The Physics Graduate Program invites everyone to:
Defence of M.Sc. dissertation
Patrícia Ternes Dallagnollo
Análise do estado single file da água em SWNTs mediante um modelo do tipo Frenkel-Kontorova
Defense Commitee
Prof. Dr. Evy Augusto Salcedo Torres – (president) – FSC/UFSC
Profª. Drª. Marcia Cristina Bernardes Barbosa – (external member) – IF /UFRGS
Prof. Dr. Nilton da Silva Branco – (local member) – FSC/UFSC
Prof. Dr. Wagner Figueiredo – (local member) – FSC/UFSC
Date: 21/July/2014 – thursday – Time: 10:00 am – Place: Sala 212 – Auditório do Departamento de Física
THE PHYSICS GRADUATE PROGRAM invites everyone to the seminar:
A Mode Coupling Theory for the Rheology of Colloidal Glasses
Dr. Christian P. Amann
Universität Konstanz
Abstract:
“What is a glass?” Starting from the Smulochowsky equation, mode coupling theory (MCT) is a powerful tool to approximate the collective dynamics of simple liquids near their glass transition via the dynamics of density fluctuations. It provides conceptual answers for the opening question and yields a qualitative and quantitative description of glassy dynamics in and out-of equilibrium. In this work, MCT with integration through the transient dynamics (ITT) was used to calculate the rheological response of a dense colloidal dispersion to start-up shear flow. It is possible to predict the whole range of non-monotonous stress response from the elastic,
via the transient, into the steady state (and to compare to experiments). The distortion of the structure-factor can also be calculated and a close connection between the distortion symmetry and the non-monotonous stress response is observed, which can provide an interpretation for the microscopic processes involved. The concept, applied to hard-sphere colloids, can be generalized to other short-range interaction potentials, once the equilibrium structure factor, as only input quantity needed, is provided.
Date: 11/July/2014 – (friday) – Place: Sala 212 – Auditório do Departamento de Física – Time: 10h:15min
The Physics Graduate Program invites everyone to:
Defence of M.Sc. dissertation
Bruno Clasen Hames
Polarização Intramolecular e Separação de Carga em Estruturas Supramoleculares
Defense Commitee
Prof. Dr. Luis Guilherme de Carvalho Rego – (president) – FSC/UFSC
Prof. Dr. Marcio Henrique Franco Bettega – (external member) – FSC/UFPR
Prof. Dr. Frederico Firmo de Souza Cruz – (local member) – FSC/UFSC
Prof. Dr. Clederson Paduani – (local member) – FSC/UFSC
Prof. Dr. Kahio Tibério Mazon – (supplementary member) – FSC/UFSC
Prof. Dr. Thiago de Cacio Luchese – (supplementary member) – FSC/UFFS
Date: 03/July/2014 – thursday – Time: 14:30 pm – Place: Sala 114 – Sala de Reuniões do Departamento de Física
THE PHYSICS GRADUATE PROGRAM invites everyone to the seminar:
Colisões de elétrons e pósitrons com moléculas
Prof. Dr. Marcio Henrique Franco Bettega
Depto. de Física / UFPR
Abstract:
Neste seminário apresentarei alguns resultados recentes de espalhamento de elétrons e pósitrons de baixa energia por moléculas. No espalhamento por elétrons será discutido o efeito da microssolvatação em ressonâncias de forma de natureza pi*, considerando como soluto moléculas de ácido fórmico e fenol. Para os cálculos de seções de choque foi utilizado o método multicanal de Schwinger. No caso de espalhamento por pósitrons mostrarei alguns resultados para pequenas moléculas poliatômicas, sempre comparando com dados experimentais recentes. Os cálculos de seções de choque foram realizados com o método multicanal de chwinger.
Date: 04/July/2014 – (Friday) – Place: Sala 212 – Auditório do Departamento de Física – Time: 10h:15min
