<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div class="" style="margin: 0px; font-stretch: normal; line-height: normal;"><font face="HelveticaNeue" class="">Dear Soft Matter Colleagues and Friends,</font></div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal; min-height: 14px;"><font face="HelveticaNeue" class=""><br class=""></font></div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal;"><font face="HelveticaNeue" class="">On Friday 28 May 2021 at 9:30 AM we are hosting a seminar during which</font></div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal; min-height: 14px;"><font face="HelveticaNeue" class=""><br class=""></font></div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal;"><font face="HelveticaNeue" class=""><b class="">Lyndon Koens </b>(Macquarie University, Melbourne, Australia)</font></div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal; min-height: 14px;"><font face="HelveticaNeue" class=""><br class=""></font></div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal;"><font face="HelveticaNeue" class="">will give a talk</font></div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal; min-height: 14px;"><b class=""><span lang="EN-US" class=""><font face="HelveticaNeue" class=""><br class=""></font></span></b></div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal; min-height: 14px;"><b class=""><font face="HelveticaNeue" class="">Generalising geometric swimming for viscous flow</font></b></div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal; min-height: 14px;"><b class=""><font face="HelveticaNeue" class=""><br class=""></font></b></div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal;"><b class=""><font face="HelveticaNeue" class="">Abstract</font></b></div><div class="" style="text-align: justify; margin: 0px; font-stretch: normal; line-height: normal;"><div class="" style="text-align: start;"><span style="caret-color: rgb(68, 68, 68); color: rgb(68, 68, 68); text-align: justify; background-color: rgb(255, 255, 255);" class=""><font face="HelveticaNeue" class="">The geometric phase techniques for swimming in viscous flows express the net displacement of a swimmer as a path integral of a field in configuration space. This representation can be transformed into an area integral for simple swimmers using the Stokes theorem. Since this transformation applies for any loop, the integrand of this area integral can be used to help design these swimmers. However, the extension of this Stokes theorem technique to more complicated swimmers is hampered by problems with variables that do not commute and by how to visualise and understand the higher-dimensional spaces. In this talk I will introduce you to the general geometric swimming process and then develop novel methods to approach non-commuting variables and the visualisation of high dimensional spaces. In do so we will discuss the implications for our understanding of microscopic swimming and outline how it could be used to help with the design of swimmers.</font></span></div></div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal; min-height: 14px;"><font face="HelveticaNeue" class=""><br class=""></font></div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal;"><font face="HelveticaNeue" class="">The seminar will be conducted on Zoom</font></div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal;"><div class="" style="margin: 0px; font-stretch: normal; line-height: normal;"><a href="https://us02web.zoom.us/j/82784273907" class=""><font face="HelveticaNeue" class="" color="#0433ff">https://us02web.zoom.us/j/82784273907</font></a></div></div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal;"><font face="HelveticaNeue" class="">and will begin at <b class="">9:30AM</b>. </font></div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal; min-height: 14px;"><font face="HelveticaNeue" class=""><br class=""></font></div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal;"><font face="HelveticaNeue" class="">Maria Ekiel-Jeżewska</font></div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal;"><font face="HelveticaNeue" class="">Maciej Lisicki</font></div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal;"><font face="HelveticaNeue" class="">Marek Napiórkowski</font></div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal;"><font face="HelveticaNeue" class="">Piotr Szymczak</font></div><div class=""><font face="HelveticaNeue" class=""><br class="Apple-interchange-newline">
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