El programa de Posgrado en Fisica invita a todos para la:

Sustentación de Tesis

Marcos Vinicios Barp

ESPALHAMENTO DE PÓSITRONS POR ÁTOMOS E MOLÉCULAS DE CAMADA ABERTA

Jurados:

Prof. Dr. Felipe Arretche (presidente) – UFSC/FSC

Prof. Dr. Wagner Tenfen (miembro externo) – UFPEL

Prof. Dr. Roberto Kalbusch Saito (miembro titular) – UFSC/FSC

Prof. Dr. Tiago José Nunes da Silva (membro titular) – UFSC/FSC

Prof. Dr. José Rafael Bordin (miembro suplente) – ICE/UFMG

Prof. Dr. Kahio Tiberio Mazon (miembro suplente) – UFSC/FSC

Fecha: 11 de novimebre de 2022 – viernes – Horario: 2:00 pm – Lugar: sala virtual Conferência Web de la Rede Nacional de Ensino e Pesquisa (RNP)

Enlace de acceso a sala virtual: https://conferenciaweb.rnp.br/conference/rooms/felipe-99/invite

EL PROGRAMA DE POSGRADO EN FÍSICA invita a todos para lo seminario:

Analytically Solvable Problems in Quantum Mechanics and SWKB Quantization Condition

Yuta Nasuda

Tokyo University of Science

Resumen:

The Schrödinger-type equation appears not only in quantum mechanics but also in every corner of physics. It has long been studied what the basic feature of solvable potentials is, and how one solves the equation with those potentials analytically. Today we know infinitely many solvable potentials, but we still have no whole notion of the solvability of the Schrödinger equation. In this seminar, we first review several essential concepts in the solvability of the Schrödinger equation: factorization of Hamiltonian, shape invariance, and so on. Then we introduce the SWKB quantization condition, which is relevant to the solvability of the Schrödinger equation. We apply the condition to several solvable problems and show how they are closely connected.

Fecha: 11 de noviembro de 2022 – (viernes) – Horário: 10:15 a.m.

Local: Auditório do Departamento de Física

EL PROGRAMA DE POSGRADO EN FÍSICA invita a todos para lo seminario:

Optical spectroscopy: from a luminescent molecule to working OLED devices

MSc Larissa Gomes França

Department of Physics , Durham University – UK

Resumen:

Organic light-emitting diodes (OLEDs) have attracted tremendous interest from the luminescent display industry over the last years. Nowadays, this technology is already a part of peoples’ lives as being used in everyday items such as in mobile phones and televisions. Using organic semiconductors instead of the more traditional inorganic (i.e. GaN, InGaN, GaAs, etc.) introduces many technological advantages. Among them are flexibility, very low thickness of final luminescent displays as well as possibility to produce transparent displays and luminaries. In an OLED device, applied voltage bias induces injection of electrons and holes through the device cathode and anode, respectively. The charge carriers are transported through the device and migrate to the emissive layer where they recombine, generating light. Spin statistics based on the spin states of holes and electrons undergoing recombination leads to a 1:3 ratio between multiplicities of thus produced excited states: singlets and triplets. Considering that often triplet states do not contribute to the luminescent output of an OLED the efficiency of these devices becomes limited to 25% of what it could be. Mechanisms that enable turning non-emissive triplet states into luminescent singlets will be discussed in this talk. Key parameters to maximise efficiency of these mechanisms allowing 100% utilisation of all electron-hole recombination will also be covered.

Fecha: 4 de noviembro de 2022 – (viernes) – Horário: 10:15 a.m. 

Local: Auditório do Departamento de Física

EL PROGRAMA DE POSGRADO EN FÍSICA invita a todos para lo seminario:

Insights into Publishing at the Nature Portfolio, Open Access, and Demystifying the Editorial Process

Dr. Gustavo Tontini

Associate Editor, Nature Communications-Springer Nature

Resumen:

Dr Gustavo Tontini is an Editor at Nature Communications, an open access, multidisciplinary journal dedicated to publishing high-quality impactful research in all areas of the biological, health, physical, chemical, and Earth sciences. In this talk, we’re going to discuss about submitting research to journals at the Nature Portfolio, how editorial criteria are established, and many aspects of the editorial process in handling manuscripts, assessing research, and guiding manuscripts through peer-review.

Fecha: 21 de octubre de 2022 – (viernes) – Horário: 10:15 a.m.

Local: Auditório do Departamento de Química

EL PROGRAMA DE POSGRADO EN FÍSICA invita a todos para lo seminario:

Gemini NIFS survey of feeding and feedback processes in nearby active galaxies: stellar populations

Prof. Rogério Riffel

Departamento de Astronomia, UFRGS

Resumen:

Active Galactic Nuclei (AGN) characterize a critical phase in galaxy evolution in which its nuclear supermassive black hole (SMBH) is being fed due to gas accretion onto the nuclear region. The AGN feeding and feedback processes are believed to couple the growth of the SMBHs and their host galaxies and are claimed to be responsible for the correlation between the mass of the SMBH and that of the galaxy bulge. The co-evolution scenario and the gas feeding in the inner kiloparsec of galaxies when they are in the active phase imply that the galaxy bulge grows in consonance with the SMBH. Over the last few years, our team has undertaken a major observational effort to understand this co-evolution by recovering the spatially resolved star formation history and studying the stellar kinematics of the inner few tens parsecs of galaxies. To this purpose we are applying an updated version of the STARLIGHT code to Gemini Near-infrared Integral Field Spectrograph (NIFS) data-cubes of nearby Seyfert galaxies. I will discuss these results in this talk.simulations . Unambiguous evidence that ad hoc molecular design enables the electron charge carriers to be freed from both internal and external disorder to ultimately reach band-like transport is provided.

