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<div class="pre" style="margin: 0; padding: 0; font-family: monospace">********************************************<br /> Secretaría Departamental de Física<br /> <a href="mailto:secre2@fisica.unlp.edu.ar">secre2@fisica.unlp.edu.ar</a><br /> Cecilia Cafiero / Alejandro Chiquino<br /> Facultad de Ciencias Exactas<br /> Universidad Nacional de La Plata<br /> ********************************************</div>
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<td>[Todos] CHARLA IFLYSIB VIRTUAL - Viernes 29/4/2022 10:30 hs - Self-assembly in mixtures with competing interactions</td>
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<td>2022-04-25 12:00</td>
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<th align="right" valign="baseline" nowrap="nowrap">Remitente:</th>
<td>Charlas IFLYSIB <charlas.iflysib@gmail.com></td>
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<th align="right" valign="baseline" nowrap="nowrap">Destinatario:</th>
<td>Charlas Iflysib <charlas-iflysib@googlegroups.com></td>
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<div dir="ltr"><strong><span style="color: #674ea7;">Dada la situación actual en relación al COVID-19, el IFLySIB realiza sus seminarios en formato virtual. Para ello, invitamos a la comunidad a participar a través del link </span></strong><a href="https://utn.zoom.us/j/89038134365">https://utn.zoom.us/j/89038134365</a></div>
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<div dir="ltr"><strong><span style="color: #674ea7;">Para acceder al espacio virtual, les pedimos que se identifiquen con su nombre a partir de 10:20hs.</span></strong></div>
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<div dir="ltr" style="text-align: center;"><strong style="color: #6aa84f;"><span style="font-size: large;">Charla IFLYSIB VIRTUAL</span></strong></div>
<div dir="ltr" style="text-align: center;"><strong style="color: #6aa84f;"><span style="font-size: large;">Viernes 29/4/2022, 10:30hs. </span></strong></div>
<div dir="ltr" style="text-align: center;"><strong style="color: #6aa84f;"><span style="font-size: small;">Link: </span></strong><strong><a href="https://utn.zoom.us/j/89038134365"><span>https://utn.zoom.us/j/89038134365</span></a></strong></div>
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<div><span style="font-size: small;"><strong><u>Título:</u> </strong> </span>
<div><strong>Self-assembly in mixtures with competing interactions</strong></div>
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<div><u><span style="font-size: small;"><strong>Expositor:</strong></span></u><strong><span style="font-size: small;"><span style="font-family: arial,sans-serif;"><br /></span></span></strong></div>
<div><strong><span style="font-size: small;"><span style="font-family: arial,sans-serif;">Alina Ciach <br /></span></span></strong></div>
<div><strong><span style="font-size: small;"><span style="font-family: arial,sans-serif;">Institute of Physical Chemistry of the Polish Academy of Sciences (</span></span>Warsaw, Poland)<span style="font-size: small;"><span style="font-family: arial,sans-serif;"></span></span></strong></div>
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<div><u><strong><span style="color: #000000;"><span></span>Resumen:</span></strong></u></div>
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<div><strong><span style="font-size: small;"><span style="font-family: arial,sans-serif;"><span style="color: rgba(0,0,0,0.79);">A binary mixture of particles interacting with spherically-symmetrical potentials leading to microsegregation is studied by theory and molecular dynamics (MD) simulations. We consider spherical particles with equal diameters and volume fractions. Motivated by the mixture of oppositely charged particles with different adsorption preferences immersed in a near-critical binary solvent, we assume short-range attraction long-range repulsion for the interaction between like particles and short-range repulsion long-range attraction for the interaction between different ones. Both theory and MD simulations show coexistence of a low-density disordered phase with a high-density phase with alternating layers rich in the first and second components. In these layers, crystalline structure is present in the solid and absent in the liquid crystals that are stable at lower and higher temperature, respectively. At the phase coexistence of the disordered and ordered phases, the density and the degree of order of the ordered phase decrease with increasing temperature, up to a temperature where the theory predicts a narrow two-phase region with increasing density of both phases for increasing temperature. MD simulations show that monocrystals of the solid and liquid crystals have a prolate shape with the axis parallel to the direction of concentration oscillations, and the deviation from the spherical shape increases with increasing periodic order.</span></span></span></strong></div>
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<div style="text-align: center;"><img style="margin-right: 0px;" src="cid:16509018766266c374e610a689268281@fisica.unlp.edu.ar" alt="image.png" width="488" height="472" /></div>
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<div>Ref.: Oksana Patsahan, Marek Litniewski and Alina Ciach. "Self-assembly in mixtures with competing interactions." <a href="https://doi.org/10.1039/D0SM02072A"><em>Soft Matter</em> 17.10 (2021): 2883-2899.</a></div>
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