Graduate Program in Physics at UFSC, Florianópolis
  • Publicado em 28/06/2021 às 06:02 PM




  • Qualifying Examination for Doctoral Thesis of Carline Biesdorf – December 1st, 2021 – Wednesday – 10:00 am

    Publicado em 25/11/2021 às 03:58 PM

    The Physics Graduate Program invites everyone to:

    Qualifying Examination for Doctoral Thesis

    Carline Biesdorf

     

    MODIFIED MIT BAG MODELS AND QCD PHASE DIAGRAMS

                                                                                                                                                      

    Defense Committee

     

    Profª. Drª. Débora Peres Menezes – (president) – UFSC/FSC

    Prof. Dr. Marcelo Dallagnol Alloy – (local member) – UFSC/Blumenau

    Prof. Dr. Luiz Laércio Lopes – (external member) – CEFET/MG

    Prof. Dr. Celso de Camargo Barros Junior – (local member) – UFSC/FSC

    Prof. Dr. Tiago José Nunes da Silva – (local member) – UFSC/FSC

     

    Date: December 1st, 2021Wednesday – Time: 10:00 am – Place: por intermédio da plataforma Google Meet

     

    Link to access virtual room: https://meet.google.com/reu-rgkr-kct


  • Seminar with Arthur Alencastro Puls- November 26, 2021 (friday) – 10:15 a.m.

    Publicado em 22/11/2021 às 07:25 PM

    THE PHYSICS GRADUATE PROGRAM invites everyone to the seminar:

    Detailed chrono-chemo-dynamics of seven metal-poor red giants from Kepler

    Arthur Alencastro Puls

    Research School of Astronomy and Astrophysics, Australian National University

    Abstract:

    The Kepler mission has yielded a revolution in the field of GalacticArchaeology, with its photometry allowing the determination of stellar parameters with an unprecedented level of precision for Red Giant stars. Recent studies have shown that a few of these objects display conflicting characteristics in the age-metallicity space (e.g., young and metal-poor). In this project we combine asteroseismic information from solar-like oscillations, high-resolution spectroscopy and Gaia astrometry to derive stellar ages, chemical abundances and kinematics for a group of metal-poor Red Giants, and characterise them in a multidimensional chrono-chemo-dynamical space. Our results suggest that underestimated parallax errors make the effect of Gaia parallaxes more important than different choices of model grid or – in the case of stars ascending the RGB – mass-loss prescription. Two stars are identified as potentially evolved halo blue stragglers. Four objects are likely members of the accreted Milky Way halo, and their possible relationship with known accretion events, such as Gaia-Sausage and Gaia-Sequoia, is discussed.

    Date: November 26, 2021 – (friday) – Time: 10:15 a.m.

    link to access the youtube channel: https://youtu.be/D1pIcDUoHds


  • Seminar with Prof. Dr. Raphael Ribeiro- November 19, 2021 (friday) – 10:15 a.m.

    Publicado em 16/11/2021 às 12:55 PM

    THE PHYSICS GRADUATE PROGRAM invites everyone to the seminar:

    Chemistry in optical microcavities: Spectral fluctuations and energy transport

    Prof. Dr. Raphael Ribeiro

    Department of Chemistry, Emory University – Atlanta, USA

    Abstract:

    Optical cavities and metallic nanoparticles confine electromagnetic fields and enable new pathways to control physicochemical processes via strong light-matter interactions. In fact, recent experiments have shown that photonic and plasmonic materials may induce significant and sometimes unexpected changes to physical properties and reactivity of molecular systems. In this talk, I will introduce and present the key results of our recent theoretical investigations on the effects of collective radiation-matter interactions on transport and spectral properties of disordered molecular ensembles hosted by a resonant 1D optical cavity (photonic wire). The main implications of our findings to future theoretical and experimental research will be discussed. I will show that widely employed minimal theoretical models fail to adequately describe photonic effects on the local properties of chemical systems and explain strategies to maximize the influence of optical cavities on molecular materials informed by our simulations.

    Date: November 19, 2021 – (friday) – Time: 10:15 a.m.

    link to access the youtube channel: https://youtu.be/8nV3QDFmhB8


  • Seminar with Prof. Dr. Emanuele Orgiu- November 12, 2021 (friday) – 10:15 a.m.

    Publicado em 08/11/2021 às 03:42 PM

    THE PHYSCIS GRADUATE PROGRAM invites everyone to the seminar:

    What Hampers Electron Transport in Organic Crystals? A Close Look at Band-like Transport in N-type Organic Semiconductors

    Prof. Dr. Emanuele Orgiu

    Institut National de la Recherche Scientifique – INRS, Québec – Canada

    Abstract:

    Charge transport in organic semiconductors is notoriously sensitive to the presence of disorder, both intrinsic and extrinsic, especially for n-type materials. Intrinsic 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 extrinsic, being controlled by the chemical and physical “coupling” of the π-conjugated core to the gate dielectric. During the Colloquium, I will present a comprehensive study of charge transport in two closely related n-type molecular organic semiconductors using a combination of temperature-dependent inelastic neutron scattering and photoelectron spectroscopy corroborated by electrical measurements, theory and simulations. By doing so, unambiguous evidence is provided that ad hoc molecular design enables to free the electron charge carriers from both intrinsic and extrinsic disorder to ultimately reach band-like electron transport.

    Date: November 12, 2021 – (friday) – Time: 10:15 a.m.

    link to access the youtube channel: https://youtu.be/TE3LD1NKi4c


  • Seminar with Prof. Dr. Lucas Chibebe Céleri- November 5, 2021 (friday) – 10:15 a.m.

