14px;"><font face="HelveticaNeue"><b>Piotr Surówka </b>(</font>Institute of Theoretical Physics, Wrocław University of Science and Technology)</div><div style="margin: 0px; font-stretch: normal; line-height: normal; min-height: 14px;"><font face="HelveticaNeue"><br></font></div><div style="margin: 0px; font-stretch: normal; line-height: normal;"><font face="HelveticaNeue">who will give a talk</font></div><div style="margin: 0px; font-stretch: normal; line-height: normal; min-height: 14px;"><span style="caret-color: rgb(68, 68, 68);"><br></span></div><div style="margin: 0px; font-stretch: normal; line-height: normal; min-height: 14px;"><div><b>Odd Viscoelasticity</b></div><div><br></div><h2 style="margin: 6px 0px 12px; padding: 0px; caret-color: rgb(68, 68, 68);"><b style="font-size: 12px;">Abstract</b></h2><div>Active matter encompasses systems that are not in equilibrium, consisting of elements that either consume energy or exert work. Consequently, their macroscopic characteristics diverge significantly from those predicted by continuum field theories based on equilibrium statistical mechanics. Recent advancements in active matter research have prompted a reevaluation of the fundamental principles of materials science. This has led to the development of a novel theoretical framework known as odd (visco)elasticity. Traditional elasticity treats solids as continuous media that change shape in response to external forces. On a microscopic scale, applying force to a crystalline structure displaces its atoms, which then exert a counterforce to regain the crystal's original configuration. However, this dynamic is fundamentally altered in active odd materials, where the response to applied forces includes not only compression or deformation but also deflection. In this presentation, I will provide an overview of the recent advancements in this field.</div></div><div style="margin: 0px; font-stretch: normal; line-height: normal;"><div style="margin: 0px; font-stretch: normal; line-height: normal;"><div style="margin: 0px; font-stretch: normal; line-height: normal;"><div style="margin: 0px; font-stretch: normal; line-height: normal;"><div style="margin: 0px; font-stretch: normal; line-height: normal;"><br></div></div></div></div></div><div style="margin: 0px; font-stretch: normal; line-height: normal;"><font face="HelveticaNeue">We warmly welcome everyone to attend the talk and the Soft Matter Coffee Break after the seminar, held in room 2.63 (2nd floor).</font></div><div style="margin: 0px; font-stretch: normal; line-height: normal;"><font face="HelveticaNeue">After this event, our seminars will resume on 12 January 2024.</font></div></div><div style="font-family: HelveticaNeue;"><font face="HelveticaNeue"><br></font></div><div style="font-family: HelveticaNeue;"><div dir="auto" style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div style="margin: 0px; font-stretch: normal; line-height: normal;"><font face="HelveticaNeue">Maria Ekiel-Jeżewska</font></div><div style="margin: 0px; font-stretch: normal; line-height: normal;"><font face="HelveticaNeue">Maciej Lisicki</font></div><div style="margin: 0px; font-stretch: normal; line-height: normal;"><font face="HelveticaNeue">Piotr Szymczak</font></div><div style="margin: 0px; font-stretch: normal; line-height: normal;"><font face="HelveticaNeue">Panagiotis Theodorakis</font></div><div style="margin: 0px; font-stretch: normal; line-height: normal;"><font face="HelveticaNeue">Marek Trippenbach</font></div></div></div><br></body></html>