Fecha: 30 de septiembre de 2022 – (viernes) – Horário: 10:15 a.m.

Enlace acceso al canal de youtube: https://youtu.be/6PGLdkn8_2Q

El programa de Posgrado en Fisica invita a todos para la:

Sustentación de Tesis

Antônio Crispim Lourenço

CORRELAÇÕES GENUÍNAS MULTIPARTIDAS EM SISTEMAS INVARIANTES POR PERMUTAÇÕES DE PARTÍCULAS

Jurados:

Prof. Dr. Eduardo Inacio Duzzioni (presidente) – UFSC/FSC

Prof. Dr. Marcos Cesar de Oliveira (miembro externo) – UNICAMP

Prof. Dr. Fernando Roberto de Luna Parisio Filho (miembro externo) – UFPE

Prof. Dr. Marcelo Henrique Romano Tragtenberg (membro titular) – UFSC/FSC

Prof. Dr. Celso Jorge Villas-Bôas (miembro suplente) – UFSCar

Prof. Dr. Lucas Nicolao (miembro suplente) – UFSC/FSC

Fecha: 19 de septiembre de 2022 – lunes – Horario: 2:00 pm – Lugar: sala virtual Conferência Web de la Rede Nacional de Ensino e Pesquisa (RNP)

Enlace de acceso a sala virtual: https://conferenciaweb.rnp.br/webconf/antonio-crispim

EL PROGRAMA DE POSGRADO EN FÍSICA invita a todos para lo seminario:

Charge transport in organic semiconductor: From principles to devices.

Prof. Emanuele Orgiu

Université du Québec – Canada

Resumen:

Charge transport in organic semiconductors is notoriously extremely sensitive to the presence of disorder, both internal and external (i.e., related to interactions with the dielectric layer), especially for n-type materials. Internal dynamic disorder stems from large thermal fluctuations both in intermolecular transfer integrals and (molecular) site energies in weakly interacting van der Waals solids and sources transient localization of the charge carriers. The molecular vibrations that drive transient localization typically operate at low-frequency (<a-few-hundred cm−1), which makes it difficult to assess them experimentally. Hitherto, this has prevented the identification of clear molecular design rules to control and reduce dynamic disorder. In addition, the disorder can also be external, being controlled by the gate insulator dielectric properties. During the seminar, I will give a few examples of charge transport in very closely related molecular organic semiconductors using a combination of temperature-dependent inelastic neutron scattering and photoelectron spectroscopy corroborated by electrical measurements, theory, and simulations . Unambiguous evidence that ad hoc molecular design enables the electron charge carriers to be freed from both internal and external disorder to ultimately reach band-like transport is provided.

Fecha: 23 de septiembre de 2022 – (viernes) – Horário: 10:15 a.m.

Local: Auditório do Departamento de Química

El programa de Posgrado en Fisica invita a todos para:

Examen de Calificación al Doctorado

José Romão Franca

FOTOCORRENTE EM FILMES FINOS DE SELENETO DE BISMUTO ELETRODEPOSITADOS

Jurados:

Prof. Dr. André Avelino Pasa (presidente) – UFSC/FSC

Prof. Dr. Cauê Ribeiro de Oliveira (miembro titular) – UFRGS/IF

Prof. Dr. Milton Andre Tumelero (miembro titular) – UFRGS/IF

Prof. Dr. Valderes Drago (miembro titular) – UFSC/FSC

Profª. Drª. Deise Schafer (miembro suplente) – UFSC/FSC

Fecha: 23 de septiembre de 2022 – viernes – Horario: 2:00 pm – Lugar: sala virtual de la Conferência Web de la Rede Nacional de Ensino e Pesquisa (RNP)

Enlace de acceso a sala virtual: https://conferenciaweb.rnp.br/webconf/jose-romao

EL PROGRAMA DE POSGRADO EN FÍSICA invita a todos para lo seminario:

Os jornais do Physical Review e dicas para autores

Dr. Katiuscia N. Cassemiro

Managing editor – PRX Quantum

Resumen:

O que fazer para ter seu artigo aceito para publicação? Apresentarei os jornais da American Physical Society, Physical Review, com ênfase em um dos novos jornais da família, PRX Quantum, que é de acesso público e voltado para a comunidade em ciências quânticas. Quando falamos em publicar um artigo, sabemos que é necessário não apenas excelência na execução da pesquisa—por parte dos autores—mas também de engajamento da comunidade de modo mais amplo, o que é facilitado pelos editores. Discutirei minha perspectiva quanto ao processo de revisão, clarificando a razão de certos procedimentos, e oferecendo algumas dicas para aprimorar seu próximo artigo e melhorar sua interação com pareceristas e editores.

Fecha: 26 de agosto de 2022 – (viernes) – Horário: 10:15 a.m.

Enlace acceso al canal de youtube: https://youtu.be/8eldp0SHz0M

El programa de Posgrado en Fisica invita a todos para:

Examen de Calificación al Doctorado

Roberto Kammers

MAPEANDO O DISCO DA VIA LÁCTEA COM ESTRELAS GIGANTES VERMELHAS

Jurados:

Prof. Dr. Roberto Kalbusch Saito (presidente) – UFSC/FSC

Prof. Dr. Antônio Nemer Kanaan Neto (miembro titular) – UFSC/FSC

Prof. Dr. Daniel Ruschel Dutra (miembro titular) – UFSC/FSC

Prof. Dr. Dante Minniti (miembro titular) – UNAB/Chile

Prof. Dr. André Luiz de Amorim (miembro suplente) – UFSC/FSC

Fecha: 14 de septiembre de 2022 – miércoles – Horario: 10:00 am – Lugar: sala virtual de la plataforma MEET

Enlace de acceso a sala virtual: https://meet.google.com/kfx-uxbk-hbf