    Publicado em 01/11/2021 às 09:05 AM

    THE PHYSCIS GRADUATE PROGRAM invites everyone to the seminar:

    Gauge invariant quantum thermodynamics: consequences for the first law

    Prof. Dr. Lucas Chibebe Céleri

    Instituto de Física – UFG

    Abstract:

    Universality of classical thermodynamics rests on the central limit theorem, due to which measurements of thermal fluctuations are unable to reveal detailed information regarding the microscopic structure of a macroscopic body. When small systems are considered and fluctuations become important, thermodynamic quantities can be understood in the context of classical stochastic mechanics. A fundamental assumption behind thermodynamics is therefore that of coarse-graining, which stems from a substantial lack of control over all degrees of freedom. However, when quantum systems are concerned, one claims a high level of control. As a consequence, information theory plays a major role in the identification of thermodynamic functions. Here, drawing from the concept of gauge symmetry, essential in all modern physical theories, a new, intermediate, route is put forward. Working within the realm of quantum thermodynamics, a physically motivated gauge transformation, which encodes a gentle variant of coarse-graining behind thermodynamics, is explicitly constructed . As a consequence, quantum work and heat are reinterpreted, as well as the role of quantum coherence.

    Date: November 5, 2021 – (friday) – Time: 10:15 a.m.

    link to access the youtube channel: https://youtu.be/ieeh_LtXBgI


  • Divulgação do Processo Seletivo para ingresso no Programa de Pós-Graduação em Física da Universidade Federal de Santa Catarina (PPGFSC/UFSC)

    Publicado em 01/11/2021 às 08:00 AM

    O Programa de Pós-Graduação em Física da UFSC torna público os editais do processo seletivo para os cursos de mestrado e doutorado para ingresso no semestre 2022/1.

    As inscrições ocorrerão no período de 1 a 30 de novembro de 2021. O PPGFSC utiliza a nota do Exame Unificado de Pós-Graduações em Física – EUF para ingresso nos cursos de mestrado de doutorado.

    Click aqui e acesse o site do processo seletivo do PPGFSC/UFSC.


  • Results of the Simplified Admission Process to the PPGFSC/UFSC entrance at the semester 2021/2

    Publicado em 29/10/2021 às 06:00 PM

    Below is the link to access the result of the PPGFSC / UFSC Simplified Selection Process for admission to master and doctoral courses in the semester 2021/2:

    Results

    The candidates who receive a scholarship will be informed after the Scholarship Committee meeting.


  • Seminar with Dr. Rafael Bento Serpa- October 29, 2021 (friday) – 10:15 a.m.

    Publicado em 25/10/2021 às 03:52 PM

    THE PHYSICS GRADUATE PROGRAM invites everyone to the seminar

    Virtual-Slit Focusing in a Cycloidal Mass Spectrometer – A Proof of Concept

    Dr. Rafael Bento Serpa

    Postdoctoral Associate | Duke University Nanomaterials and Thin Films Lab

    Abstract:

    This work demonstrates a novel approach to mass spectrometry using the “virtual-slit” created by the small, spatial volume from which ions are generated by localized ionization techniques (e.g., laser ionization of particles and surfaces, and spark ionization). That is, the volume in which the ions are generated creates a localized source of ions in much the same way as a slit that allows only ions from a specific cross-sectional area to pass. As demonstrated in this work, the unique perfect focusing properties of a cycloidal mass analyzer can enable the localized ionization volume to function as a virtual slit. In this manuscript, we provide a proof-of-concept (POC) demonstration of a virtual-slit cycloidal mass spectrometer (VS-CyMaS) consisting of a cycloidal mass analyzer, a laser ionization source, and an ion array detector. The laser is used to ionize either bulk or thin-film samples of Cu, Ti, Ni, and Cr. Results indicate that the width of the peaks at the detector is the same as the laser spot size, validating the concept of virtual-slit focusing. Furthermore, the material ablated with each laser pulse for Ti and Cu is estimated at 60 and 140 fg, respectively, indicating that a very low detection limit is possible given the ability of the cycloidal mass analyzer to collect ions generated by laser ionization that have wide energy and angular dispersions.

    Date: October 29, 2021 – (friday) – Time: 10:15 a.m.

    link to access the youtube channel: https://youtu.be/t75RNYAdy1s


  • Approval of applications for the Simplified Admission Process 2021/2

    Publicado em 21/10/2021 às 07:27 PM

    The Graduate Program in Physics of the Federal University of Santa Catarina – UFSC – announces the list of the approved applications for the Simplified Admission Process entrance at the semester 2021/2.

    Click here to see the list of registered candidates and their respective situation in the admission process.

    Period for appealing the application decision: from October 21, 2021, at 0 AM, to October 26, 2021, at 11:59 pm.


  • (Português) Defesa de tese de Everton Botan – 29 de outubro de 2021 – sexta-feira – Horário: 9h30min

    Publicado em 20/10/2021 às 12:28 PM

    Defense of Doctoral Thesis

    Everton Botan
    IDENTIFICATION OF VARIABLE STARS IN THE VVV SURVEY AND INVESTIGATION OF STRUCTURES IN THE GALACTIC BULG

     

    Defense Committee:

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

    Prof. Dr. Jacques Raymond Daniel Lepine – (external member) – IAG/USP

    Prof. Dr. Helio Jaques Rocha-Pinto – (external member) –  Observatório do Valongo – UFRJ

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

    Prof. Dr. Antônio Nemer Kanaan Neto – (201701791) – UFSC/FSC

    Date: October 29, 2021friday – Times: 9:30 am – Place: videoconference

    Virtual room access link: https://meet.google.com/dof-hsws-ezf


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